Matlab does not recognize "plotfunc2d" or "plotfunc3d"

Question

Matus Cvengros 2013-4-13

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https://ww2.mathworks.cn/matlabcentral/answers/71888-matlab-does-not-recognize-plotfunc2d-or-plotfunc3d

Recently I was browsing the documentation since I needed to do some more complex plots and I discovered the functions "plotfunc2d" and "plotfunc3d". They seem like a really powerful tool, however I simply can't get them to work.

I was trying to plot the examples provided by the documentation, however Matlab simply does not know those functions. Example I tried to print is

plotfunc2d(sin(x), x = 0..2*PI),with error

                      |
Error: The expression to the left of the equals sign is not a valid target for an assignment.

If I try to plot without the x interval, function is simply undefined.

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Answer 1

Walter Roberson 2013-4-13

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https://ww2.mathworks.cn/matlabcentral/answers/71888-matlab-does-not-recognize-plotfunc2d-or-plotfunc3d#answer_82117

Those are part of the MuPAD language inside the symbolic toolbox. For example http://www.mathworks.com/help/symbolic/mupad_ref/plotfunc2d.html

You can open a MuPAD notebook and do the plotting inside that.

Most MuPAD routines can be reached from MATLAB through feval(), but I have no information about what would happen to graphics invoked in this manner.

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Matus Cvengros 2013-4-13

Thanks! I didn't even know that MuPAD exists and I am using Matlab for about 2 years right now.

I am facing another problem right now. After using function "plotfunc3d" in MuPAD, both Matlab and MuPAD crashes. Using "plotfunc2d" is fine. Oh, I am using Ubuntu 12.10.

However, thanks anyway!

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