Unrecognized function or variable 'dudx'.

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Amir Hossein Ghezelbash
评论： Jon 2022-3-10
Hello everyone.
I used to work with built-in function 'dudx' a couple of times, but yesterday when i started to work with it again ,i get an error for no reason and the error is : Unrecognized function or variable 'dudx'.
i tryed to clear all variables ,literally everything from workspace,functions and my files . but still it's not working.
thanks for any help :)
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Torsten
Torsten 2022-3-10
Yes, but I think it's only a variable name, not a function.
Jon
Jon 2022-3-10
Yes it is just a local variable name in their example, not a function.

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Jon
Jon 2022-3-10
As far as I can tell, unless it is in a toolbox that I don't have there is no built in MATLAB function called dudx.
If you think you have a function that you or someone in your group has written with this name then you need to find out where the m file dudx.m is stored on your harddrive and use MATLAB's path function to set the path to that folder (or run in that folder).
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Amir Hossein Ghezelbash
Amir Hossein Ghezelbash 2022-3-10
Hello and thanks for your responce...
if You check on 'pdepe' documantation( MATLAB help) you will see 'dudx' as an input.
And i aslo checked 'dudx' in help of MATLAB and yes its a function you can call it with two input arguments
dudx(x1,x2)...
But IDK why it's not working for me

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