r - Plotting surfaces with contour map in 3D over triangles

By A Mystery Man Writer

The example code here for rgl does almost what I want. However my (x,y) are not in a rectangle but in a triangle that is half of the rectangle (x=0..1, y=0..1 and z is missing if x+y>1). My input

Make beautiful 3D plots in R — An Enhancement to the Storytelling, by Xichu Zhang

ggplot2 - how to plot three dimension data or four dimension data to filled contour plot or surface plot in R - Stack Overflow

Groundwater flow diagram and contour map of piezometric surface (m, msl)

Heatmaps and different color maps for surface plot : r/geogebra

LONE MOUNTAIN CHARACTERIZED USING THE ® 3D MATLAB INTERP2 COMMAND AND

How to Add a permanent contour line to a surface plot in R plotly - GeeksforGeeks

Contour plot under mesh surface plot - MATLAB meshc

Create Maps and Visualize Data in 2D and 3D • rayshader

Plot 3-D surface - MATLAB fsurf

ggplot2 - how to plot three dimension data or four dimension data to filled contour plot or surface plot in R - Stack Overflow

Transform ggplot2 objects into 3D — plot_gg • rayshader

Help Online - Origin Help - Creating Contour Graphs