I am guessing that $x_ref and $y_ref are array references and you are looking at the length of the string that represents the reference, eg ARRAY(0x132a5fd). Perhaps you need to look at scalar @$x_ref and scalar @$y_ref to compare the number of elements.

Just a guess.

Cheers,

JohnGG

Update: Corrected rubber-fingered typo.

In reply to Re: Correlation using Statistics::LineFit by johngg
in thread Correlation using Statistics::LineFit -- DISREGARD POST by Win

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