lire directement fichier binaire

[maybebis]

Bonjour,

Peut être qu'un de vous l'a déjà fait .

J'ai écrit un tableau de waveform dans un fichier journal à l'aide de [ write waveforms to file .vi] , j'aimerais pouvoir le lire (fichier .dat) directement avec python (par exemple) , savez vous comment est codé le fichier pour pouvoir le lire ?

Merci de votre aide.

Christophe.

[GerdW · Accepted solution]

Hi Christophe,

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@maybebis wrote:

Maybe one of you already did.

I wrote a waveform array to a log file using [write waveforms to file .vi], I would like to be able to read it (.dat file) directly with python (for example), do you know how is encoded the file to be able to read it?

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Simple answer: when you want to define a know file format then you need to define it - and not rely on someone else to do it in a way suitable to you…

You can look into the WriteWaveformToFile function to see how NI does the saving: Basically it is a Datalog file (also available in the Advanced File functions palette), which is know to (probably) change the internal formats with each LabVIEW version.

I recommend to use other (well-defined) file formats, like TDMS. There should be Python libraries available to read TDMS data…

(Btw. you should ask your questions in English in this forum - or use the regional French board…)

[JB]

Hi GerdW,

This is the french LV board. 😀

En te souhaitant une agréable journée. 😂

[maybebis]

Thanks you , all.