Confidence bands for 2D contours

[rpomponio]

Is it possible to produce a 2D contour map of a 3D surface with additional contours representing the error in estimation? For an example in base R, see below, which uses the predict.gam() function in package mgcv...

[mfasiolo]

Hi, actually that's something that is currently missing in mgcViz. The difficulty is that (as far as I know) there is no easy way of labeling the level curves in ggplot2 (see #4 ). So that the resulting contour plot would have black, green and red curves with no labels, which would be quite hard to interpret.

Maybe you could have a look at the plotRGL function on mgcViz, which plots the 2D effect in 3D, with confidence surfaces.

[rpomponio]

Thanks! Yes I can understand the difficulty. For now, I am generating the figures with base R, but if this becomes available in the future I'd gladly upgrade to mgcViz.