write data from waveform chart to excel

[mlop]

Hi,

I am trying to create a button that save de real time values recieved in a waveform chart. I don't know how to save it alls, because I don't know if is needed a buffer to save all or how can I do it.

It wil be faboulous if someone give me ideas!

Thanks so much for your support!

[avinash123]

There is a VI called Write to Measurement File. You can find it in express VI -> Output.

There is another way you can do this. Convert the graphed data using "Number to Fractional string" VI (You can search for this) and wire the output to "Write to Spreadsheet" VI.

Hope it helps 🙂

[NitzZ · Accepted solution]

Hi mlop,

You can go through the attached VI. You will get some idea of how to do it..

Regards,

Nitzz

(Give Kudos to good Answers and Mark it as a Solutoin if your problem is Solved) 

[mz-nap]

hi

i saw ur answer , it's too complete but i want to save data from graph that i can't connect to ur projects?

my project is attached and i connect with ethernet

what should i do???

[smercurio_fc]

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@mz-nap wrote:

hi

i saw ur answer , it's too complete but i want to save data from graph that i can't connect to ur projects?

my project is attached and i connect with ethernet

what should i do???

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Please do not create posts in multiple places. Keep the discussion in one place. You already created your own thread: http://forums.ni.com/t5/LabVIEW/save-data-from-graph/td-p/2007035 . Do not hijack someone else's.

[Ben121]

NiltzZ, in the file you attached, there is write to spreadsheet with format (%3f) i.e., it will save the data upto 3rd place of decimal. Can you suggest some way to save the data as it is. Can we save the complete size of the numbers upto whatever place of decimal we are getting?

[cbutcher]

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@Ben121 wrote:

NiltzZ, in the file you attached, there is write to spreadsheet with format (%3f) i.e., it will save the data upto 3rd place of decimal. Can you suggest some way to save the data as it is. Can we save the complete size of the numbers upto whatever place of decimal we are getting?

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You can in general specify longer format specifiers when using Write to Spreadsheet (or similar nodes).

You'll have to pick some value though.

For double precision numbers, 15-17 significant figures is enough - see https://en.wikipedia.org/wiki/Double-precision_floating-point_format

For smaller precisions, fewer significant figures are required.

It may be that based on your source, you have far fewer above your noise floor.