What was good about cylinders in the previous section is that we gave the graph a 3D look by adding phong to the surface. Print "set palette model RGB function gray, gray, 1" Print "set palette model RGB functions 0.9, 0.9, 0.7+gray/5.0" Print "set palette model RGB functions 0.9, 0.9,0.95" Print "unset xtics unset ytics set ztics out set grid ztics set ticslevel 0" Print "set xrange set yrange set zrange " Print "set parametric set urange set vrange " Print "set sample 100 set isosample 50, 50" We should not let this opportunity pass by. It should go without saying that the task is very repetitive, i.e., it lends itself to scripting. You can also shift the vertical position of the centre of the spot by tampering with the value of vp, somewhere at the beginning. If you find that the white spot (actually, it is not completely white, but some very faint shade of blue, some steel-like colour) is too tight, you can ease up a bit on the Gaussian function. To make the cylinders 3D-looking, we add the phong, as we discussed it here. Each time a new cylinder is processed, we shift it to the right, so that it does not overlap with the previous ones. You can check out the details of this in this sectionįinally, the cylinders are plotted one by one. To make it more interesting, the vertical panes are given some gradient. Section on phonged surfaces: apart from the general set-up commands, we plot the cylinder first to a file, cylinder.dat, (this time, we put on the cap, too), then draw the box in which we plot the bars.
Pm3d gnuplot code#
If you look at it, this code is really nothing more than what we have already seen in the Loading the script in gnuplot would produce the following image
Set palette model RGB function gray, gray, 1 Set palette model RGB functions 0.9, 0.9, 0.7+gray/5.0 # These are the vertical panes, with a gradient along Set palette model RGB functions 0.9, 0.9,0.95 # First, we draw the 'box' around the plotting volume # Basically, this is the definition of our cylinder # These are the actual values to be plotted
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