I've been working on a Python3 script to read images and then manipulate them with a variety of the tools available, especially matplotlib and company. Particularly `plot_surface()'. So far, I've been coming up with errors that read
when plot_surface() is invoked. The image that causing all the trouble is, according to file(1), height=712, width=711. When read in by my script, "img=Image.open('origimage.tiff')" is succeeding and "print(img)" is telling me that it's:
which seems correct. This object is then being converted to a numpy array with "imgarray = np.array(img)" with "print(imgarray.shape)" returning "(712, 711, 2)". So far so good. Maybe. The array/matrix seems transposed or rotated. Anyway, when I try plotting that it's nothing but "ValueError: shape mismatch:" errors all the way down.

Thinking that there's something amiss in the way I'm passing data off to plot_surface() -- say, assuming that the data 711x712 but somewhere along the plotting process it's being seen as 712x711 (i.e., the transposition problem I mentioned) and causing that "shape mismatch" error to occur -- I made a copy of the image and resized it using The GIMP to be 710x710 in the hope that I could get something to come out of plot_surface() besides error messages (I could correct X/Y axis problems later).

Running "file newimage.tiff" show identical results to "file origimage.tiff" except that the new image has been resized to 710x710. Looks OK. But, when running the script, what I now get is:
and I'm even farther away from getting plot_surface() working than before. (When it rains...)

Any ideas as to why PIL.Image would balk at reading what appears to be a perfectly good TIFF file? Neither Okular or gwenview have any trouble reading either image file.

Hints, tips, even wild theories... all are welcomed.

TIA...

UPDATE: After a nice dinner and some extra time to consider the problem, looking at the output of "od -c" for each TIFF file The beginning of the GIMP-resized file was different enough that it got me to thinking about alternatives to using The GIMP to resize. "convert" works well so long as you use "-resize NxN!" instead of merely using "-resize NxN".

The "square" TIFF file can now be read. So the problem is now back to the "shape mismatch" errors.

Marking this thread as solved.

Thanks for returning to update your progress!