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Commit02a0455

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Improve formatting of imshow() cursor data when a colorbar exists.
When a colorbar exists, use its formatter to format cursor data.For example, after```imshow([[10000, 10001]]); colorbar()```currently the cursor data on either pixel is rendered as 1e4, but afterthis patch it becomes 0.0+1e4 / 1.0+1e4, or 10000.0 / 10001.0 if`rcParams["axes.formatter.useoffset"]` is set to False. (Even thoughthe version with the offset text may not be the most esthetic, it'sclearly more informative than the current behavior...)It would be nice if this worked even for ScalarMappables that don'thave a colorbar; this may include extracting the Formatter selectioncode out of the colorbar code into something generally applicable toScalarMappables, or just generating a hidden colorbar "on-the-fly" ifneeded just for the purpose of getting its Formatter.
1 parentf93222a commit02a0455

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3 files changed

+21
-7
lines changed

3 files changed

+21
-7
lines changed

‎lib/matplotlib/artist.py

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,7 @@
11
fromcollectionsimportOrderedDict,namedtuple
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fromfunctoolsimportwraps
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importinspect
4+
fromnumbersimportNumber
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importre
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importwarnings
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@@ -1159,8 +1160,8 @@ def format_cursor_data(self, data):
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data[0]
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except (TypeError,IndexError):
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data= [data]
1162-
data_str=', '.join('{:0.3g}'.format(item)foritemindataif
1163-
isinstance(item,(np.floating,np.integer,int,float)))
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data_str=', '.join('{:0.3g}'.format(item)foritemindata
1164+
ifisinstance(item,Number))
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return"["+data_str+"]"
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@property

‎lib/matplotlib/cbook/__init__.py

Lines changed: 11 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -302,11 +302,17 @@ def local_over_kwdict(local_var, kwargs, *keys):
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303303

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defstrip_math(s):
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"""remove latex formatting from mathtext"""
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remove= (r'\mathdefault',r'\rm',r'\cal',r'\tt',r'\it','\\','{','}')
307-
s=s[1:-1]
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forrinremove:
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s=s.replace(r,'')
305+
"""
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Remove latex formatting from mathtext.
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Only handles fully math and fully non-math strings.
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"""
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ifs[:1]==s[-1:]=="$":
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s=s[1:-1]
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remove= [
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r'\mathdefault',r'\rm',r'\cal',r'\tt',r'\it','\\','{','}']
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forrinremove:
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s=s.replace(r,'')
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returns
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‎lib/matplotlib/image.py

Lines changed: 7 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -907,6 +907,13 @@ def get_cursor_data(self, event):
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else:
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returnarr[i,j]
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defformat_cursor_data(self,data):
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ifself.colorbar:
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return (cbook.strip_math(self.colorbar.formatter(data))
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+cbook.strip_math(self.colorbar.formatter.get_offset()))
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else:
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returnsuper().format_cursor_data(data)
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classNonUniformImage(AxesImage):
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def__init__(self,ax,*,interpolation='nearest',**kwargs):

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