How can I eliminate "PDE Toolbox Error! Too many input arguments"?

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Allen 2018-2-19

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https://ww2.mathworks.cn/matlabcentral/answers/383573-how-can-i-eliminate-pde-toolbox-error-too-many-input-arguments

评论： Suraj Mankulangara 2018-2-22

I am modeling diffusion in 2D with circles and rectangles and this error pops up commonly, even (but not always) when I just change the diffusion coefficient between runs. My workflow is

Options...Application...Diffusion
Draw a circle or circles of the proper size
Set boundary conditions (accept defaults)
PDE...PDE Specification...input D and Q
Mesh...Initialize Mesh...Refine (typically twice)
Solve...Parameters...set 10 or so time steps
Solve PDE

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Answer 1

Suraj Mankulangara 2018-2-22

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Hello Allen

This issue most likely occurs because there are one or more functions in your current folder or the userpath (default user work folder) which have the same name as built-in functions of toolboxes.

To work around this issue, rename or remove the conflicting MATLAB file . To find which MATLAB files have the same name as a MATLAB function in a toolbox, go to:

http://www.mathworks.com/help/index.html

And search for function names to find which of your MATLAB files have the same name as a MATLAB function.