[pyshp] 01/07: Imported Upstream version 1.2.2+ds
Sebastiaan Couwenberg
sebastic at moszumanska.debian.org
Fri Jun 26 21:24:22 UTC 2015
This is an automated email from the git hooks/post-receive script.
sebastic pushed a commit to branch master
in repository pyshp.
commit 032cf69c17e0e3bb8c5e369b6b0495512b78287a
Author: Bas Couwenberg <sebastic at xs4all.nl>
Date: Fri Jun 26 23:15:23 2015 +0200
Imported Upstream version 1.2.2+ds
---
MANIFEST.in | 1 -
PKG-INFO | 41 +-
README.html | 835 ------------
README.pdf | 4130 ---------------------------------------------------------
README.txt | 10 +-
changelog.txt | 69 -
setup.cfg | 10 +-
setup.py | 5 +-
shapefile.py | 40 +-
9 files changed, 68 insertions(+), 5073 deletions(-)
diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index c003498..0000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1 +0,0 @@
-prune shapefiles
\ No newline at end of file
diff --git a/PKG-INFO b/PKG-INFO
index a2dd472..60e889b 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,19 +1,20 @@
-Metadata-Version: 1.0
-Name: pyshp
-Version: 1.2.1
-Summary: Pure Python read/write support for ESRI Shapefile format
-Home-page: http://code.google.com/p/pyshp
-Author: Joel Lawhead
-Author-email: jlawhead at geospatialpython.com
-License: MIT
+Metadata-Version: 1.1
+Name: pyshp
+Version: 1.2.2
+Summary: Pure Python read/write support for ESRI Shapefile format
+Home-page: https://github.com/GeospatialPython/pyshp
+Author: Joel Lawhead
+Author-email: jlawhead at geospatialpython.com
+License: MIT
+Download-URL: https://github.com/GeospatialPython/pyshp/archive/1.2.2.tar.gz
Description: PyShp
========================
:Author: Joel Lawhead - jlawhead at geospatialpython.com
- :Version 1.2.1
+ :Version 1.2.2
- :Revised: May 11, 2014
+ :Revised: January 9, 2015
.. contents::
@@ -301,6 +302,12 @@ Description: PyShp
>>> len(points)
2
+ There is also an iterShapeRecords() method to iterate through large files:
+
+ >>> shapeRecs = sf.iterShapeRecords()
+ >>> for shape, rec in shapeRecs:
+ ... # do something here
+
Writing Shapefiles
++++++++++++++++++
@@ -661,10 +668,10 @@ Description: PyShp
>>> s.__geo_interface__["type"]
'MultiPolygon'
-
-Keywords: gis geospatial geographic shapefile shapefiles
-Platform: UNKNOWN
-Classifier: Programming Language :: Python
-Classifier: Topic :: Scientific/Engineering :: GIS
-Classifier: Topic :: Software Development :: Libraries
-Classifier: Topic :: Software Development :: Libraries :: Python Modules
+
+Keywords: gis geospatial geographic shapefile shapefiles
+Platform: UNKNOWN
+Classifier: Programming Language :: Python
+Classifier: Topic :: Scientific/Engineering :: GIS
+Classifier: Topic :: Software Development :: Libraries
+Classifier: Topic :: Software Development :: Libraries :: Python Modules
diff --git a/README.html b/README.html
deleted file mode 100644
index dc8c0e5..0000000
--- a/README.html
+++ /dev/null
@@ -1,835 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
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-<head>
-<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-<meta name="generator" content="Docutils 0.9: http://docutils.sourceforge.net/" />
-<title>PyShp</title>
-<meta name="author" content="Joel Lawhead - jlawhead@geospatialpython.com" />
-<style type="text/css">
-
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-:Authors: Ian Bicking, Michael Foord
-:Contact: fuzzyman at voidspace.org.uk
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-h1 tt, h2 tt, h3 tt, h4 tt, h5 tt, h6 tt {
- font-size: 100%;
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-code, tt {
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-</style>
-</head>
-<body>
-<div class="document" id="pyshp">
-<h1 class="title">PyShp</h1>
-<table class="docinfo" frame="void" rules="none">
-<col class="docinfo-name" />
-<col class="docinfo-content" />
-<tbody valign="top">
-<tr><th class="docinfo-name">Author:</th>
-<td>Joel Lawhead - <a class="last reference external" href="mailto:jlawhead@geospatialpython.com">jlawhead@geospatialpython.com</a></td></tr>
-</tbody>
-</table>
-<p>:Version 1.2.1</p>
-<table class="docutils field-list" frame="void" rules="none">
-<col class="field-name" />
-<col class="field-body" />
-<tbody valign="top">
-<tr class="field"><th class="field-name">Revised:</th><td class="field-body">May 11, 2014</td>
-</tr>
-</tbody>
-</table>
-<div class="contents topic" id="contents">
-<p class="topic-title first">Contents</p>
-<ul class="simple">
-<li><a class="reference internal" href="#overview" id="id1">Overview</a></li>
-<li><a class="reference internal" href="#examples" id="id2">Examples</a><ul>
-<li><a class="reference internal" href="#reading-shapefiles" id="id3">Reading Shapefiles</a><ul>
-<li><a class="reference internal" href="#reading-shapefiles-from-file-like-objects" id="id4">Reading Shapefiles from File-Like Objects</a></li>
-<li><a class="reference internal" href="#reading-geometry" id="id5">Reading Geometry</a></li>
-<li><a class="reference internal" href="#reading-records" id="id6">Reading Records</a></li>
-<li><a class="reference internal" href="#reading-geometry-and-records-simultaneously" id="id7">Reading Geometry and Records Simultaneously</a></li>
-</ul>
-</li>
-<li><a class="reference internal" href="#writing-shapefiles" id="id8">Writing Shapefiles</a><ul>
-<li><a class="reference internal" href="#setting-the-shape-type" id="id9">Setting the Shape Type</a></li>
-<li><a class="reference internal" href="#geometry-and-record-balancing" id="id10">Geometry and Record Balancing</a></li>
-<li><a class="reference internal" href="#adding-geometry" id="id11">Adding Geometry</a></li>
-<li><a class="reference internal" href="#creating-attributes" id="id12">Creating Attributes</a></li>
-<li><a class="reference internal" href="#file-names" id="id13">File Names</a></li>
-<li><a class="reference internal" href="#saving-to-file-like-objects" id="id14">Saving to File-Like Objects</a></li>
-</ul>
-</li>
-<li><a class="reference internal" href="#editing-shapefiles" id="id15">Editing Shapefiles</a></li>
-<li><a class="reference internal" href="#python-geo-interface" id="id16">Python __geo_interface__</a></li>
-</ul>
-</li>
-</ul>
-</div>
-<div class="section" id="overview">
-<h1><a class="toc-backref" href="#id1">Overview</a></h1>
-<p>PyShp provides read and write support for the Esri
-Shapefile format. The Shapefile format is a popular Geographic Information
-System vector data format created by Esri. For more information about this format
-please read the well-written "ESRI Shapefile Technical Description - July 1998"
-located at <a class="reference external" href="http://www.esri.com/library/whitepapers/pdfs/shapefile.pdf">http://www.esri.com/library/whitepapers/pdfs/shapefile.pdf</a>.
