Re: [Matplotlib-users] matplotlib/__init__.py : gs version parsing problem
On Sunday 02 December 2007 06:55:01 am hjc520070 wrote:
> Xavier Gnata wrote:
> > Hi,
> >
> > Quoting matplotlib/__init__.py :
> >
> > def checkdep_ghostscript():
> > try:
> > if sys.platform == 'win32':
> > command = 'gswin32c -v'
> > else:
> > command = 'gs -v'
> > stdin, stdout = os.popen4(command)
> > line = stdout.readlines()[0]
> > v = line.split()[2]
> > vtest = '.'.join(v.split('.')[:2]) # deal with version numbers
> > like '7.07.1'
> > float(vtest)
> > return vtest
> > except (IndexError, ValueError):
> > return None
> >
> > It fails on debian sid because 'gs -v' returns "GPL Ghostscript SVN
> > PRE-RELEASE 8.61 (2007-08-02)\n"
> >
> > Anyway, the parser will be ugly because it has to deal with version
> > numbers like '7.07.1'.
> > Should I propose a trivial patch to get thinks working on debian sid ?
> >
> > Xavier
> > ps :Why is there no standard way (like -v or --version) on *unix to get
> > the version *number*?? Only the version number. Why :(
> >
> > --
> >
> > Xavier Gnata
> > CRAL - Observatoire de Lyon
> > 9, avenue Charles André
> > 69561 Saint Genis Laval cedex
> > Phone: +33 4 78 86 85 28
> > Fax: +33 4 78 86 83 86
> > E-mail: [EMAIL PROTECTED]
> >
> >
> >
> > -
> > This SF.net email is sponsored by: Microsoft
> > Defy all challenges. Microsoft(R) Visual Studio 2005.
> > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/
> > ___
> > Matplotlib-users mailing list
> > Matplotlib-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
> Yeah , I did face the same problem . My code is following:
> There seems to be something wrong in "ax.imshow(im)", I can't get the
> answer , Can sb help me .
The imshow documentation says "X may be a float array, a uint8 array or a PIL
image", but you are passing it an AxesImage instance, which wont work.
> The error message"ValueError: need more than 0 values to unpack"
> Thank you .
>
> # -*- coding:gb2312 -*-
> import wx
> from pylab import *
> from matplotlib.backends.backend_wx import FigureCanvasWx
> from matplotlib.figure import Figure
> from matplotlib.axes import *
> from numpy import *
>
> #-
> x=array(range(0,100))
> y=array(range(0,100))
> z=rand(100,100)
> figure(1)
> im=imshow(z, interpolation='bilinear', origin='lower',cmap=cm.gray,
> extent=(0,100,0,100))
> levels = arange(0.3, 0.4, 0.9)
> contour(x,y,z,levels,origin='lower',linewidths=2,extent=(0,100,0,100))
>
>
> fig=figure(2)
> ax = fig.add_subplot(111)
> ax.imshow(im)
> ax.set_xlim(0,3)
> ax.set_ylim(0,2)
> show()
-
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Re: [Matplotlib-users] matplotlib/__init__.py : gs version parsing problem
Xavier Gnata wrote:
>
> Hi,
>
> Quoting matplotlib/__init__.py :
>
> def checkdep_ghostscript():
> try:
> if sys.platform == 'win32':
> command = 'gswin32c -v'
> else:
> command = 'gs -v'
> stdin, stdout = os.popen4(command)
> line = stdout.readlines()[0]
> v = line.split()[2]
> vtest = '.'.join(v.split('.')[:2]) # deal with version numbers
> like '7.07.1'
> float(vtest)
> return vtest
> except (IndexError, ValueError):
> return None
>
> It fails on debian sid because 'gs -v' returns "GPL Ghostscript SVN
> PRE-RELEASE 8.61 (2007-08-02)\n"
>
> Anyway, the parser will be ugly because it has to deal with version
> numbers like '7.07.1'.
