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ywangd avatar ywangd commented on July 21, 2024

That is actually an excellent question and I haven't thought about it. In fact, most of the test data are taken from ecmwf's BUFRDC and a few of them from ecCodes. I just grabbed them without thinking too much. Those two software uses Apache License.

However I am not sure if this License can be extended to the data. Because as far as I can tell, the data files are real data taken from daily operation (most of them also generated by ecmwf). So it seems to me that the original license of these data should apply instead of the Apache License. I don't know what is the original license and some of them could be public as requested by WMO.

This is a tricky question and I am afraid that I can neither confirm nor deny your request. :)

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hugovk avatar hugovk commented on July 21, 2024

Thanks, at least knowing the source helps :)

Do you know somewhere that has free-to-use BUFR files (and/or GRIB files)?

Alternatively, perhaps I could use pybufrkit to generate a dummy file :) What sort of JSON do you recommend to create a small, simple file using, say, pybufrkit encode JSON_FILE BUFR_FILE? I only really need the most basic file with the header.

Thanks again!

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ywangd avatar ywangd commented on July 21, 2024

Not sure where you can find free BUFR/GRIB files. Of course you could just use pybufrkit to generate BUFR files. In fact I created one such file this way https://github.com/ywangd/pybufrkit/blob/master/tests/data/contrived.bufr
You can use this file freely.

It could be quite error prone trying to prepare a JSON file for encoding by hand. I would recommend that you start from the output of pybufrkit decode -j SOME_BUFR_FILE. Then edit the output JSON to you need.

Here is another free one that I modified from an upper air observation data.

[["BUFR",0,4],[0,0,9,0,0,false,"0000000",2,4,0,18,0,2017,1,1,0,0,5],[0,"00000000",1,true,false,"000000",[309052]],[0,"00000000",[[15,325,"SOME STATION",80,4,8,7,18,2017,1,1,0,0,5,25.3241,28.015,598,599,599,null,null,null,null,null,null,null,null,null,2,0,65536,100000,90,0,-1e-05,null,null,null,null,0,145472,94360,599,0,-1e-05,298.05,282.01,137,8.2,0]]],["7777"]]

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hugovk avatar hugovk commented on July 21, 2024

Thank you!

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