pic as plot mark 11
pgfplots
JeT JeT
11 This is an answer that literally uses `pic`s as plot marks. The `pic` has various options which I hope are somewhat selfexplanatory. Please note that generally you will be better off if you dial a rather recent compatibility mode of `pgfplots`. I chose `\pgfplotsset{compat=1.17}` and there is no guarantee that the following works with ancient versions. To make a `pic` a plot mark, one can use something of the sort
user 3.14159
How to draw this torus with pgfplots? 6
pgfplots
Anonymous 1123 Anonymous 1123
8 There are many possibilities. One of them is `pgfplots`. A possible parametrization of tori is stored in [`3dtools`](https://github.com/marmotghost/tikz-3dtools), which we just load and use here.
user 3.14159
How to draw this graph? 4
pgfplots
Anonymous 1123 Anonymous 1123
10 In general, `pgfplots` is a great tool for 3d plots. This is certainly the case if you plot a single surface, as in this example. If you have multiple intersecting plots, then you may have to work harder (but according to how I read the manual, the future may bring some tools that do such things automatically). To produces this plot, all we need to do is to use polar coordinates and a simple trick for the vertical wall: cut of the radius function via `rr(\x)=min(\x,1);`. Notice also that the axes are autmomatically almost right, but this is because they happen to be so in this example, so we only have to fix a stretch of the z-axis. In general, pgfplots does not compute the intersections of the axes with the surfaces, so we do have to do that ourselves. Note also that this plot does not really highlight some of the very nice features of `pgfplots` such as colorful shading with interpolated colors.
user 3.14159
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