-The Esri document describes the shp and shx file formats. However a third file
-format called dbf is also required. This format is documented on the web as the
-"XBase File Format Description" and is a simple file-based database format created
-in the 1960's. For more on this specification see:
-<a class="reference external" href="http://www.clicketyclick.dk/databases/xbase/format/index.html">http://www.clicketyclick.dk/databases/xbase/format/index.html</a></p>
-<p>Both the Esri and XBase file-formats are very simple in design and
-memory efficient which is part of the reason the shapefile format remains popular
-despite the numerous ways to store and exchange GIS data available today.</p>
-<p>Pyshp is compatible with Python 2.4-3.x.</p>
-<p>This document provides examples for using PyShp to read and write shapefiles.</p>
-<p>Currently the sample census blockgroup shapefile referenced in the examples is
-only available on the google code project site at <a class="reference external" href="http://code.google.com/p/pyshp">http://code.google.com/p/pyshp</a>.
-These examples are straight-forward and you can also easily run them against your
-own shapefiles manually with minimal modification. Other examples for specific
-topics are continually added to the pyshp wiki on google code and the blog
-<a class="reference external" href="http://GeospatialPython.com">http://GeospatialPython.com</a>.</p>
-<p>Important: For information about map projections, shapefiles,
-and Python please visit: <a class="reference external" href="http://code.google.com/p/pyshp/wiki/MapProjections">http://code.google.com/p/pyshp/wiki/MapProjections</a></p>
-<p>I sincerely hope this library eliminates the mundane distraction of simply
-reading and writing data, and allows you to focus on the challenging and FUN
-part of your geospatial project.</p>
-</div>
-<div class="section" id="examples">
-<h1><a class="toc-backref" href="#id2">Examples</a></h1>
-<p>Before doing anything you must import the library.</p>
-<pre class="doctest-block">
->>> import shapefile
-</pre>
-<p>The examples below will use a shapefile created from the U.S. Census Bureau
-Blockgroups data set near San Francisco, CA and available in the subversion
-repository of the pyshp google code site.</p>
-<div class="section" id="reading-shapefiles">
-<h2><a class="toc-backref" href="#id3">Reading Shapefiles</a></h2>
-<p>To read a shapefile create a new "Reader" object and pass it the name of an
-existing shapefile. The shapefile format is acutally a collection of three
-files. You specify the base filename of the shapefile or the complete filename
-of any of the shapefile component files.</p>
-<pre class="doctest-block">
->>> sf = shapefile.Reader("shapefiles/blockgroups")
-</pre>
-<p>OR</p>
-<pre class="doctest-block">
->>> sf = shapefile.Reader("shapefiles/blockgroups.shp")
-</pre>
-<p>OR</p>
-<pre class="doctest-block">
->>> sf = shapefile.Reader("shapefiles/blockgroups.dbf")
-</pre>
-<p>OR any of the other 5+ formats which are potentially part of a shapefile.
-The library does not care about extensions.</p>
-<div class="section" id="reading-shapefiles-from-file-like-objects">
-<h3><a class="toc-backref" href="#id4">Reading Shapefiles from File-Like Objects</a></h3>
-<p>You can also load shapefiles from any Python file-like object using keyword
-arguments to specify any of the three files. This feature is very powerful
-and allows you to load shapefiles from a url, from a zip file, serialized
-object, or in some cases a database.</p>
-<pre class="doctest-block">
->>> myshp = open("shapefiles/blockgroups.shp", "rb")
->>> mydbf = open("shapefiles/blockgroups.dbf", "rb")
->>> r = shapefile.Reader(shp=myshp, dbf=mydbf)
-</pre>
-<p>Notice in the examples above the shx file is never used. The shx file is a
-very simple fixed-record index for the variable length records in the shp file.
-This file is optional for reading. If it's available pyshp will use the shx file
-to access shape records a little faster but will do just fine without it.</p>
-</div>
-<div class="section" id="reading-geometry">
-<h3><a class="toc-backref" href="#id5">Reading Geometry</a></h3>
-<p>A shapefile's geometry is the collection of points or shapes made from verticies
-and implied arcs representing physical locations. All types of shapefiles
-just store points. The metadata about the points determine how they are handled by
-software.</p>
-<p>You can get the a list of the shapefile's geometry by calling the shapes()
-method.</p>
-<pre class="doctest-block">
->>> shapes = sf.shapes()
-</pre>
-<p>The shapes method returns a list of Shape objects describing the
-geometry of each shape record.</p>
-<pre class="doctest-block">
->>> len(shapes)
-663
-</pre>
-<p>You can iterate through the shapefile's geometry using the iterShapes() method.</p>
-<pre class="doctest-block">
->>> len(list(sf.iterShapes()))
-663
-</pre>
-<p>Each shape record contains the following attributes:</p>
-<pre class="doctest-block">
->>> for name in dir(shapes[3]):
-... if not name.startswith('__'):
-... name
-'bbox'
-'parts'
-'points'
-'shapeType'
-</pre>
-<blockquote>
-<ul class="simple">
-<li>shapeType: an integer representing the type of shape as defined by the
-shapefile specification.</li>
-</ul>
-</blockquote>
-<pre class="doctest-block">
->>> shapes[3].shapeType
-5
-</pre>
-<blockquote>
-<ul class="simple">
-<li>bbox: If the shape type contains multiple points this tuple describes the
-lower left (x,y) coordinate and upper right corner coordinate creating a
-complete box around the points. If the shapeType is a Null
-(shapeType == 0) then an AttributeError is raised.</li>
-</ul>
-</blockquote>
-<pre class="doctest-block">
->>> # Get the bounding box of the 4th shape.
