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## matplotlib-devel

 [matplotlib-devel] note: problem with in pcolor From: rod holland - 2004-05-11 21:05:06 ```[The following problem seems to occur with Numeric but not with numarray] The following code ====================== from matplotlib.matlab import * x = arange(0,20,.2) y = arange(0,20,.2) X, Y = meshgrid(x,y) z=zeros((len(x),len(y)),'f') for i in enumerate(x): for j in enumerate(y): z[i[0]][j[0]]=10*sin(i[1]*j[1]) #or z[i[0],j[0]]=10*sin(i[1]*j[1]) pcolor(X,Y, transpose(z),shading='faceted') show() ======================= breaks in the module color.py ============================= def get_color(self, val, valmin, valmax): # map val to a range from 0 to 1 if iterable(val): s = "val must be a scalar. Perhaps you meant to call get_colors?" #print val,type(val) raise ValueError, s #print valmin, valmax #print val,type(val) ind = self.indmax*(val-valmin)/(valmax-valmin) return self.rgbs[self._bound_ind(ind)] ============================== because the test for iterable fails since the element C[i,j] is type . One solution is to change the code section around line 1126 in axes.py from c = C[i,j] to the following. ===================== for i in range(Nx-1): for j in range(Ny-1): c = C[i][j] ======================= the form C[i][j] seems to always return float. ```