Measuring linearity error using LabVIEW

[Valentino Rossi]

I am aquiring linear data (voltage Signal) with respect to time, from a 0-5V sensor using PXI-6251 DAQ card. Is there a Built in VI node in LabVIEW to measure the Linearity error? I came across nodes for fitting regression lines, but not linearity error. How do I do it?

[RavensFan]

Which linear regression VI are you trying to use?  The Linear Fit VI under Mathematics/Fitting has an output called reside which should be the measure of linearity, i.e. how well the data fits the linear regression line.

[Valentino Rossi]

Thats great, but will the error value correspond to integral or dynamic nonlinearity? Will it be in % ?