The plot3D package allows us to construct 3D contours and also slice them. In the current recipe, I have explained the implementation of 3D contours in R. The manual to the package discusses many different examples.
The implementation of contour 3D is very similar to the histogram discussed in the previous recipe. We will first install and load the plot3D package in R using the following lines of code:
install.packages("plot3D")
library(plot3D)We will now create a layout for our image. We will generate four different contour plots on the same window. The layout() function allows us to divide our plotting window into four sections:
par(mar=c(2,1,2,1)) l = layout(matrix(c(1,2,3,4),2,2,byrow = TRUE))
Next, we generate our dataset for the x and y values and write a function for the z value. The procedure is very similar to the recipe A simple 3D histogram discussed in this chapter...