Linear Fit did not work - LABVIEW 2020

[lukaszc331]

Hello,

I need to do a simple program to read data from txt file and prompt it on graph with Linear Fit function ( y = ax + b), but in output of this function I don't have any data. On the XY graph there is only measurement points. I don't have any idea now how to deal with it.

[altenbach]

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@lukaszc331 wrote:

I don't have any idea now how to deal with it.

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As a first step attach your VI and datafile. We cannot debug pictures. What is the error code of "linear fit"?

[lukaszc331]

I attached my files now. 

[altenbach]

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@lukaszc331 wrote:

I attached my files now. 

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Thanks.

[altenbach · Accepted solution]

Error was -20002, i.e. the x and y arrays have different size. Try this instead:

(I had to tweak the format to use comma as decimal delimiter)

On a side note, ALWAYS wire an indicator to the error out. Sometimes it wants to tell you something.

(Also, please don't maximize front panel and diagram to the screen. Very annoying!)

[lukaszc331]

Thank you very much 🙂