8.13 3D plotting (Pure C)

These functions perform plotting of 3D data. 3D means that data depend from 3 independent parameters like matrix f(x_i,y_j,z_k), i=1...n, j=1...m, k=1...l. There are 4 generally different types of data representations: isosurface or surface of constant value (Surf3), density plot at slices (Dens3), contour lines plot at slices (Cont3), solid contours plot at slices (ContF3) and cloud-like plot (Cloud). Surf3, Cont3 and ContF3 functions have variants for automatic and manual selection of level values for surfaces/contours. Also there are functions for plotting data grid lines according to the data format (Grid3) for enhancing density or contour plots. Each type of plotting has similar interface. There are 2 kind of versions which handle the arrays of data and coordinates or only single data array. Parameters of color scheme are specified by the string argument. See section Color scheme.