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TOPIC: record only the last time step of the model

record only the last time step of the model 7 years 4 months ago #24578

jonathan	Hello all, My model is running for a month (31 days) with an output of one hour. I want to use this model as a previous computation file, however the result file is really heavy (3 giga) and I would like to record only the last day of the model. Does someone know how to do it please? You can find attached my cas file regards Joanthan Attachments: IrishSea2_...2-13.cas (4KB)
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record only the last time step of the model 7 years 4 months ago #24581

c.coulet OFFLINE Moderator Posts: 3632 Thank you received: 1010	Hi If you read the documentation carefully, you will see it exists some dedicated keywords to define the first time step to store ... Regards
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record only the last time step of the model 7 years 4 months ago #24584

josekdiaz
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Posts: 161
Thank you received: 47

Dear Jonathan,

Additional to the previous answer, you could also "chop" or slice your existent result to a new one using the bundled python scripts.

Launch the opentelemac command prompt (windows) or terminal (linux) and type:

runSELAFIN.py chop -f [ini_frame] -s [end_frame] [Inputfile.slf] [Outputfile.slf]

Please replace the brackets ([ ]) with your data,if your last frame is "100" and your want only your last frame:

runSELAFIN.py chop -f 100 -s 100 results_model.slf last_frame_model.slf

Also you could check the last frame using Bluekenue, using the animate/time toolbar.

Some (aditional) flags for the chop command and its equivalent:
-f: --from
-s: --stop
-d: --step
-r: --replace

Please, make a backup of your SLF file if you decide to use the "-r" option, as it overwrites the input file!

Hope it helps.

Regards,

José D.

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record only the last time step of the model 7 years 1 week ago #26193

jose2kk
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Posts: 161
Thank you received: 59

Dear José D.,

I am trying to chop or slice a results file (basically to record the last frame/time step and get a smaller file), however, I am getting an error (see the image attached) when I try it, I have tried it many times and I always get the same error.

As you said, I launched the command prompt and typed what you indicated with the required changes for my case. I am not sure if I am doing it properly, could you please check if I am?

Cheers,

José

Attachments:

chop.png (141KB)

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record only the last time step of the model 7 years 1 week ago #26197

josekdiaz OFFLINE Expert Boarder Posts: 161 Thank you received: 47	Hello José, Seems like a bug that existed in that realease (6p3r2?). Have you tried using a newer v7.x version? Regards, José D.
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record only the last time step of the model 7 years 1 week ago #26198

jose2kk OFFLINE Expert Boarder Posts: 161 Thank you received: 59	Hi José D., Indeed, it is a bug in that release (v6p3r2), I already tried with v7p2 (as you said) and it works fine. Thanks a lot! Cheers, José
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