->>> # Round coordinates to 3 decimal places
->>> bbox = shapes[3].bbox
->>> ['%.3f' % coord for coord in bbox]
-['-122.486', '37.787', '-122.446', '37.811']
-</pre>
-<blockquote>
-<ul class="simple">
-<li>parts: Parts simply group collections of points into shapes. If the shape record
-has multiple parts this attribute contains the index of the first point of each part.
-If there is only one part then a list containing 0 is returned.</li>
-</ul>
-</blockquote>
-<pre class="doctest-block">
->>> shapes[3].parts
-[0]
-</pre>
-<blockquote>
-<ul class="simple">
-<li>points: The points attribute contains a list of tuples containing an (x,y)
-coordinate for each point in the shape.</li>
-</ul>
-</blockquote>
-<pre class="doctest-block">
->>> len(shapes[3].points)
-173
->>> # Get the 8th point of the fourth shape
->>> # Truncate coordinates to 3 decimal places
->>> shape = shapes[3].points[7]
->>> ['%.3f' % coord for coord in shape]
-['-122.471', '37.787']
-</pre>
-<p>To read a single shape by calling its index use the shape() method. The index
-is the shape's count from 0. So to read the 8th shape record you would
-use its index which is 7.</p>
-<pre class="doctest-block">
->>> s = sf.shape(7)
-</pre>
-<pre class="doctest-block">
->>> # Read the bbox of the 8th shape to verify
->>> # Round coordinates to 3 decimal places
->>> ['%.3f' % coord for coord in s.bbox]
-['-122.450', '37.801', '-122.442', '37.808']
-</pre>
-</div>
-<div class="section" id="reading-records">
-<h3><a class="toc-backref" href="#id6">Reading Records</a></h3>
-<p>A record in a shapefile contains the attributes for each shape in the
-collection of geometry. Records are stored in the dbf file. The link
-between geometry and attributes is the foundation of Geographic Information
-Systems. This critical link is implied by the order of shapes and
-corresponding records in the shp geometry file and the dbf attribute file.</p>
-<p>The field names of a shapefile are available as soon as you read a shapefile.
-You can call the "fields" attribute of the shapefile as a Python list. Each
-field is a Python list with the following information:</p>
-<ul class="simple">
-<li>Field name: the name describing the data at this column index.</li>
-<li>Field type: the type of data at this column index. Types can be: Character, Numbers, Longs, Dates, or Memo.
-The "Memo" type has no meaning within a GIS and is part of the xbase spec instead.</li>
-<li>Field length: the length of the data found at this column index. Older GIS software may truncate this
-length to 8 or 11 characters for "Character" fields.</li>
-<li>Decimal length: the number of decimal places found in "Number" fields.</li>
-</ul>
-<p>To see the fields for the Reader object above (sf) call the "fields" attribute:</p>
-<pre class="doctest-block">
->>> fields = sf.fields
-</pre>
-<pre class="doctest-block">
->>> assert fields == [("DeletionFlag", "C", 1, 0), ["AREA", "N", 18, 5],
-... ["BKG_KEY", "C", 12, 0], ["POP1990", "N", 9, 0], ["POP90_SQMI", "N", 10, 1],
-... ["HOUSEHOLDS", "N", 9, 0],
-... ["MALES", "N", 9, 0], ["FEMALES", "N", 9, 0], ["WHITE", "N", 9, 0],
-... ["BLACK", "N", 8, 0], ["AMERI_ES", "N", 7, 0], ["ASIAN_PI", "N", 8, 0],
-... ["OTHER", "N", 8, 0], ["HISPANIC", "N", 8, 0], ["AGE_UNDER5", "N", 8, 0],
-... ["AGE_5_17", "N", 8, 0], ["AGE_18_29", "N", 8, 0], ["AGE_30_49", "N", 8, 0],
-... ["AGE_50_64", "N", 8, 0], ["AGE_65_UP", "N", 8, 0],
-... ["NEVERMARRY", "N", 8, 0], ["MARRIED", "N", 9, 0], ["SEPARATED", "N", 7, 0],
-... ["WIDOWED", "N", 8, 0], ["DIVORCED", "N", 8, 0], ["HSEHLD_1_M", "N", 8, 0],
-... ["HSEHLD_1_F", "N", 8, 0], ["MARHH_CHD", "N", 8, 0],
-... ["MARHH_NO_C", "N", 8, 0], ["MHH_CHILD", "N", 7, 0],
-... ["FHH_CHILD", "N", 7, 0], ["HSE_UNITS", "N", 9, 0], ["VACANT", "N", 7, 0],
-... ["OWNER_OCC", "N", 8, 0], ["RENTER_OCC", "N", 8, 0],
-... ["MEDIAN_VAL", "N", 7, 0], ["MEDIANRENT", "N", 4, 0],
-... ["UNITS_1DET", "N", 8, 0], ["UNITS_1ATT", "N", 7, 0], ["UNITS2", "N", 7, 0],
-... ["UNITS3_9", "N", 8, 0], ["UNITS10_49", "N", 8, 0],
-... ["UNITS50_UP", "N", 8, 0], ["MOBILEHOME", "N", 7, 0]]
-</pre>
-<p>You can get a list of the shapefile's records by calling the records() method:</p>
-<pre class="doctest-block">
->>> records = sf.records()
-</pre>
-<pre class="doctest-block">
->>> len(records)
-663
-</pre>
-<p>Similar to the geometry methods, you can iterate through dbf records using the
-recordsIter() method.</p>
-<pre class="doctest-block">
->>> len(list(sf.iterRecords()))
-663
-</pre>
-<p>Each record is a list containing an attribute corresponding to each field in the
-field list.</p>
-<p>For example in the 4th record of the blockgroups shapefile the 2nd and 3rd
-fields are the blockgroup id and the 1990 population count of
-that San Francisco blockgroup:</p>
-<pre class="doctest-block">
->>> records[3][1:3]
-['060750601001', 4715]
-</pre>
-<p>To read a single record call the record() method with the record's index:</p>
-<pre class="doctest-block">
->>> rec = sf.record(3)
-</pre>
-<pre class="doctest-block">
->>> rec[1:3]
-['060750601001', 4715]
-</pre>
-</div>
-<div class="section" id="reading-geometry-and-records-simultaneously">
-<h3><a class="toc-backref" href="#id7">Reading Geometry and Records Simultaneously</a></h3>
-<p>You way want to examine both the geometry and the attributes for a record at the
-same time. The shapeRecord() and shapeRecords() method let you do just that.</p>
-<p>Calling the shapeRecords() method will return the geometry and attributes for
-all shapes as a list of ShapeRecord objects. Each ShapeRecord instance has a
-"shape" and "record" attribute. The shape attribute is a ShapeRecord object as
-dicussed in the first section "Reading Geometry". The record attribute is a
-list of field values as demonstrated in the "Reading Records" section.</p>
-<pre class="doctest-block">
->>> shapeRecs = sf.shapeRecords()
-</pre>
-<p>Let's read the blockgroup key and the population for the 4th blockgroup:
->>> shapeRecs[3].record[1:3]
-['060750601001', 4715]</p>
-<p>Now let's read the first two points for that same record:</p>
-<pre class="doctest-block">
->>> points = shapeRecs[3].shape.points[0:2]
-</pre>
-<pre class="doctest-block">
->>> len(points)
-2
-</pre>
-<p>The shapeRec() method reads a single shape/record pair at the specified index.
