matplotlib-users Mailing List for matplotlib

Hi,
The attached png (generated from GMT) (also visible here:
http://sayatnova.jpl.nasa.gov/genesis/swhk_jmap_145.png )
shows a non-linear color scale which I am trying to replicate using
matplotlib. Could anyone point me in the right direction as to the best
approach to do this? I've seen posts where I can subclass the
colormap/normalize classes and customize them. I've also seen
James Boyle's gmtColormap.py script to load GMT colormaps into
matplotlib colormaps however I would like to achieve a general
solution to this. The following code is the generalized function
I use to generate maps:
def plotMap(pngFile,figsize,aspect,plotTitle,colorbarTitle,
 mapData,dataMin,dataMax,lonMin,lonMax,latMin,latMax,
 colorbarFormat='%1.1f',colorbarOrientation='horizontal',
 nanColor='k'):
 """Plot data on world map."""
 m=Basemap(projection='cyl',llcrnrlon=lonMin,llcrnrlat=latMin,
 urcrnrlon=lonMax,urcrnrlat=latMax,suppress_ticks=False)
 m.aspect=aspect
 palette=cm.jet
 palette.set_bad(nanColor,1.0)
 fig=m.createfigure(figsize=figsize)
 im=m.imshow(mapData,cmap=palette,norm=colors.normalize(vmin=dataMin,
 vmax=dataMax,clip =False))
 cax=fig.colorbar(im,tickfmt=colorbarFormat,
 orientation=colorbarOrientation)
 cax.set_xlabel(colorbarTitle)
 m.fillcontinents()
 m.drawmapboundary()
 gca().set_title(plotTitle)
 fig.savefig(pngFile)
 close(fig)
Any help is greatly appreciated.
Thanks,
Gerald

Hello all,
I've looked through the archives and can't find a solution to this. 
Sorry if it is already there, please point me back in that direction if so!
matplotlib appears to compile and install fine. However when I try to 
import pylab, I get an error:
Python 2.3.4 (#5, Jul 12 2005, 11:42:21)
[GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-24)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> from pylab import *
Traceback (most recent call last):
 File "<stdin>", line 1, in ?
 File "/bmm/scratch/brj03/python/lib/python2.3/site-packages/pylab.py", 
line 1, in ?
 from matplotlib.pylab import *
 File 
"/bmm/scratch/brj03/python/lib/python2.3/site-packages/matplotlib/pylab.py", 
line 198, in ?
 from axes import Axes, PolarAxes
 File 
"/bmm/scratch/brj03/python/lib/python2.3/site-packages/matplotlib/axes.py", 
line 14, in ?
 from axis import XAxis, YAxis
 File 
"/bmm/scratch/brj03/python/lib/python2.3/site-packages/matplotlib/axis.py", 
line 25, in ?
 from font_manager import FontProperties
 File 
"/bmm/scratch/brj03/python/lib/python2.3/site-packages/matplotlib/font_manager.py", 
line 39, in ?
 from matplotlib import ft2font
ImportError: 
/bmm/scratch/brj03/python/lib/python2.3/site-packages/matplotlib/ft2font.so: 
undefined symbol: PyUnicodeUCS2_GetSize
I tried upgrading to the latest version of Python, and get a slightly 
different error - a different symbol can't be found:
Python 2.4.2 (#1, Dec 19 2005, 15:46:55)
[GCC 3.2.2 20030222 (Red Hat Linux 3.2.2-5)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> from pylab import *
Traceback (most recent call last):
 File "<stdin>", line 1, in ?
 File 
"/bmm/scratch/brj03/python-latest/lib/python2.4/site-packages/pylab.py", 
line 1, in ?
 from matplotlib.pylab import *
 File 
"/bmm/scratch/brj03/python-latest/lib/python2.4/site-packages/matplotlib/pylab.py", 
line 198, in ?
 from axes import Axes, PolarAxes
 File 
"/bmm/scratch/brj03/python-latest/lib/python2.4/site-packages/matplotlib/axes.py", 
line 14, in ?
 from axis import XAxis, YAxis
 File 
"/bmm/scratch/brj03/python-latest/lib/python2.4/site-packages/matplotlib/axis.py", 
line 25, in ?
 from font_manager import FontProperties
 File 
"/bmm/scratch/brj03/python-latest/lib/python2.4/site-packages/matplotlib/font_manager.py", 
line 39, in ?
 from matplotlib import ft2font
ImportError: 
/bmm/scratch/brj03/python-latest/lib/python2.4/site-packages/matplotlib/ft2font.so: 
undefined symbol: _ZNSs7replaceEN9__gnu_cxx17__normal_iteratorIPcSsEES2_jc
There seem to be problems with the ft2font.so library. Can anyone help?
Cheers,
Ben.