Linear adjustment settings

Hello everyone

I use linear Fit.vi to calculate the slope. Are there guidelines to make the right choice for the 'weight', 'tolerance' and 'method' taking into account the nature of the data?

Thank you.

Dan07.

Don't wire the weight unless you have additional information on the data. For example, if you know the standard deviation of each point because it is derived from several measures, or if there is a known between the x and the noise in the data relationship. For example, if some points have a bigger mistake, you could downweight them accordingly. (how common is weight = 1/variance, see also).

The method is not a simple U16 but an enum, to get a correctly typed entry simply with the right button of the Terminal and "create a control" or "create constant.

Tolerance is used only for the iterative methods (less absolute residual, bisquare). They are most useful if you have some outliers in the data. Try a few values a few orders of magnitude and see how results vary.

Regular, use only the wire the x and y bays and leave all the rest to the default value.

Tags: NI Software

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