This function adds contour lines proportional to the p-value of a multidimensional smooth effects. It is useful for checking where (across covariates x1 and x2) the fitted smooth is significantly different from zero.
l_pvContour(pTrans = identity, ...)
| pTrans | a transformation to be applied to the p-values before plotting. |
|---|---|
| ... | graphical arguments to be passed to |
An object of class gamLayer.
See plotDiff.mgcv.smooth.2D and plotDiff.sos.smooth for examples.