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SF.net SVN: matplotlib:[8328] trunk/matplotlib/lib/matplotlib
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From: <md...@us...> - 2010-05-20 16:20:00
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Revision: 8328
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=8328&view=rev
Author: mdboom
Date: 2010-05-20 16:19:53 +0000 (Thu, 20 May 2010)
Log Message:
-----------
Fix bug in symlog with 0-values in data. (Thanks Christer)
Modified Paths:
--------------
trunk/matplotlib/lib/matplotlib/tests/test_axes.py
trunk/matplotlib/lib/matplotlib/ticker.py
Added Paths:
-----------
trunk/matplotlib/lib/matplotlib/tests/baseline_images/test_axes/symlog.pdf
trunk/matplotlib/lib/matplotlib/tests/baseline_images/test_axes/symlog.png
trunk/matplotlib/lib/matplotlib/tests/baseline_images/test_axes/symlog.svg
Added: trunk/matplotlib/lib/matplotlib/tests/baseline_images/test_axes/symlog.pdf
===================================================================
(Binary files differ)
Property changes on: trunk/matplotlib/lib/matplotlib/tests/baseline_images/test_axes/symlog.pdf
___________________________________________________________________
Added: svn:mime-type
+ application/octet-stream
Added: trunk/matplotlib/lib/matplotlib/tests/baseline_images/test_axes/symlog.png
===================================================================
(Binary files differ)
Property changes on: trunk/matplotlib/lib/matplotlib/tests/baseline_images/test_axes/symlog.png
___________________________________________________________________
Added: svn:mime-type
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Added: trunk/matplotlib/lib/matplotlib/tests/baseline_images/test_axes/symlog.svg
===================================================================
--- trunk/matplotlib/lib/matplotlib/tests/baseline_images/test_axes/symlog.svg (rev 0)
+++ trunk/matplotlib/lib/matplotlib/tests/baseline_images/test_axes/symlog.svg 2010-05-20 16:19:53 UTC (rev 8328)
@@ -0,0 +1,521 @@
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Modified: trunk/matplotlib/lib/matplotlib/tests/test_axes.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/tests/test_axes.py 2010-05-20 14:59:33 UTC (rev 8327)
+++ trunk/matplotlib/lib/matplotlib/tests/test_axes.py 2010-05-20 16:19:53 UTC (rev 8328)
@@ -445,7 +445,21 @@
ax1.fill_between(x, y1, y2, where=y2<=y1, facecolor='red', interpolate=True)
fig.savefig('fill_between_interpolate')
-
+
+@image_comparison(baseline_images=['symlog'])
+def test_symlog():
+ x = np.array([0,1,2,4,6,9,12,24])
+ y = np.array([1000000, 500000, 100000, 100, 5, 0, 0, 0])
+
+ fig = plt.figure()
+ ax = fig.add_subplot(111)
+ ax.plot(x, y)
+ ax.set_yscale('symlog')
+ ax.set_xscale=('linear')
+ ax.set_ylim(-1,10000000)
+
+ fig.savefig('symlog')
+
if __name__=='__main__':
import nose
nose.runmodule(argv=['-s','--with-doctest'], exit=False)
Modified: trunk/matplotlib/lib/matplotlib/ticker.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/ticker.py 2010-05-20 14:59:33 UTC (rev 8327)
+++ trunk/matplotlib/lib/matplotlib/ticker.py 2010-05-20 16:19:53 UTC (rev 8328)
@@ -1178,16 +1178,21 @@
def decade_down(x, base=10):
'floor x to the nearest lower decade'
-
+ if x == 0.0:
+ return -base
lx = math.floor(math.log(x)/math.log(base))
return base**lx
def decade_up(x, base=10):
'ceil x to the nearest higher decade'
+ if x == 0.0:
+ return base
lx = math.ceil(math.log(x)/math.log(base))
return base**lx
def is_decade(x,base=10):
+ if x == 0.0:
+ return True
lx = math.log(x)/math.log(base)
return lx==int(lx)
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