September 22, 2013 at 3:43 am #1473
We adopt two ways to calculate CH4 flux. The first way is to process with ghg files(see attachments:complete ghg.metadata,LI-cor samplel.eddypro and 2011-04-05T080000_AIU-0205.ghg) with Eddypro 4.2.0,it works. The second processing method do as following way: first convert ghg files to text files(2011-04-05T080000_AIU-0205.txt) using LI-7×00 File Viewer, then using Eddypro to process the text files,but it doesn’t work(see attachments: complete txt.eddypro and complete txt.metadata).Actually, we want to add several columns of data in ourselves’ ghg files because the H2O density is missing in our ghg files,so we should first convert the ghg into text files, then add the data into text files by programming,and at last using the Eddypro to process these new synthetic text files. Consequently, we need to figure out does eddypro can process the new synthetic text files like ours? Thank you very much!
AlanSeptember 22, 2013 at 3:46 am #1876
Attachments~September 22, 2013 at 3:49 am #1877
attachment1~September 24, 2013 at 9:02 pm #1878
it appears as if you cannot upload the files you would like to. I suggest you send the files to my email address (firstname.lastname@example.org). I will look into the problem you reported in your post and then post here a feedback. I will also look at your other question concerning the diagnostic flags, and let you know what I find.
Thanks a lot,
GerardoDecember 3, 2014 at 12:41 am #2038
I had the same issue, but I managed to fix it myself!December 6, 2014 at 6:21 am #2039
Generally speaking, processing GHG files as text files entails the following steps:
1. Retrieving the data in the “.data” file that is inside the GHG archive. This can be done with the FileViewer, or can be done by unzipping all GHG archives that one wants to process.
2. In EddyPro >> Project Creation Page, declare a Raw file format of “ASCII plain text”.
3. Compile the “.metadata” file in the Metadata File Editor. The easiest way to do this is to load one of the “.metadata” files that were unzipped at step 1. Note that if you do so, you will find that the number of columns in the “Metadata File Editor >> Raw File Description”, is one less than the actual number of columns in the file. This is because in GHG files the first column (“DATA”) of the “.data” file is treated differently than any other column. You shall refrain from adding a new column in the Metadata file Editor. Differently, if you compile the “.metadata” file from scratch, you shall describe all the columns, include the “DATA” column.
4. Proceeed as you would for any normal ASCII plain text file type.
Processing GHG files this way is subject to a few caveats, the most relevant being that you cannot automatically account for time-changing metadata as you could do by processing GHG files directly. You would have to compile a “dynamic metadata file” to be able to do that.
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