> Should I propose a trivial patch to get thinks working on debian sid ?
>
> Xavier
> ps :Why is there no standard way (like -v or --version) on *unix to get
> the version *number*?? Only the version number. Why :(
>
> --
>
> Xavier Gnata
> CRAL - Observatoire de Lyon
> 9, avenue Charles André
> 69561 Saint Genis Laval cedex
> Phone: +33 4 78 86 85 28
> Fax: +33 4 78 86 83 86
> E-mail: [EMAIL PROTECTED]
>
>
>
> -
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2005.
> http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/
> ___
> Matplotlib-users mailing list
> Matplotlib-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>
Yeah , I did face the same problem . My code is following:
There seems to be something wrong in "ax.imshow(im)", I can't get the answer
, Can sb help me .
The error message"ValueError: need more than 0 values to unpack"
Thank you .
# -*- coding:gb2312 -*-
import wx
from pylab import *
from matplotlib.backends.backend_wx import FigureCanvasWx
from matplotlib.figure import Figure
from matplotlib.axes import *
from numpy import *
#-
x=array(range(0,100))
y=array(range(0,100))
z=rand(100,100)
figure(1)
im=imshow(z, interpolation='bilinear', origin='lower',cmap=cm.gray,
extent=(0,100,0,100))
levels = arange(0.3, 0.4, 0.9)
contour(x,y,z,levels,origin='lower',linewidths=2,extent=(0,100,0,100))
fig=figure(2)
ax = fig.add_subplot(111)
ax.imshow(im)
ax.set_xlim(0,3)
ax.set_ylim(0,2)
show()
--
View this message in context:
http://www.nabble.com/matplotlib-__init__.py-%3A-gs-version-parsing-problem-tf4821980.html#a14114656
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[Matplotlib-users] matplotlib/__init__.py : gs version parsing problem
Hi,
Quoting matplotlib/__init__.py :
def checkdep_ghostscript():
try:
if sys.platform == 'win32':
command = 'gswin32c -v'
else:
command = 'gs -v'
stdin, stdout = os.popen4(command)
line = stdout.readlines()[0]
v = line.split()[2]
vtest = '.'.join(v.split('.')[:2]) # deal with version numbers
like '7.07.1'
float(vtest)
return vtest
except (IndexError, ValueError):
return None
It fails on debian sid because 'gs -v' returns "GPL Ghostscript SVN
PRE-RELEASE 8.61 (2007-08-02)\n"
Anyway, the parser will be ugly because it has to deal with version
numbers like '7.07.1'.
Should I propose a trivial patch to get thinks working on debian sid ?
Xavier
ps :Why is there no standard way (like -v or --version) on *unix to get
the version *number*?? Only the version number. Why :(
--
Xavier Gnata
CRAL - Observatoire de Lyon
9, avenue Charles André
69561 Saint Genis Laval cedex
Phone: +33 4 78 86 85 28
Fax: +33 4 78 86 83 86
E-mail: [EMAIL PROTECTED]
-
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2005.
http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/
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Re: [Matplotlib-users] matplotlib/__init__.py : gs version parsing problem
On Nov 16, 2007 10:03 AM, Xavier Gnata <[EMAIL PROTECTED]> wrote: > /usr/lib/python2.4/site-packages/matplotlib/image.py in get_extent(self) > 286 sz = self.get_size() > 287 #print 'sz', sz > --> 288 numrows, numcols = sz > 289 if self.origin == 'upper': > 290 return (-0.5, numcols-0.5, numrows-0.5, -0.5) > > ValueError: need more than 1 value to unpack > > but it is another topic. It looks like you may be passing in a 1D array to imshow or to im.set_array. Could you post a code sample? JDH - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] matplotlib/__init__.py : gs version parsing problem
On Friday 16 November 2007 10:28:25 am Xavier Gnata wrote:
> Hi,
>
> Quoting matplotlib/__init__.py :
>
> def checkdep_ghostscript():
> try:
> if sys.platform == 'win32':
> command = 'gswin32c -v'
> else:
> command = 'gs -v'
> stdin, stdout = os.popen4(command)
> line = stdout.readlines()[0]
> v = line.split()[2]
> vtest = '.'.join(v.split('.')[:2]) # deal with version numbers
> like '7.07.1'
> float(vtest)
> return vtest
> except (IndexError, ValueError):
> return None
>
> It fails on debian sid because 'gs -v' returns "GPL Ghostscript SVN
> PRE-RELEASE 8.61 (2007-08-02)\n"
>
> Anyway, the parser will be ugly because it has to deal with version
> numbers like '7.07.1'.
