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Function surf3 is one of most suitable (for my opinion) functions to visualize 3D data. It draw the isosurface(s) – surface(s) of constant amplitude (3D analogue of contour lines). You can draw wired isosurfaces if specify ‘#’ style. The sample code is:
int sample(mglGraph *gr) { mglData c; mgls_prepare3d(&c); gr->Light(true); gr->Alpha(true); gr->SubPlot(2,2,0); gr->Title("Surf3 plot (default)"); gr->Rotate(50,60); gr->Box(); gr->Surf3(c); gr->SubPlot(2,2,1); gr->Title("'\\#' style"); gr->Rotate(50,60); gr->Box(); gr->Surf3(c,"#"); gr->SubPlot(2,2,2); gr->Title("'.' style"); gr->Rotate(50,60); gr->Box(); gr->Surf3(c,"."); return 0; }