Hello,

I try to do fill_between two arrays, that have missing value (masked arrays). Following code shows behaviour that seems not correct. Images what I expect the result to be (by omitting the missing value) and what I get by plotting the whole arrays.

import pylab

import numpy as np

edatmax=np.array([10,4,6,9,np.nan,9,10])

edatmax=np.ma.masked_array(edatmax,np.isnan(edatmax))

edatmin=np.array([8,4,5,1,np.nan,8,5])

edatmin=np.ma.masked_array(edatmin,np.isnan(edatmin))

xtelg=np.arange(edatmax.size)

xtelg=np.ma.masked_array(xtelg,np.isnan(edatmin))

pylab.plot(edatmax,"gx")

pylab.plot(edatmin,"r+")

# comment out to see better

pylab.fill_between(xtelg,edatmax,edatmin,facecolor='green',alpha='0.3')

# comment in to see better

#pylab.fill_between(xtelg[:4],edatmax[:4],edatmin[:4],facecolor='green',alpha='0.3')

#pylab.fill_between(xtelg[5:],edatmax[5:],edatmin[5:],facecolor='green',alpha='0.3')

pylab.show()

Version of matplotlib is current cvs.

Best regards,

Andres