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21

Hello,
thanks for the new SNAP version, has been running great since.
Now I just got some PACE OCI data and I have an issue with pconvert not writing RGB images from L2 data. The PNG export works in the GUI with both OCI L1B and L2. pconvert can also handle L1B data, but not OCI L2 AOP products. When running pconvert on L2 data with -d this appears:

reading file /feederdata2/TwelveTB05/PACE/2024/PACE_OCI.20240813T150717.L2.OC_AOP.V2_0.NRT.nc
snap-debug: # Unrecognized scene title =[:title = “OCI Level-2 Data AOP”]: /data/PACE/2024/08/PACE_OCI.20240813T150717.L2.OC_AOP.V2_0.NRT.nc
snap-debug: # Unrecognized instrument =[:instrument = “OCI”]: /data/PACE/2024/08/PACE_OCI.20240813T150717.L2.OC_AOP.V2_0.NRT.nc

I thought pconvert is also used by the GUI in the background. Doesnt seem to be the case here.

thanks, Daniel

22

Hi Diana,

I was hesitating if I should open a new topic or place my question here; probably easier would be to start here as the problem relates to SNAP11. I am pretty sure I have not seen this before, in previous releases.

When browsing data (I tried L3bin NASA files for MODISA, VIIRS SNPP and NOAA), I tried to adjust colours in “Colour Manipulation” tool. There is a button there “Apply to other bands” which allows … well, allows what it says: adjusting colour scales, patterns etc for multiple products. Normally you can select some products to match or all of them. In SNAP11 this function seems not working: after clicking to that icon, nothing pops up - no way to propagate colour options to selected products. I would blame myself for doing something wrong but I asked a colleague having an independent installation - he sees the same.

I would kindly ask to investigate this problem - it may seem not critical, but it is always pity to lose a useful functionalty you get used to.

Thank you.
Cheers,
Andrei

1 Like
23

Hello Andrei,

Please describe the bug you found in a way that can be replicated, and our developers will take a look.

Thanks,

Marcus

https://forum.step.esa.int/faq#readFirst

24

Hi Marcus,
bug_1
It is easier to show than describe with words.

  1. Open any relevant file, let it be Ocean Colour Remote Sensing product, for any sensor.
  2. Open images for any two products there, say, Rrs_443 and Rrs_555
  3. In Colour Manipulation window select colour palette for the first band
  4. Try to propagate colour settings to the other band, clicking to “Apply to other bands” icon, outlined with red on the presented image.

And in my test case the last action did not work: no pop-up window appears. This effectively means you cannot apply the same colour settings (palette, scales etc) to two and more products.

Thank you.
Cheers,
Andrei

25

Dear Andrei, not sure if this solves your problem, but you have select No in the subsequent dialogue to get exactly the same value distribution as in the source product.

26

Hi, the problem is that there is NO subsequent dialogue there! I know it should be and it was in previous SNAP releases. But here, after clicking “Apply to other band” NOTHING HAPPENS: neither band selection window, nor farther dialogue. Impression is that pop-up window appears somewhere outside the screen, not seen. Just for confirmation - this was a standard Ubuntu Linux installation, with default options. Reproduced by other colleagues on similar platforms

Thank you.
Cheers,
Andrei

27

I see. Works in SNAP 11 on my side, any special operating system?

28

Standard installation on a Ubuntu Linux workstation:
Linux pmpc1862 5.15.0-122-generic #132~20.04.1-Ubuntu SMP Fri Aug 30 15:50:07 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

Also tried to run from a different Linux machine (Fedora-29):
Linux gridnode110 5.1.6-200.fc29.x86_64 #1 SMP Mon Jun 3 17:20:05 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

with the same result. I think if you could test it on a Linux machine, this may show a difference

29

A specific satellite product where the bug manifests needs to be identified. “Any” is not good enough here.

30

JIRA ticket SNAP-3914 created

31

Jira ticket SNAP-3915 created.

32

Hi Diana,

A small addition to the ticket: The button “Apply to other bands” is not completely unusable: if you open just one band and try to press that button, the response is proper, expected: “No other band available” - as it should be. But after you open another band and try to propagate selected settings - nothing happens, no response, no error message

33

Can you identify a satellite product where the issue manifests?

34

Maybe I was not exactly clear, but when I said “Any” - I actually meant this. I can add: any Ocean Colour product as I did not try to open any others. Right now I have opened in my SNAP browser AQUAA_MODIS.20221013T215001.L2.OC.nc from NASA site: https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-2/Aqua-MODIS/2022/13-Oct-2022/ Unfortunately, I cannot say for sure which version was last not having this problem: snap10 or snap9 as I have overwritten the old versions with the new one. And bands opened were: Rrs_443 and Rrs_412

1 Like
35

Another update on the problem: tried SNAP11 on WINDOWS - this feature fails again, exactly same way. Then we tried MacOS, SNAP10 - works perfectly. I believe regardless operational system, SNAP11 has a bug described above. Out of curiosity tried an old SeaDAS, probably 8.4 - this feature also works perfectly.
In all recent cases tried MODIS Aqua Level2 files, though as I said before - absolutely any product for any bands I tested, more than 10. I observed the same bug

36

Dear Andrei,
Thank you for all your tests. We were able to replicate the error as well.

1 Like
37

SNAP-3896 - Issue fixed for the next major release.