Is this warning jutified ?

[kif]

Hi @vasole,

What is your opinion about this warning ?

In [1]: import fabio

In [2]: fabio.open("LR_flatfield_Segde_KPSS_pos1_2515eV_ai0.8deg_5s_wa30.0deg_camserverenergy2450threshold1600eV_id308719_000000_WAXS.tif")
WARNING:fabio.TiffIO:Data at tag id '65000' is smaller than expected
Out[2]: <fabio.tifimage.TifImage at 0x7f841d366590>

data.zip

This comes down to this place: https://github.com/silx-kit/fabio/blob/main/src/fabio/TiffIO.py#L277 where there are only 4 bytes in a struct supposed to hold a double (8 bytes).

[vasole]

Well, the warning has all the reason of being there.

What we can do is to reduce from WARNING to INFO for user TAGs (whose TAG ID is above 65000).

[gfreychet]

@vasole Thank you for the answer. I asked @kif if he know why the warning was there. We have two detectors at the Soft Matter Beamline (NSLS-II) and both Dectris detector give this warning. Do you mind to tell me what the TAG ID above 65000 means?

[vasole]

Do you mind to tell me what the TAG ID above 65000 means?

It means that those are TAGs the writer of the file can use for anything. The information contained in them is not needed to read the image data. For instance, DECTRIS can use those TAGs to add DECTRIS specific information relative to the detector, the acquisition parameters ...

[gfreychet]

@vasole Thank you for the answer. If the info contained in the TAG is not critical to read the image data, I would appreciate if you can pass the WARNING to INFO.

[kif]

Well, if your images are actually malformed and you do not care, why don't you silence-out this specific logger ?

In [1]: import fabio

In [2]: fabio.open("LR_flatfield_Segde_KPSS_pos1_2515eV_ai0.8deg_5s_wa30.0deg_camserverenergy2450threshold1600eV_id308719_0000
   ...: 00_WAXS.tif")
WARNING:fabio.TiffIO:Data at tag id '65000' is smaller than expected
Out[2]: <fabio.tifimage.TifImage at 0x7fdfe809d4d0>

In [3]: import logging;fabio.TiffIO.logger.setLevel(logging.ERROR)

In [4]: fabio.open("LR_flatfield_Segde_KPSS_pos1_2515eV_ai0.8deg_5s_wa30.0deg_camserverenergy2450threshold1600eV_id308719_0000
   ...: 00_WAXS.tif")
Out[4]: <fabio.tifimage.TifImage at 0x7fdf576b0390>

It is the input 3 which does the job.

[gfreychet]

@kif Thank you for the proposition. This works fine for now. I will investigate the TAG of my data to see if I pick what is triggering the warning and will use the silencing of the warning for now.

[kif]

OK, I'll close the issue for now. Feel free to re-open it if you find something relevant.