I'm having two (presumably) unrelated problems with contourf 1) One of my datasets seems to trigger a bug:
Specifically when I run the appended script (http://clouds.eos.ubc.ca/~phil/matplotlib_error/arrayplot.py) using the pickled array: (http://clouds.eos.ubc.ca/~phil/matplotlib_error/array.pic) I get: http://clouds.eos.ubc.ca/~phil/matplotlib_error/surfaceOnTop.png but if I try to flip the pressure axis by uncommenting: axes1.set_ylim([1000,250]) the rightside-up plot is corrupted http://clouds.eos.ubc.ca/~phil/matplotlib_error/surfaceOnBottom.png 2) It looks like the alpha=0.25 setting for the normalized set_under/over colormap works for the colorbar (the little triangles are transparent) but not for the actually filled contours (the under values are saturated black/salmon) All of this is with the current matplotlib svn snapshot (revision 4986). Both the top and bottom runs give the same --verbose-helpful output: ~/public_html/matplotlib_error [EMAIL PROTECTED] python arrayplot.py --verbose-helpful $HOME=/home/phil CONFIGDIR=/home/phil/.matplotlib matplotlib data path /home/phil/usr251_Centos/lib/python2.5/site-packages/matplotlib/mpl-data loaded rc file /home/phil/.matplotlib/matplotlibrc matplotlib version 0.98pre verbose.level helpful interactive is False units is False platform is linux2 numerix numpy 1.0.5.dev4731 Using fontManager instance from /home/phil/.matplotlib/fontManager.cache backend Agg version v2.2 Warning: invalid value encountered in reduce Warning: invalid value encountered in reduce thanks in advance for any suggestions -- Phil #-------------------- import numpy as N import matplotlib as mpl import pickle mpl.use('Agg') from pylab import figure, show, close,setp,savefig fig1=figure(1) fig1.clf() axloc = [.1, .1, .67, .8] colorbarloc = [.82, .1, .025, .8] axes1 = fig1.add_axes(axloc) colorbaraxes = fig1.add_axes(colorbarloc) vmin, vmax = (-40, 20) norm = mpl.colors.normalize(vmin = vmin, vmax = vmax) cmap = mpl.cm.jet cmap.set_over('black', 0.25) cmap.set_under('salmon', 0.25) picFile=open('array.pic','r') plotArray=pickle.load(picFile) picFile.close() timeMarks=N.arange(0,9) presslevs=N.arange(1000,200,-10) contplot = axes1.contourf(timeMarks,presslevs,plotArray,N.linspace(vmin,vmax,7), norm=norm, extend='both', cmap=cmap) #axes1.set_ylim([1000,250]) fig1.colorbar(contplot,colorbaraxes) labelHandle=colorbaraxes.set_ylabel('temperature (deg C)') setp(labelHandle,'rotation',-90,'ha','left') axes1.set_xticks(timeMarks[[0,4,8]]) axes1.set_ylabel('pressure (hPa)') axes1.set_xlabel('Date') axes1.set_title('LXK balloon sondes') #savefig('surfaceOnBottom') savefig('surfaceOnTop') ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
