On Wed, Sep 15, 2010 at 11:31 AM, Benjamin Root <ben.r...@ou.edu> wrote:

> But, what would the "to_grayscale" method produce?  And what about other
> possible transformations?  Should we add other functions as well to invert,
> brighten, darken, etc?
>
> Maybe another approach would be to have the Colormap class have an attribute
> function called "transform" that would, by default, be just a function that
> returns the input rgba array.  Then, one could assign different
> transformation functions that would be used in the __call__ function of the
> colormap?

to_grayscale would return a colormap instance.  If the colormap also
had a "darken" or "invert" (if people think this is useful), they
could also be colormap methods.  Then you could chain

imshow(..., cmap=cm.jet.to_grayscale().darken())

KDJ

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