-To get the 4th shape record from the blockgroups shapfile use the third index:</p>
-<pre class="doctest-block">
->>> shapeRec = sf.shapeRecord(3)
-</pre>
-<p>The blockgroup key and population count:</p>
-<pre class="doctest-block">
->>> shapeRec.record[1:3]
-['060750601001', 4715]
-</pre>
-<pre class="doctest-block">
->>> points = shapeRec.shape.points[0:2]
-</pre>
-<pre class="doctest-block">
->>> len(points)
-2
-</pre>
-</div>
-</div>
-<div class="section" id="writing-shapefiles">
-<h2><a class="toc-backref" href="#id8">Writing Shapefiles</a></h2>
-<p>PyShp tries to be as flexible as possible when writing shapefiles while
-maintaining some degree of automatic validation to make sure you don't
-accidentally write an invalid file.</p>
-<p>PyShp can write just one of the component files such as the shp or dbf file
-without writing the others. So in addition to being a complete
-shapefile library, it can also be used as a basic dbf (xbase) library. Dbf files are
-a common database format which are often useful as a standalone simple
-database format. And even shp files occasionaly have uses as a standalone
-format. Some web-based GIS systems use an user-uploaded shp file to specify
-an area of interest. Many precision agriculture chemical field sprayers also
-use the shp format as a control file for the sprayer system (usually in
-combination with custom database file formats).</p>
-<p>To create a shapefile you add geometry and/or attributes using methods in the
-Writer class until you are ready to save the file.</p>
-<p>Create an instance of the Writer class to begin creating a shapefile:</p>
-<pre class="doctest-block">
->>> w = shapefile.Writer()
-</pre>
-<div class="section" id="setting-the-shape-type">
-<h3><a class="toc-backref" href="#id9">Setting the Shape Type</a></h3>
-<p>The shape type defines the type of geometry contained in the shapefile. All of
-the shapes must match the shape type setting.</p>
-<p>Shape types are represented by numbers between 0 and 31 as defined by the
-shapefile specification. It is important to note that numbering system has
-several reserved numbers which have not been used yet therefore the numbers of
-the existing shape types are not sequential.</p>
-<p>You can reference shape types by the numbers or by constants defined by PyShp:
-shapefile.NULL = 0
-shapefile.POINT = 1
-shapefile.POLYLINE = 3
-shapefile.POLYGON = 5
-shapefile.MULTIPOINT = 8
-shapefile.POINTZ = 11
-shapefile.POLYLINEZ = 13
-shapefile.POLYGONZ = 15
-shapefile.MULTIPOINTZ = 18
-shapefile.POINTM = 21
-shapefile.POLYLINEM = 23
-shapefile.POLYGONM = 25
-shapefile.MULTIPOINTM = 28
-shapefile.MULTIPATCH = 31</p>
-<p>There are three ways to set the shape type:
-- Set it when creating the class instance.
-- Set it by assigning a value to an existing class instance.
-- Set it automatically to the type of the first shape by saving the shapefile.</p>
-<p>To manually set the shape type for a Writer object when creating the Writer:</p>
-<pre class="doctest-block">
->>> w = shapefile.Writer(shapeType=1)
-</pre>
-<p>or we can use the constants as explained above:</p>
-<pre class="doctest-block">
->>> w = shapefile.Writer(shapefile.POINT)
-</pre>
-<p>As you can see, specifying the shapeType argument explicitly isn't necessary.</p>
-<pre class="doctest-block">
->>> w.shapeType
-1
-</pre>
-<p>OR you can set it after the Writer is created by changing the property:</p>
-<pre class="doctest-block">
->>> w.shapeType = 3
-</pre>
-<pre class="doctest-block">
->>> w.shapeType
-3
-</pre>
-</div>
-<div class="section" id="geometry-and-record-balancing">
-<h3><a class="toc-backref" href="#id10">Geometry and Record Balancing</a></h3>
-<p>Because every shape must have a corresponding record it is critical that the
-number of records equals the number of shapes to create a valid shapefile. To
-help prevent accidental misalignment PyShp has an "auto balance" feature to
-make sure when you add either a shape or a record the two sides of the
-equation line up. This feature is NOT turned on by default. To activate it
-set the attribute autoBalance to 1 (True):</p>
-<pre class="doctest-block">
->>> w.autoBalance = 1
-</pre>
-<p>You also have the option of manually calling the balance() method each time you
-add a shape or a record to ensure the other side is up to date. When balancing
-is used null shapes are created on the geometry side or a record with a value of
-"NULL" for each field is created on the attribute side.</p>
-<p>The balancing option gives you flexibility in how you build the shapefile.</p>
-<p>Without auto balancing you can add geometry or records at anytime. You can
-create all of the shapes and then create all of the records or vice versa. You
-can use the balance method after creating a shape or record each time and make
-updates later. If you do not use the balance method and forget to manually
-balance the geometry and attributes the shapefile will be viewed as corrupt by
-most shapefile software.</p>
-<p>With auto balanacing you can add either shapes or geometry and update blank
-entries on either side as needed. Even if you forget to update an entry the
-shapefile will still be valid and handled correctly by most shapefile software.</p>
-</div>
-<div class="section" id="adding-geometry">
-<h3><a class="toc-backref" href="#id11">Adding Geometry</a></h3>
-<p>Geometry is added using one of three methods: "null", "point", or "poly". The "null"
-method is used for null shapes, "point" is used for point shapes, and "poly" is
-used for everything else.</p>
-<p><strong>Adding a Null shape</strong></p>
-<p>Because Null shape types (shape type 0) have no geometry the "null" method is
-called without any arguments.</p>
-<pre class="doctest-block">
->>> w = shapefile.Writer()
-</pre>
-<pre class="doctest-block">
->>> w.null()
-</pre>
-<p>The writer object's shapes list will now have one null shape:</p>
-<pre class="doctest-block">
->>> assert w.shapes()[0].shapeType == shapefile.NULL
-</pre>
-<p><strong>Adding a Point shape</strong></p>
-<p>Point shapes are added using the "point" method. A point is specified by an
-x, y, and optional z (elevation) and m (measure) value.</p>
-<pre class="doctest-block">
->>> w = shapefile.Writer(shapefile.POINT)
-</pre>
-<pre class="doctest-block">
->>> w.point(122, 37) # No elevation or measure values
-</pre>
-<pre class="doctest-block">
->>> w.shapes()[0].points
-[[122, 37, 0, 0]]
-</pre>
-<pre class="doctest-block">
->>> w.point(118, 36, 4, 8)
-</pre>
-<pre class="doctest-block">
->>> w.shapes()[1].points
-[[118, 36, 4, 8]]
-</pre>
-<p><strong>Adding a Poly Shape</strong></p>
-<p>"Poly" shapes can be either polygons or lines. Shapefile polygons must have at
-least 4 points and the last point must be the same as the first. PyShp automatically
-enforces closed polygons.
