It's been a while, please allow me to bump this... > Sorry. I use matplotlib to create PNGs graphics for display on a > web-page. I want to make the plots zoom-able. I'll use javascript to > capture the pixel positions of the user's selected zoom region on the > PNG plot. I'll then translate this into the coordinate system on the > plot and redraw it with a new x, y range. I'm having trouble > translating the initial axises into the pixel positions (essentially > where they are on the PNG image). > > For example, I use the following code to map point positions from the > coordinate system to pixel positions. I use an img map <MAP> to > provide interaction with the actual lines. > > [CODE] > > lineObj = plt.plot(Xs,Ys,marker='o')[0] > path, affine = lineObj._transformed_path.get_transformed_points_and_affine() > path = affine.transform_path(path) > for real,pixel in zip(lineObj.get_xydata(),path.vertices): > ## write <AREA> tag for each point > > [/CODE] > > I'd like to get information similar to this for the axis of the plot. > > Thanks. >
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