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Import data from *.ch file

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Davide Masiello
Davide Masiello on 23 Apr 2024
Edited: Austin M. Weber on 11 May 2024
Hello - has anyone ever tried to import gas chromatograph data from files with .ch extension?
  2 Comments
Mathieu NOE
Mathieu NOE on 23 Apr 2024
Edited: Mathieu NOE on 30 Apr 2024
I am not really in that business but just in case it would help :
Austin M. Weber
Austin M. Weber on 11 May 2024
Edited: Austin M. Weber on 11 May 2024
I downloaded the chemstation_130.ch file from the chromConverter repository and it looks like it's possible to extract the data using fread:
file_name = 'chemstation_130.ch';
fid = fopen(file_name);
data = fread(fid);
fclose(fid)
figure
area(data,'EdgeColor','none')
xlim([0 500])
However, while it appears to be a GC spectrum, this method doesn't provide any metadata so I can't be sure what the units are. @Davide Masiello, you might try opening your own files using fread to see if the data match what you would expect.

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