-A line must have at least two points.
-Because of the similarities between these two shape types they are created using
-a single method called "poly".</p>
-<pre class="doctest-block">
->>> w = shapefile.Writer(shapefile.POLYGON)
-</pre>
-<pre class="doctest-block">
->>> w.poly(shapeType=3, parts=[[[122,37,4,9], [117,36,3,4]], [[115,32,8,8],
-... [118,20,6,4], [113,24]]])
-</pre>
-<p><strong>Adding a Polygon with Rings</strong></p>
-<p>Polygons consist of rings which mean they are closed. The first point and last point
-of a ring must be the same. PyShp enforces ring closure if the ring is incomplete when
-you add the shape. Polygons can have inner rings which create holes. Holes are defined
-by the order of the points. Normally points in a ring run clockwise. If the points
-run counter-clockwise then they form a hole. If you don't order the points correctly
-you'll just have overlapping polygons.</p>
-<pre class="doctest-block">
->>> w = shapefile.Writer(shapefile.POLYGON)
->>> outer_ring = [[10,10],[50,50],[100,10],[50,-50],[10,10]]
->>> inner_ring = [[40,10],[50,30],[70,10],[50,-30],[40,10]]
->>> inner_ring.reverse()
-</pre>
-<p>You can use the "shapefile.signed_area()" method to determine if a ring is clockwise
-or counter-clockwise. A value >= 0 means the ring is counter-clockwise and < 0 means
-the ring is clockwise. The value returned is also the area of the polygon.</p>
-<pre class="doctest-block">
->>> # Clockwise ring
-... shapefile.signed_area(outer_ring)
--4500.0
->>> # Counter-clockwise ring
-... shapefile.signed_area(inner_ring)
-900.0
-</pre>
-<p><strong>Creating 3D Polygons</strong></p>
-<p>Elevation values, known as "Z" values allow you to create 3-dimensional shapefiles. The
-z value is an extra value specified as part of a point.</p>
-<pre class="doctest-block">
->>> w = shapefile.Writer(shapeType=shapefile.POLYGONZ)
->>> w.poly([[[-89.0, 33, 12], [-90, 31, 11], [-91, 30, 12]]], shapeType=15)
->>> w.field("NAME")
->>> w.record("PolyZTest")
->>> w.save("shapefiles/test/MyPolyZ")
-</pre>
-<p>The z values are stored in a seperate shape attribute.</p>
-<pre class="doctest-block">
->>> r = shapefile.Reader("shapefiles/test/MyPolyZ")
->>> s = r.shape(0)
->>> s.points
-[[-89.0, 33.0], [-90.0, 31.0], [-91.0, 30.0], [-89.0, 33.0]]
->>> s.z
-[12.0, 11.0, 12.0, 12.0]
-</pre>
-</div>
-<div class="section" id="creating-attributes">
-<h3><a class="toc-backref" href="#id12">Creating Attributes</a></h3>
-<p>Creating attributes involves two steps. Step 1 is to create fields to contain
-attribute values and step 2 is to populate the fields with values for each
-shape record.</p>
-<p>The following attempts to create a complete shapefile:</p>
-<pre class="doctest-block">
->>> w = shapefile.Writer(shapefile.POINT)
->>> w.point(1,1)
->>> w.point(3,1)
->>> w.point(4,3)
->>> w.point(2,2)
->>> w.field('FIRST_FLD')
->>> w.field('SECOND_FLD','C','40')
->>> w.record('First','Point')
->>> w.record('Second','Point')
->>> w.record('Third','Point')
->>> w.record('Fourth','Point')
->>> w.save('shapefiles/test/point')
-</pre>
-<pre class="doctest-block">
->>> w = shapefile.Writer(shapefile.POLYGON)
->>> w.poly(parts=[[[1,5],[5,5],[5,1],[3,3],[1,1]]])
->>> w.field('FIRST_FLD','C','40')
->>> w.field('SECOND_FLD','C','40')
->>> w.record('First','Polygon')
->>> w.save('shapefiles/test/polygon')
-</pre>
-<pre class="doctest-block">
->>> w = shapefile.Writer(shapefile.POLYLINE)
->>> w.line(parts=[[[1,5],[5,5],[5,1],[3,3],[1,1]]])
->>> w.poly(parts=[[[1,3],[5,3]]], shapeType=shapefile.POLYLINE)
->>> w.field('FIRST_FLD','C','40')
->>> w.field('SECOND_FLD','C','40')
->>> w.record('First','Line')
->>> w.record('Second','Line')
->>> w.save('shapefiles/test/line')
-</pre>
-<p>You can also add attributes using keyword arguments where the keys are field names.</p>
-<pre class="doctest-block">
->>> w = shapefile.Writer(shapefile.POLYLINE)
->>> w.line(parts=[[[1,5],[5,5],[5,1],[3,3],[1,1]]])
->>> w.field('FIRST_FLD','C','40')
->>> w.field('SECOND_FLD','C','40')
->>> w.record(FIRST_FLD='First', SECOND_FLD='Line')
->>> w.save('shapefiles/test/line')
-</pre>
-</div>
-<div class="section" id="file-names">
-<h3><a class="toc-backref" href="#id13">File Names</a></h3>
-<p>File extensions are optional when reading or writing shapfiles. If you specify them Pyshp
-ignores them anyway. When you save files you can specify a base file name that is used for
-all three file types. Or you can specify a nmae for one or more file types. In that case,
-any file types not assigned will not save and only file types with file names will be saved.
