[med-svn] [python-mne] 29/353: ENH: preload and setitem for raw
Yaroslav Halchenko
debian at onerussian.com
Fri Nov 27 17:24:26 UTC 2015
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yoh pushed a commit to tag 0.4
in repository python-mne.
commit 2ff43d2a852dcecfde96920a7c606dd111fb8348
Author: Martin Luessi <mluessi at nmr.mgh.harvard.edu>
Date: Fri Dec 16 11:31:45 2011 -0500
ENH: preload and setitem for raw
---
mne/fiff/raw.py | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/mne/fiff/raw.py b/mne/fiff/raw.py
index bd72cbe..a6dd4f7 100644
--- a/mne/fiff/raw.py
+++ b/mne/fiff/raw.py
@@ -154,6 +154,7 @@ class Raw(dict):
self.fid = fid
self.info = info
+ self._preloaded = False
def __getitem__(self, item):
"""getting raw data content with python slicing"""
@@ -184,10 +185,21 @@ class Raw(dict):
if sel is not None and len(sel) == 0:
raise Exception("Empty channel list")
+ if self._preloaded:
+ return (self.data[sel, start:stop], self.times[start:stop])
return read_raw_segment(self, start=start, stop=stop, sel=sel)
else:
return super(Raw, self).__getitem__(item)
+ def preload(self):
+ """preload the raw data into memory for faster indexing
+ """
+ if not self._preloaded:
+ data, times = self[:, :]
+ self.data = data
+ self.times = times
+ self._preloaded = True
+
def save(self, fname, picks=None, tmin=0, tmax=None, buffer_size_sec=10,
drop_small_buffer=False):
"""Save raw data to file
--
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