Dear matplotlibers, I encountered a bug (?) in fill_between when using logarithmic scales and the last part of y and yerr arrays as set to zero: a diagonal stripe going from the rightmost non zero value to the first value is drawn. It's visible in the right panel of the attached figure, while is not present if the plot is linear (left panel). If xaxis is log and yaxis is linear the plot is correctly drawn.
I'm using mpl.__version__ = '1.1.1rc' under Kubuntu 12.04 with Python 2.7.3 The plot has been created with the script below. Is this a bug or am I missing something? Cheers Francesco ##### error_fill_between.py ###### import matplotlib.pyplot as plt import numpy as np #values to plot x = np.linspace( 1, 10, num=100 ) y = np.exp( -x**2 ) y[50:] = 0 yerr = y* np.random.rand(100) #figure fig = plt.figure() ax1 = fig.add_subplot(121) #first axes: linear ax1.errorbar( x,y,yerr, c='r' ) ax1.fill_between( x,y-yerr,y+yerr, color='b', alpha=0.4 ) ax2 = fig.add_subplot(122) #second axes: logarithmic ax2.errorbar( x,y,yerr, c='r' ) ax2.fill_between( x,y-yerr,y+yerr, color='b', alpha=0.4 ) ax2.set_xscale( "log" ) ax2.set_yscale( "log" ) plt.show() ###### end script #########
error_fill_between.pdf
Description: Adobe PDF document
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