-If you do not specify any file names (i.e. save()), then a unique file name is generated with
-the prefix "shapefile_" followed by random characters which is used for all three files. The
-unique file name is returned as a string.</p>
-<pre class="doctest-block">
->>> targetName = w.save()
->>> assert("shapefile_" in targetName)
-</pre>
-</div>
-<div class="section" id="saving-to-file-like-objects">
-<h3><a class="toc-backref" href="#id14">Saving to File-Like Objects</a></h3>
-<p>Just as you can read shapefiles from python file-like objects you can also write them.</p>
-<pre class="doctest-block">
->>> try:
-... from StringIO import StringIO
-... except ImportError:
-... from io import BytesIO as StringIO
->>> shp = StringIO()
->>> shx = StringIO()
->>> dbf = StringIO()
->>> w.saveShp(shp)
->>> w.saveShx(shx)
->>> w.saveDbf(dbf)
->>> # Normally you would call the "StringIO.getvalue()" method on these objects.
->>> shp = shx = dbf = None
-</pre>
-</div>
-</div>
-<div class="section" id="editing-shapefiles">
-<h2><a class="toc-backref" href="#id15">Editing Shapefiles</a></h2>
-<p>The Editor class attempts to make changing existing shapefiles easier by handling the reading and writing details behind the scenes.</p>
-<p>Let's add shapes to existing shapefiles:</p>
-<p>Add a point to a point shapefile</p>
-<pre class="doctest-block">
->>> e = shapefile.Editor(shapefile="shapefiles/test/point.shp")
->>> e.point(0,0,10,2)
->>> e.record("Appended","Point")
->>> # We added z and m values so
->>> # change the shapetype
->>> e.shapeType = shapefile.POINTZ
->>> e.save('shapefiles/test/point')
-</pre>
-<p>Edit the appended point to change the "y" and "z" value</p>
-<pre class="doctest-block">
->>> e = shapefile.Editor(shapefile="shapefiles/test/point.shp")
->>> # Find the point by the attribute
->>> for s in enumerate(e.records):
-... i, record = s
-... if record[0] == "Appended":
-... geom = e._shapes[i]
-... # Change the y value to 5
-... geom.points[0][1] = 5
-... # Change the z value to 9
-... if hasattr(geom, "z"):
-... geom.z = (9,)
-... else:
-... geom.points[0][2] = 9
->>> e.save('shapefiles/test/point')
-</pre>
-<p>Add a new line to a line shapefile:</p>
-<pre class="doctest-block">
->>> e = shapefile.Editor(shapefile="shapefiles/test/line.shp")
->>> e.line(parts=[[[10,5],[15,5],[15,1],[13,3],[11,1]]])
->>> e.record('Appended','Line')
->>> e.save('shapefiles/test/line')
->>> e = None
-</pre>
-<p>Add a new polygon to a polygon shapefile:</p>
-<pre class="doctest-block">
->>> e = shapefile.Editor(shapefile="shapefiles/test/polygon.shp")
->>> e.poly(parts=[[[5.1,5],[9.9,5],[9.9,1],[7.5,3],[5.1,1]]])
->>> e.record("Appended","Polygon")
->>> e.save('shapefiles/test/polygon')
->>> e = None
-</pre>
-<p>Remove the first point in each shapefile - for a point shapefile that is
-the first shape and record"</p>
-<pre class="doctest-block">
->>> e = shapefile.Editor(shapefile="shapefiles/test/point.shp")
->>> e.delete(0)
->>> e.save('shapefiles/test/point')
->>> e = None
-</pre>
-<p>Remove the last shape in the polygon shapefile.</p>
-<pre class="doctest-block">
->>> e = shapefile.Editor(shapefile="shapefiles/test/polygon.shp")
->>> e.delete(-1)
->>> e.save('shapefiles/test/polygon')
->>> e = None
-</pre>
-</div>
-<div class="section" id="python-geo-interface">
-<h2><a class="toc-backref" href="#id16">Python __geo_interface__</a></h2>
-<p>The Python __geo_interface__ convention provides a data interchange interface
-among geospatial Python libraries. The interface returns data as GeoJSON.
-More information on the __geo_interface__ protocol can be found at:
-<a class="reference external" href="https://gist.github.com/sgillies/2217756">https://gist.github.com/sgillies/2217756</a>.
