Model functions

out() function

out(n) establishes a binary variable which is 1 if data relates to observation i, (trait 1), else is 0.

out(n,t) establishes a binary variable which is 1 if data relates to observation i, (trait $t$), else is 0.

The intention is that this be used to test/remove single observations for example to remove the influence of an outlier or influential point. Possible outliers will be evident in the plot of residuals versus fitted values (see the .res file) and the appropriate record numbers for the out() term are reported in the .res file.

Note that i relates to the data analysed and will not be the same as the record number obtained by counting data lines in the data file if there were missing observations in the data and they have not been estimated. (To drop records based on the record number in the data file, use the !D transformation in association with the !=V0 transformation.)

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