Hi
I finally managed to write a simplified version of my python script
which crashes when trying to save the figure as a postscript file. (this
is related to a previous post). See below. The script is provided, as
well as the full error message.
Sorry for the long script, but basically I am plotting 3x7 arrays via
pcolormesh. The script looks pretty dum because it was adapted from a
more complicated one where the bins/pixels are not exactly squared and
are rotated. In the version below I have tried to remove the unncessary
complication. And I get a failure from ghostscript when I try to save it
as eps. It works when I save it as a png.
Can anyone tell me what's wrong there? Again I am using:
### On an OpenSuse 11.2, 64b
xpdf distiller (but I tried others).
matplotlib 0.99.1.1
backend WXAgg version 2.8.10.1
Python 2.6.2 (r262:71600, Oct 24 2009, 03:15:21)
IPython 0.10 -- An enhanced Interactive Python.
THANKS
Eric
====================================================================
######################################################################
# Script to run which crashes when saving the figure as an eps file
######################################################################
#!/usr/bin/python
import numpy as num
import pylab as pl
def pos(i,j, w, h) :
return [0.05+ j*(w+0.02), 0.99 - (i+1)*(h+0.023)+0.025, w, h]
## Opening the figure
## Figure
pl.figure(1, figsize=(5*1.2, 7*1.5))
fig = pl.gcf()
pl.clf()
## Size of figure
figH = fig.get_figheight()
figW = fig.get_figwidth()
w = 0.99 / 3. -0.03
h = 0.99 / 7 - 0.022
## List of data to plot (I take 7 times the same stuff)
listgal = ["1","2","3","4","5","6",",7"]
## Initialisation of start, end and step
ngal = len(listgal)
start = [-30.,-30.]
end = [30.,30.]
npix = [80,80]
x = num.linspace(start[0],end[0], npix[0])
y = num.linspace(start[1],end[1], npix[1])
step = [x[1]-x[0], y[1]-y[0]]
X,Y = num.meshgrid(x,y)
## Initialisation of data
data = num.random.random((npix[0], npix[1]))
pl.ioff()
for k in range(ngal) :
gal = listgal[k]
## Coordinates
## Grid for rotation
Xp,Yp = X - step[0]/2., Y - step[1]/2.
X1,Y1 = X+step[0]/2.,Y+step[1]/2.
X2,Y2 = X-step[0]/2.,Y+step[1]/2.
X3,Y3 = X-step[0]/2.,Y-step[1]/2.
X4,Y4 = X+step[0]/2.,Y-step[1]/2.
minXc = num.min(num.concatenate((X1,X2,X3,X4)))
maxXc = num.max(num.concatenate((X1,X2,X3,X4)))
minYc = num.min(num.concatenate((Y1,Y2,Y3,Y4)))
maxYc = num.max(num.concatenate((Y1,Y2,Y3,Y4)))
dX = maxXc - minXc
dY = maxYc - minYc
## Deriving the right aspect ratio etc
aspectIma = dX / dY
aspectFig = figW / figH
aspectWin = w / h
if (aspectIma < aspectWin*aspectFig) :
maxXc = maxXc * aspectFig * aspectWin / aspectIma
minXc = minXc * aspectFig * aspectWin / aspectIma
else :
maxYc = maxYc * aspectIma / (aspectFig * aspectWin)
minYc = minYc * aspectIma / (aspectFig * aspectWin)
extentR = minXc, maxXc, minYc, maxYc
cmap = pl.cm.jet
minI, maxI = 0., 1.
cmap.set_bad('w',1.0)
j = 0
ax1 = fig.add_axes(pos(k,j, w, h))
map1 = ax1.pcolormesh(Xp,Yp,data,shading='flat',vmin=minI,vmax=maxI,
cmap=cmap)
pl.plot([0.],[0.],'k+', markersize=10, lw=3)
xticklabels = pl.getp(pl.gca(), 'xticklabels')
pl.setp(xticklabels, fontsize=8)
yticklabels = pl.getp(pl.gca(), 'yticklabels')
pl.setp(yticklabels, fontsize=8)
pl.axis(extentR)
j += 1
ax2 = fig.add_axes(pos(k,j, w, h))
map2 = ax2.pcolormesh(Xp,Yp,data,shading='flat',vmin=minI,vmax=maxI,
cmap=cmap)
pl.plot([0.],[0.],'k+', markersize=10, lw=3)
pl.axis(extentR)
ax2.set_yticks([])
xticklabels = pl.getp(pl.gca(), 'xticklabels')
pl.setp(xticklabels, fontsize=8)
pl.text(0.02,0.96, "%4.0f/%4.0f"%(minI,maxI),
verticalalignment='top',rotation='vertical',transform = ax2.transAxes,
fontsize=8)
j += 1
ax3 = fig.add_axes(pos(k,j, w, h))
map2 = ax3.pcolormesh(Xp,Yp,data,shading='flat',vmin=0.,vmax=1.,
cmap=cmap)
pl.plot([0.],[0.],'k+', markersize=10, lw=3)
pl.axis(extentR)
ax3.set_yticks([])
xticklabels = pl.getp(pl.gca(), 'xticklabels')
pl.setp(xticklabels, fontsize=8)
pl.text(0.02,0.96, "%4.0f/%4.0f"%(minI,maxI),
verticalalignment='top',rotation='vertical',transform = ax3.transAxes,
fontsize=8)
j += 1
pl.text(0.92,0.5, gal,
rotation='vertical',verticalalignment='center',transform = ax3.transAxes)
k += 1
pl.ion()
