Linear Fit errors

[J.Mamakos]

I am trying to make use of the "Linear Fit" and "Linear Fit Coefficients" vi's, but I am getting errors despite inputting what I thought was correct. If I connect my two 1D data arrays to the 'X' and 'Y' input terminals then I get the error -20002.  If I connect empty arrays, I get the error -20006.  I'm leaving all the other inputs unconnected.

In looking for a solution to this, I came across something altenbach said a few years ago:

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@altenbach wrote:

Some possible errors that can occur with linear fit (but they would generated different error codes):

1. You have only a two-column file. In this case you need columns 0 and 1 (column 2 does not exists) error -20002
2. You have only one row, thus only one data point. error -20006.

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I only half-understand what he meant, and/or how it would apply to what I'm doing wrong.  Can anyone help me out here?

[crossrulz · Accepted solution]

Please attach code.

-20002 states that the input sequences must be the same size.  So X and Y need to be the same length.  Verify this first.

-20006 states that the input lengths must be at least 2 elements.  So passing in empty arrays makes perfect sense here.

[J.Mamakos]

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@crossrulz wrote:

-20002 states that the input sequences must be the same size.  So X and Y need to be the same length.  Verify this first. 

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One of my arrays was an element short (I was taking the arrays from different ends of a For loop).  Thanks for showing me where to look!

[crossrulz]

Most of the time, a simple error lookup will tell you exactly where you went wrong.

[J.Mamakos]

I didn't know you could do that (aside from looking on the internet).  I've found the "Explain Error" option now that I look for it.  Thanks again!