saving a TIFF

[fernando sedano]

I'm trying to save an image created from two arrays (I'm using numpy and
PIL):


n=(b4a-b3a)/(b4a+b3a);
ndvi = Image.fromarray(n)
ndvi.save("F:\Fire_scar_mapping\ILS3\ndvi_test","TIFF")

...........but I get the following error message:

IOError: [Errno 22] invalid mode ('wb') or filename:
'F:\\Fire_scar_mapping\\ILS3\ndt'

Could anybody tell me what I'm doing wrong?
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