[Python-modules-team] Bug#573179: [matplotlib-devel] Bug#573179: "AttributeError: 'numpy.bool_' object has no attribute '_mask'" whenever imshow'ing masked array
Eric Firing
efiring at hawaii.edu
Tue Mar 16 20:09:55 UTC 2010
Sandro Tosi wrote:
> forwarded 573179 matplotlib-devel at lists.sourceforge.net
> thanks
>
> Hello Matplotlib developers,
> I'm forwarding this bug a Debian user reported some days ago. It would
> be nice it you could give it a look
Using svn trunk mpl and numpy 1.5.0.dev8042, I can't reproduce it; I get
a blank figure and a blank colorbar, with no exception. I suspect the
difference is in numpy.ma, not matplotlib.
Eric
>
> Thanks in advance,
> Sandro
>
> On Tue, Mar 9, 2010 at 17:05, Yaroslav Halchenko <debian at onerussian.com> wrote:
>> Package: python-matplotlib
>> Version: 0.99.1.2-3
>> Severity: normal
>>
>>
>> throws an exception while comparing two masked arrays which have no values (all
>> masked out)... sure thing it can't determine vmin/vmax to be used (unless clim
>> is used explicitely), but the exception which is thrown is non-informative. I
>> thought that upstream might want to make it more user-friendly -- please
>> forward upstream.
>>
>> Here is the code to reproduce:
>> import pylab as pl
>> import numpy as np
>>
>> size = (5, 5)
>> d = np.ones(size)
>> mask = d.astype(bool)
>>
>> md = np.ma.masked_array(d, mask)
>> pl.imshow(md)
>> # explicit clim would eliminate the problem
>> #pl.clim(0, 1)
>> pl.colorbar()
>>
>> and here is the traceback:
>>
>> Traceback (most recent call last):
>> File "/usr/lib/python2.5/lib-tk/Tkinter.py", line 1417, in __call__
>> return self.func(*args)
>> File "/usr/lib/pymodules/python2.5/matplotlib/backends/backend_tkagg.py", line 212, in resize
>> self.show()
>> File "/usr/lib/pymodules/python2.5/matplotlib/backends/backend_tkagg.py", line 215, in draw
>> FigureCanvasAgg.draw(self)
>> File "/usr/lib/pymodules/python2.5/matplotlib/backends/backend_agg.py", line 314, in draw
>> self.figure.draw(self.renderer)
>> File "/usr/lib/pymodules/python2.5/matplotlib/artist.py", line 46, in draw_wrapper
>> draw(artist, renderer, *kl)
>> File "/usr/lib/pymodules/python2.5/matplotlib/figure.py", line 773, in draw
>> for a in self.axes: a.draw(renderer)
>> File "/usr/lib/pymodules/python2.5/matplotlib/artist.py", line 46, in draw_wrapper
>> draw(artist, renderer, *kl)
>> File "/usr/lib/pymodules/python2.5/matplotlib/axes.py", line 1701, in draw
>> im.draw(renderer)
>> File "/usr/lib/pymodules/python2.5/matplotlib/artist.py", line 46, in draw_wrapper
>> draw(artist, renderer, *kl)
>> File "/usr/lib/pymodules/python2.5/matplotlib/image.py", line 237, in draw
>> im = self.make_image(renderer.get_image_magnification())
>> File "/usr/lib/pymodules/python2.5/matplotlib/image.py", line 182, in make_image
>> x = self.to_rgba(self._A, self._alpha)
>> File "/usr/lib/pymodules/python2.5/matplotlib/cm.py", line 166, in to_rgba
>> x = self.norm(x)
>> File "/usr/lib/pymodules/python2.5/matplotlib/colors.py", line 763, in __call__
>> elif vmin==vmax:
>> File "/usr/lib/python2.5/site-packages/numpy/ma/core.py", line 3119, in __eq__
>> check._mask = mask
>> AttributeError: 'numpy.bool_' object has no attribute '_mask'
>>
>>
>>
>>
>>
>>
>> -- System Information:
>> Debian Release: squeeze/sid
>> APT prefers unstable
>> APT policy: (901, 'unstable'), (900, 'testing'), (300, 'experimental')
>> Architecture: amd64 (x86_64)
>>
>> Kernel: Linux 2.6.31-1-amd64 (SMP w/2 CPU cores)
>> Locale: LANG=en_US, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
>> Shell: /bin/sh linked to /bin/bash
>>
>> Versions of packages python-matplotlib depends on:
>> ii libatk1.0-0 1.28.0-1 The ATK accessibility toolkit
>> ii libc6 2.10.2-5 Embedded GNU C Library: Shared lib
>> ii libcairo2 1.8.8-2 The Cairo 2D vector graphics libra
>> ii libfontconfig1 2.8.0-2 generic font configuration library
>> ii libfreetype6 2.3.11-1 FreeType 2 font engine, shared lib
>> ii libgcc1 1:4.4.2-2 GCC support library
>> ii libglib2.0-0 2.22.4-1 The GLib library of C routines
>> ii libgtk2.0-0 2.18.6-1 The GTK+ graphical user interface
>> ii libpango1.0-0 1.26.0-1 Layout and rendering of internatio
>> ii libpng12-0 1.2.40-1 PNG library - runtime
>> ii libstdc++6 4.4.2-2 The GNU Standard C++ Library v3
>> ii python 2.5.4-9 An interactive high-level object-o
>> ii python-cairo 1.8.6-1 Python bindings for the Cairo vect
>> ii python-dateutil 1.4.1-3 powerful extensions to the standar
>> ii python-gobject 2.16.1-1 Python bindings for the GObject li
>> ii python-matplotlib-data 0.99.1.2-3 Python based plotting system (data
>> ii python-numpy 1:1.3.0-3+b1 Numerical Python adds a fast array
>> ii python-pyparsing 1.5.2-1 Python parsing module
>> ii python-support 1.0.6.1 automated rebuilding support for P
>> ii python-tz 2009l-1 Python version of the Olson timezo
>> ii tcl8.5 8.5.7-1 Tcl (the Tool Command Language) v8
>> ii tk8.5 8.5.7-1 Tk toolkit for Tcl and X11, v8.5 -
>> ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime
>>
>> Versions of packages python-matplotlib recommends:
>> ii python-glade2 2.16.0-1 GTK+ bindings: Glade support
>> ii python-tk 2.5.2-1.1 Tkinter - Writing Tk applications
>>
>> Versions of packages python-matplotlib suggests:
>> ii dvipng 1.11-1 convert DVI files to PNG graphics
>> ii ipython 0.10-1 enhanced interactive Python shell
>> ii librsvg2-common 2.26.0-1 SAX-based renderer library for SVG
>> ii python-configobj 4.5.2-2 a simple but powerful config file
>> pn python-excelerator <none> (no description available)
>> ii python-gtk2 2.16.0-1 Python bindings for the GTK+ widge
>> ii python-matplotlib-doc 0.99.0-1 Python based plotting system (docu
>> pn python-qt3 <none> (no description available)
>> ii python-qt4 4.6-1 Python bindings for Qt4
>> ii python-scipy 0.7.0-2+b1 scientific tools for Python
>> ii python-traits 3.2.0-1 Manifest typing and reactive progr
>> ii python-wxgtk2.8 2.8.10.1-3 wxWidgets Cross-platform C++ GUI t
>> ii texlive-extra-utils 2007.dfsg.2-7 TeX Live: TeX auxiliary programs
>> ii texlive-latex-extra 2007.dfsg.17-2 TeX Live: LaTeX supplementary pack
>>
>> -- no debconf information
>>
>>
>>
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