Return the current estimation method for the UI processing
rxUdfUiEst(value)value of the estimation method being processed or NULL
Other User functions:
linMod(),
rxUdfUiControl(),
rxUdfUiData(),
rxUdfUiIniLhs(),
rxUdfUiMv(),
rxUdfUiNum(),
rxUdfUiParsing()
rxUdfUiEst()
#> NULL