Graphic data extraction

Graphic data extraction

Postby somnonaut » Thu Mar 23, 2017 6:16 am

Does anyone know how to extract datapoints from the data stream that makes up graphic elements. We would like to extract the TcCo2 values and the ETCO2 values from our system, but Natus supposedly says there is no way besides making bitmaps and doing scanning of the graphed values against the range in the graphic box. PFFT c'mon, there must be values the system is using to make the graphs. Why can't it be exported? Grrrr
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Re: Graphic data extraction

Postby linuxgeek » Thu Apr 20, 2017 2:59 am

Extract from the final report or from the sleep software? In any case, your best bet is to get it from the edf. Doesn't natus store in edf?
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Re: Graphic data extraction

Postby somnonaut » Thu Apr 20, 2017 10:37 am

It can export to EDF. Mmm, interesting, very interesting. Do you have another specific EDF reader (sleep system) in mind that will export this from an EDF?
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Re: Graphic data extraction

Postby linuxgeek » Thu Apr 20, 2017 8:03 pm

Have you tried the latest version of edfbrowser? I thought there wasu a summary report per channel somewhere.
Cumbersome, but you can output a channel to a CSV file and then load it up in excel. You might have to downsample the channel first to not make it so wieldy.
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