Converting MCIDAS to PDF results in empty file

[OskarPersson]

What did you do?

Converted MCIDAS .ara-file to PDF

What did you expect to happen?

A PDF would be created with content similar to the source

What actually happened?

An empty PDF was created

What versions of Pillow and Python are you using?

Pillow 5.2.0 and Python 2.7.15

The tested file

ara = Image.open("Tests/images/cmx3g8_wv_1998.260_0745_mcidas.ara")
rgb_ara = ara.convert('RGB')
rgb_ara.save('output.pdf')

[radarhere]

If I run your code, the PDF is a white image 1,800 by 400.

However, this is also what I get if I show the image instead -

from PIL import Image
ara = Image.open("cmx3g8_wv_1998.260_0745_mcidas.ara")
ara.show()

I presume that you think the image is not just a while rectangle? What program are you using to view the original file?

[OskarPersson]

I viewed it by converting it to a PNG and then opening the resulting file in Apple's Preview app

from PIL import Image
ara = Image.open("cmx3g8_wv_1998.260_0745_mcidas.ara")
ara.save("output.png")

[radarhere]

I think this is related to #3159

[radarhere]

I've created PR #3838 to resolve this.

[radarhere]

Resolved by #3838

[radarhere]

It turns out that this situation is more complicated. See #3838 (comment)

[radarhere]

Closing, as part of #3159