pl.show()
#######################################################################
## ERROR MESSAGE WHEN DOING:
## savefig("tmp.eps")
########################################################################
savefig("toto.eps")
Error: /limitcheck in --def--
Operand stack:
pa_c2c --nostringval--
Execution stack:
%interp_exit .runexec2 --nostringval-- --nostringval--
--nostringval-- 2 %stopped_push --nostringval-- --nostringval--
--nostringval-- false 1 %stopped_push 1878 1 3
%oparray_pop 1877 1 3 %oparray_pop 1861 1 3 %oparray_pop
1755 1 3 %oparray_pop --nostringval-- %errorexec_pop
.runexec2 --nostringval-- --nostringval-- --nostringval-- 2
%stopped_push --nostringval--
Dictionary stack:
--dict:1171/3371(ro)(G)-- --dict:1/20(G)-- --dict:74/200(L)--
--dict:5/6(ro)(L)-- --dict:179/300(L)-- --dict:44/200(L)--
--dict:65534/65534(L)--
Current allocation mode is local
Last OS error: 2
Current file position is 14229051
GPL Ghostscript 8.64: Unrecoverable error, exit code 1
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call
last)
/science/ATLAS3D/python/Analysis/Try.py in <module>()
----> 1
2
3
4
5
/usr/lib64/python2.6/site-packages/matplotlib/pyplot.pyc in
savefig(*args, **kwargs)
354 def savefig(*args, **kwargs):
355 fig = gcf()
--> 356 return fig.savefig(*args, **kwargs)
357 if Figure.savefig.__doc__ is not None:
358 savefig.__doc__ = dedent(Figure.savefig.__doc__)
/usr/lib64/python2.6/site-packages/matplotlib/figure.pyc in
savefig(self, *args, **kwargs)
1030 patch.set_alpha(0.0)
1031
-> 1032 self.canvas.print_figure(*args, **kwargs)
1033
1034 if transparent:
/usr/lib64/python2.6/site-packages/matplotlib/backends/backend_wxagg.pyc
in print_figure(self, filename, *args, **kwargs)
98 def print_figure(self, filename, *args, **kwargs):
99 # Use pure Agg renderer to draw
--> 100 FigureCanvasAgg.print_figure(self, filename, *args,
**kwargs)
101 # Restore the current view; this is needed because the
102 # artist contains methods rely on particular attributes
/usr/lib64/python2.6/site-packages/matplotlib/backend_bases.pyc in
print_figure(self, filename, dpi, facecolor, edgecolor, orientation,
format, **kwargs)
1474 orientation=orientation,
1475 bbox_inches_restore=_bbox_inches_restore,
-> 1476 **kwargs)
1477 finally:
1478 if bbox_inches and restore_bbox:
/usr/lib64/python2.6/site-packages/matplotlib/backend_bases.pyc in
print_eps(self, *args, **kwargs)
1327 from backends.backend_ps import FigureCanvasPS # lazy
import
1328 ps = self.switch_backends(FigureCanvasPS)
-> 1329 return ps.print_eps(*args, **kwargs)
1330
1331 def print_pdf(self, *args, **kwargs):
/usr/lib64/python2.6/site-packages/matplotlib/backends/backend_ps.pyc in
print_eps(self, outfile, *args, **kwargs)
853
854 def print_eps(self, outfile, *args, **kwargs):
--> 855 return self._print_ps(outfile, 'eps', *args, **kwargs)
856
857
/usr/lib64/python2.6/site-packages/matplotlib/backends/backend_ps.pyc in
_print_ps(self, outfile, format, *args, **kwargs)
882 self._print_figure_tex(outfile, format, imagedpi,
facecolor, edgecolor,
883 orientation, isLandscape,
papertype,
--> 884 **kwargs)
885 else:
886 self._print_figure(outfile, format, imagedpi,
facecolor, edgecolor,
/usr/lib64/python2.6/site-packages/matplotlib/backends/backend_ps.pyc in
_print_figure_tex(self, outfile, format, dpi, facecolor, edgecolor,
orientation, isLandscape, papertype, **kwargs)
1188 gs_distill(tmpfile, isEPSF, ptype=papertype,
bbox=bbox)
1189 elif rcParams['ps.usedistiller'] == 'xpdf':
-> 1190 xpdf_distill(tmpfile, isEPSF, ptype=papertype,
bbox=bbox)
1191 elif rcParams['text.usetex']:
1192 if False: pass # for debugging
/usr/lib64/python2.6/site-packages/matplotlib/backends/backend_ps.pyc in
xpdf_distill(tmpfile, eps, ptype, bbox)
1345 fh = file(outfile)
1346 if exit_status: raise RuntimeError('ps2pdf was not able to
process your \
-> 1347 image.\n\Here is the report generated by ghostscript:\n\n' +
fh.read())
1348 else: verbose.report(fh.read(), 'debug')
1349 fh.close()
RuntimeError: ps2pdf was not able to process your image.
\Here is the report generated by ghostscript:
------------------------------------------------------------------------------
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