-More information on GeoJSON is available at <a class="reference external" href="http://geojson.org">http://geojson.org</a> <a class="reference external" href="http://geojson.org">http://geojson.org</a>.</p>
-<pre class="doctest-block">
->>> s = sf.shape(0)
->>> s.__geo_interface__["type"]
-'MultiPolygon'
-</pre>
-</div>
-</div>
-</div>
-</body>
-</html>
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-BT 1 0 0 1 0 2 Tm 12 TL /F3 10 Tf 0 0 0 rg (>) Tj (>) Tj (>) Tj ( rec = sf.record\(3\)) Tj T* ET
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-Q
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-Q
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-q
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-0 0 0 rg
-BT 1 0 0 1 0 2 Tm /F1 10 Tf 12 TL (Create an instance of the Writer class to begin creating a shapefile:) Tj T* ET
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-0 0 0 rg
-BT 1 0 0 1 0 14 Tm /F1 10 Tf 12 TL .28832 Tw (The shape type defines the type of geometry contained in the shapefile. All of the shapes must match the) Tj T* 0 Tw (shape type setting.) Tj T* ET
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-0 0 0 rg
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-0 0 0 rg
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-Q
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-0 0 0 rg
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-0 0 0 rg
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-BT 1 0 0 1 0 2 Tm 12 TL /F3 10 Tf 0 0 0 rg (>) Tj (>) Tj (>) Tj ( w.autoBalance = 1) Tj T* ET
-Q
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-1 0 0 1 62.69291 352.8236 cm
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-0 0 0 rg
-BT 1 0 0 1 0 26 Tm /F1 10 Tf 12 TL .186303 Tw (You also have the option of manually calling the balance\(\) method each time you add a shape or a record) Tj T* 0 Tw .741567 Tw (to ensure the other side is up to date. When balancing is used null shapes are created on the geometry) Tj T* 0 Tw (side or a record with a value of "NULL" for each field is created on the attribute side.) Tj T* ET
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-0 0 0 rg
-BT 1 0 0 1 0 2 Tm /F1 10 Tf 12 TL (The balancing option gives you flexibility in how you build the shapefile.) Tj T* ET
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-0 0 0 rg
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-0 0 0 rg
-BT 1 0 0 1 0 26 Tm /F1 10 Tf 12 TL .698221 Tw (With auto balanacing you can add either shapes or geometry and update blank entries on either side as) Tj T* 0 Tw .157356 Tw (needed. Even if you forget to update an entry the shapefile will still be valid and handled correctly by most) Tj T* 0 Tw (shapefile software.) Tj T* ET
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-1 0 0 1 62.69291 211.8236 cm
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-BT 1 0 0 1 0 2.5 Tm 15 TL /F4 12.5 Tf 0 0 0 rg (Adding Geometry) Tj T* ET
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-0 0 0 rg
-BT 1 0 0 1 0 14 Tm /F1 10 Tf 12 TL .256098 Tw (Geometry is added using one of three methods: "null", "point", or "poly". The "null" method is used for null) Tj T* 0 Tw (shapes, "point" is used for point shapes, and "poly" is used for everything else.) Tj T* ET
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-BT 1 0 0 1 0 2 Tm /F2 10 Tf 12 TL (Adding a Null shape) Tj T* ET
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-1 0 0 1 62.69291 133.8236 cm
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-0 0 0 rg
-BT 1 0 0 1 0 14 Tm /F1 10 Tf 12 TL 2.14061 Tw (Because Null shape types \(shape type 0\) have no geometry the "null" method is called without any) Tj T* 0 Tw (arguments.) Tj T* ET
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-BT 1 0 0 1 0 2 Tm 12 TL /F3 10 Tf 0 0 0 rg (>) Tj (>) Tj (>) Tj ( w = shapefile.Writer\(\)) Tj T* ET
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-1 0 0 1 62.69291 666.6236 cm
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-0 0 0 rg
-BT 1 0 0 1 0 2 Tm /F2 10 Tf 12 TL (Adding a Point shape) Tj T* ET
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-n -6 -6 468.6898 36 re B*
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-BT 1 0 0 1 0 14 Tm 12 TL /F3 10 Tf 0 0 0 rg (>) Tj (>) Tj (>) Tj ( w.shapes\(\)[1].points) Tj T* ([[118, 36, 4, 8]]) Tj T* ET
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-1 0 0 1 62.69291 426.6236 cm
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-0 0 0 rg
-BT 1 0 0 1 0 2 Tm /F2 10 Tf 12 TL (Adding a Poly Shape) Tj T* ET
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-0 0 0 rg
-BT 1 0 0 1 0 38 Tm /F1 10 Tf 12 TL .20332 Tw ("Poly" shapes can be either polygons or lines. Shapefile polygons must have at least 4 points and the last) Tj T* 0 Tw .863516 Tw (point must be the same as the first. PyShp automatically enforces closed polygons. A line must have at) Tj T* 0 Tw 1.646235 Tw (least two points. Because of the similarities between these two shape types they are created using a) Tj T* 0 Tw (single method called "poly".) Tj T* ET
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-BT 1 0 0 1 0 2 Tm 12 TL /F3 10 Tf 0 0 0 rg (>) Tj (>) Tj (>) Tj ( w = shapefile.Writer\(shapefile.POLYGON\)) Tj T* ET
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-1 0 0 1 62.69291 294.2236 cm
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-1 0 0 1 62.69291 274.2236 cm
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-0 0 0 rg
-BT 1 0 0 1 0 2 Tm /F2 10 Tf 12 TL (Adding a Polygon with Rings) Tj T* ET
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-1 0 0 1 62.69291 208.2236 cm
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-0 0 0 rg
-BT 1 0 0 1 0 50 Tm /F1 10 Tf 12 TL .511488 Tw (Polygons consist of rings which mean they are closed. The first point and last point of a ring must be the) Tj T* 0 Tw .470574 Tw (same. PyShp enforces ring closure if the ring is incomplete when you add the shape. Polygons can have) Tj T* 0 Tw .539461 Tw (inner rings which create holes. Holes are defined by the order of the points. Normally points in a ring run) Tj T* 0 Tw .392339 Tw (clockwise. If the points run counter-clockwise then they [...]
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- [(\317\331s\275\0069x\241n:\236\316\022\315\016\321) (\317\331s\275\0069x\241n:\236\316\022\315\016\321)]
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diff --git a/README.txt b/README.txt
index db9c054..8e09eec 100644
--- a/README.txt
+++ b/README.txt
@@ -3,9 +3,9 @@ PyShp
:Author: Joel Lawhead - jlawhead at geospatialpython.com
-:Version 1.2.1
+:Version 1.2.2
-:Revised: May 11, 2014
+:Revised: January 9, 2015
.. contents::
@@ -293,6 +293,12 @@ The blockgroup key and population count:
>>> len(points)
2
+There is also an iterShapeRecords() method to iterate through large files:
+
+>>> shapeRecs = sf.iterShapeRecords()
+>>> for shape, rec in shapeRecs:
+... # do something here
+
Writing Shapefiles
++++++++++++++++++
diff --git a/changelog.txt b/changelog.txt
deleted file mode 100644
index 10d4955..0000000
--- a/changelog.txt
+++ /dev/null
@@ -1,69 +0,0 @@
-VERSION 1.2.1
-
-2014-05-11 Joel Lawhead <jlawhead at geospatialpython.com>
- *shapefile.py (u) fixed bug which failed to properly read some dbf fields in Python 3
-
-VERSION 1.2.0
-
-2013-09-05 Joel Lawhead <jlawhead at geospatialpython.com>
- *README.txt add example/test for writing a 3D polygon
-
-VERSION 1.1.9
-
-2013-07-27 Joel Lawhead <jlawhead at geospatialpython.com>
- *shapefile.py (Writer.__shpRecords) fixed inconsistency between Reader and Writer
- when referencing "z" and "m" values. This bug caused errors only when editing
- 3D shapefiles.