> Should I propose a trivial patch to get thinks working on debian sid ?
>
> Xavier
> ps :Why is there no standard way (like -v or --version) on *unix to get
> the version *number*?? Only the version number. Why :(
This was fixed a while back in svn, but thanks for the report. It turns out
that --version does return only the version number.
Darren
-
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Re: [Matplotlib-users] matplotlib/__init__.py : gs version parsing problem
Darren Dale wrote:
> On Friday 16 November 2007 10:28:25 am Xavier Gnata wrote:
>
>> Hi,
>>
>> Quoting matplotlib/__init__.py :
>>
>> def checkdep_ghostscript():
>> try:
>> if sys.platform == 'win32':
>> command = 'gswin32c -v'
>> else:
>> command = 'gs -v'
>> stdin, stdout = os.popen4(command)
>> line = stdout.readlines()[0]
>> v = line.split()[2]
>> vtest = '.'.join(v.split('.')[:2]) # deal with version numbers
>> like '7.07.1'
>> float(vtest)
>> return vtest
>> except (IndexError, ValueError):
>> return None
>>
>> It fails on debian sid because 'gs -v' returns "GPL Ghostscript SVN
>> PRE-RELEASE 8.61 (2007-08-02)\n"
>>
>> Anyway, the parser will be ugly because it has to deal with version
>> numbers like '7.07.1'.
>> Should I propose a trivial patch to get thinks working on debian sid ?
>>
>> Xavier
>> ps :Why is there no standard way (like -v or --version) on *unix to get
>> the version *number*?? Only the version number. Why :(
>>
>
>
> This was fixed a while back in svn, but thanks for the report. It turns out
> that --version does return only the version number.
>
> Darren
>
>
Unfortunately, I'm not able to get the svn version working :
imshow always fails :
/usr/lib/python2.4/site-packages/matplotlib/pyplot.py in imshow(*args,
**kwargs)
1673 hold(h)
1674 try:
-> 1675 ret = gca().imshow(*args, **kwargs)
1676 draw_if_interactive()
1677 except:
/usr/lib/python2.4/site-packages/matplotlib/axes.py in imshow(self, X,
cmap, norm, aspect, interpolation, alpha, vmin, vmax, origin, extent,
shape, filternorm, filterrad, imlim, **kwargs)
4435 im.autoscale_None()
4436
-> 4437 xmin, xmax, ymin, ymax = im.get_extent()
4438
4439 corners = (xmin, ymin), (xmax, ymax)
/usr/lib/python2.4/site-packages/matplotlib/image.py in get_extent(self)
286 sz = self.get_size()
287 #print 'sz', sz
--> 288 numrows, numcols = sz
289 if self.origin == 'upper':
290 return (-0.5, numcols-0.5, numrows-0.5, -0.5)
ValueError: need more than 1 value to unpack
but it is another topic.
Xavier.
> -
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2005.
> http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/
> ___
> Matplotlib-users mailing list
> Matplotlib-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>
>
--
Xavier Gnata
CRAL - Observatoire de Lyon
9, avenue Charles André
69561 Saint Genis Laval cedex
Phone: +33 4 78 86 85 28
Fax: +33 4 78 86 83 86
E-mail: [EMAIL PROTECTED]
-
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2005.
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