There is a bug in the Agg rectangle clipping code that fails when the
clipping rectangle is outside of the bounds of the figure. Since your
example sets the edges of the axes right at the edges of the figure, at
certain DPIs, the axes clipping region actually extends outside of the
bounds of the figure.
This is fixed by this pull request, which should make it into the next
maintenance release:
https://github.com/matplotlib/matplotlib/pull/103
Mike
On 05/02/2011 06:52 AM, Emanuele Passera wrote:
Anyone can give me an help, please ?
Emanuele Passera
Software Engineer
Tele-Rilevamento Europa - T.R.E. srl
Via Vittoria Colonna, 7
20149 Milano – Italia
Tel.: +39.02.4343.121 - Fax: +39.02.4343.1230
emanuele.pass...@treuropa.com <mailto:emanuele.pass...@treuropa.com> -
www.treuropa.com <http://www.treuropa.com>
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On Thu, Apr 21, 2011 at 5:38 PM, Emanuele Passera
<emanuele.pass...@treuropa.com <mailto:emanuele.pass...@treuropa.com>>
wrote:
Hello everybody,
I am experiencing a strange behavior with the scatter() function when
using different figure canvas y dimensions in inches.
Executing the code listed below, I obtain good images when using
some dimensions
and totally white images when using others.
I have attached the input data buffers and the resulting images too.
#!/usr/bin/python
import numpy as n
import pylab as p
def scatterFun(x, y, data, yCanvasDimInches, imageName):
""" This function draws a scatterogram for the input data. """
canvasObj = p.figure(figsize=(8, yCanvasDimInches), dpi=100)
axisObj = canvasObj.add_axes([0, 0, 1, 1])
axisObj.scatter(x, y, 10, data, 'o')
canvasObj.savefig(imageName, dpi=100)
p.close()
# data buffer files
yPosFile = "/users/lelepass/python/test_scatter/yPos"
xPosFile = "/users/lelepass/python/test_scatter/xPos"
dataFile = "/users/lelepass/python/test_scatter/data"
# loading data
s = file(dataFile, 'rb').read()
data = n.fromstring(s, 'f')
s = file(yPosFile, 'rb').read()
y = n.fromstring(s, 'd')
s = file(xPosFile, 'rb').read()
x = n.fromstring(s, 'd')
# scatterogram generation
scatterFun(x, y, data, 6, "pippo1.png")
scatterFun(x, y, data, 6.01, "pippo2.png")
scatterFun(x, y, data, 6.015, "pippo3.png")
scatterFun(x, y, data, 6.02, "pippo4.png")
scatterFun(x, y, data, 6.028, "pippo5.png")
scatterFun(x, y, data, 6.03, "pippo6.png")
Can anyone help me ?
I use
Linux openSUSE 11.3 (x86_64)
Linux sat1 2.6.34.7-0.7-default #1 SMP 2010-12-13 11:13:53 +0100
x86_64 x86_64 x86_64 GNU/Linux
Python 2.6.5
numpy 1.5.1
matplotlib 1.0.1 with backend Agg v2.2
On the same system descripted above linking matplotlib from svn
matplotlib-matplotlib-v1.0.1-756-g3c43d83.tar.gz instead of the
installed one,
all the images are white.
If it can be of some help this strange behavior does not appear
with a system
Linux Ubuntu 9.10
Linux joshua 2.6.28-11-server #42-Ubuntu SMP Fri Apr 17 02:48:10
UTC 2009 i686 GNU/Linux
Python 2.6.4
numpy 1.3.0
matplotlib 0.99.0 with backend Agg v2.2
Executing the script with verbosity I get the subsequent output
$HOME=/users/lelepass
CONFIGDIR=/users/lelepass/.matplotlib
Bad key "numerix" on line 30 in
/users/lelepass/.matplotlib/matplotlibrc.
You probably need to get an updated matplotlibrc file from
http://matplotlib.sf.net/_static/matplotlibrc or from the
matplotlib source
distribution
matplotlib data path
/usr/lib64/python2.6/site-packages/matplotlib/mpl-data
loaded rc file /users/lelepass/.matplotlib/matplotlibrc
matplotlib version 1.0.1
verbose.level helpful
interactive is False
units is True
platform is linux2
Using fontManager instance from
/users/lelepass/.matplotlib/fontList.cache
backend agg version v2.2
findfont: Matching
:family=sans-serif:style=normal:variant=normal:weight=normal:stretch=normal:size=medium
to Bitstream Vera Sans
(/usr/lib64/python2.6/site-packages/matplotlib/mpl-data/fonts/ttf/Vera.ttf)
with score of 0.000000
Thank you all.
Bye.
Emanuele Passera
Software Engineer
Tele-Rilevamento Europa - T.R.E. srl
Via Vittoria Colonna, 7
20149 Milano – Italia
Tel.: +39.02.4343.121 <tel:%2B39.02.4343.121> - Fax:
+39.02.4343.1230 <tel:%2B39.02.4343.1230>
emanuele.pass...@treuropa.com
<mailto:emanuele.pass...@treuropa.com> - www.treuropa.com
<http://www.treuropa.com>
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