-
-VERSION 1.1.8
-
-2013-07-02 Joel Lawhead <jlawhead at geospatialpython.com>
- *shapefile.py (Writer.poly()) fixed a bug that resulted in incorrect part indexes
- *README.txt updated several errors in the documentation.
-
-2013-06-25 Joel Lawhead <jlawhead at geospatialpython.com>
- *shapefile.py (Reader.shapes(),Reader.iterShapes()) Updated to verify the file length by
- seeking to the end. A user reported shapefiles in the wild which had incorrect .shp file
- lengths reported in the header which crashed when reading or iterating shapes. Most
- insist on using the .shx file but there's no real reason to do so.
-
-VERSION 1.1.7
-
-2013-06-22 Joel Lawhead <jlawhead at geospatialpython.com>
-
- *shapefile.py (_Shape.__geo_interface__) Added Python __geo_interface__ convention
- to export shapefiles as GeoJSON.
-
- *shapefile.py (Reader.__init__) Used is_string() method to detect filenames passed
- as unicode strings.
-
- *shapefile.py (Reader.iterShapes) Added iterShapes() method to iterate through
- geometry records for parsing large files efficiently.
-
- *shapefile.py (Reader.iterRecords) Added iterRecords() method to iterate through
- dbf records efficiently in large files.
-
- *shapefile.py (Reader.shape) Modified shape() method to use iterShapes() if shx
- file is not available.
-
- *shapefile.py (main) Added __version__ attribute.
-
- *shapefile.py (Writer.record) Fixed bug which prevents writing the number 0 to
- dbf fields.
-
- *shapefile.py (Reader.__shape) Updated to calculate and seek the start of the next record. The
- shapefile spec does not require the content of a geometry record to be as long as the content
- length defined in the header. The result is you can delete features without modifying the
- record header allowing for empty space in records.
-
- *shapefile.py (Writer.poly) Added enforcement of closed polygons
-
- *shapefile.py (Writer.save) Added unique file name generator to use if no file names are passed
- to a writer instance when saving (ex. w.save()). The unique file name is returned as a string.
-
- *README.txt (main) Added tests for iterShapes(), iterRecords(), __geo_interface__()
-
- *README.txt (main) Updated "bbox" property documentation to match Esri specification.
-
-
-
\ No newline at end of file
diff --git a/setup.cfg b/setup.cfg
index b14b0bc..861a9f5 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
-[egg_info]
-tag_build =
-tag_date = 0
-tag_svn_revision = 0
-
+[egg_info]
+tag_build =
+tag_date = 0
+tag_svn_revision = 0
+
diff --git a/setup.py b/setup.py
index 91be422..f2a08ab 100644
--- a/setup.py
+++ b/setup.py
@@ -1,12 +1,13 @@
from setuptools import setup
setup(name='pyshp',
- version='1.2.1',
+ version='1.2.2',
description='Pure Python read/write support for ESRI Shapefile format',
long_description=open('README.txt').read(),
author='Joel Lawhead',
author_email='jlawhead at geospatialpython.com',
- url='http://code.google.com/p/pyshp',
+ url='https://github.com/GeospatialPython/pyshp',
+ download_url='https://github.com/GeospatialPython/pyshp/archive/1.2.2.tar.gz',
py_modules=['shapefile'],
license='MIT',
zip_safe=False,
diff --git a/shapefile.py b/shapefile.py
index 1fae493..c844ceb 100644
--- a/shapefile.py
+++ b/shapefile.py
@@ -2,13 +2,13 @@
shapefile.py
Provides read and write support for ESRI Shapefiles.
author: jlawhead<at>geospatialpython.com
-date: 20140507
-version: 1.2.1
+date: 2015/01/09
+version: 1.2.2
Compatible with Python versions 2.4-3.x
-version changelog: Fixed u() to just return the byte sequence on exception
+version changelog: Added `Reader.iterShapeRecords` to help work with larger files
"""
-__version__ = "1.2.1"
+__version__ = "1.2.2"
from struct import pack, unpack, calcsize, error
import os
@@ -16,6 +16,7 @@ import sys
import time
import array
import tempfile
+import itertools
#
# Constants for shape types
@@ -463,7 +464,8 @@ class Reader:
fieldDesc[1] = u(fieldDesc[1])
self.fields.append(fieldDesc)
terminator = dbf.read(1)
- assert terminator == b("\r")
+ if terminator != b("\r"):
+ raise ShapefileException("Shapefile dbf header lacks expected terminator. (likely corrupt?)")
self.fields.insert(0, ('DeletionFlag', 'C', 1, 0))
def __recordFmt(self):
@@ -492,18 +494,22 @@ class Reader:
continue
elif typ == "N":
value = value.replace(b('\0'), b('')).strip()
+ value = value.replace(b('*'), b('')) # QGIS NULL is all '*' chars
if value == b(''):
- value = 0
+ value = None
elif deci:
value = float(value)
else:
value = int(value)
elif typ == b('D'):
- try:
- y, m, d = int(value[:4]), int(value[4:6]), int(value[6:8])
- value = [y, m, d]
- except:
- value = value.strip()
+ if value.count(b('0')) == len(value): # QGIS NULL is all '0' chars
+ value = None
+ else:
+ try:
+ y, m, d = int(value[:4]), int(value[4:6]), int(value[6:8])
+ value = [y, m, d]
+ except:
+ value = value.strip()
elif typ == b('L'):
value = (value in b('YyTt') and b('T')) or \
(value in b('NnFf') and b('F')) or b('?')
@@ -562,6 +568,13 @@ class Reader:
return [_ShapeRecord(shape=rec[0], record=rec[1]) \
for rec in zip(self.shapes(), self.records())]
+ def iterShapeRecords(self):
+ """Returns a generator of combination geometry/attribute records for
+ all records in a shapefile."""
+ for shape, record in itertools.izip(self.iterShapes(), self.iterRecords()):
+ yield _ShapeRecord(shape=shape, record=record)
+
+
class Writer:
"""Provides write support for ESRI Shapefiles."""
def __init__(self, shapeType=None):
@@ -898,7 +911,10 @@ class Writer:
value = str(value)[0].upper()
else:
value = str(value)[:size].ljust(size)
- assert len(value) == size
+ if len(value) != size:
+ raise ShapefileException(
+ "Shapefile Writer unable to pack incorrect sized value"
+ " (size %d) into field '%s' (size %d)." % (len(value), fieldName, size))
value = b(value)
f.write(value)
--
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