Matlab- input arguments of type 'double' ?

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SUMMARY

The discussion centers on an issue encountered in MATLAB when executing the command [z,r]=ode45(@rad03,[0,10],0). The user received an error message indicating that the function 'rad03' is undefined for input arguments of type 'double'. This error typically arises when the MATLAB environment cannot locate the function file 'rad03.m'. The solution involves ensuring that the current working directory is set correctly to the location of the 'rad03.m' file.

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This discussion is beneficial for MATLAB users, particularly those working with numerical methods and solving ordinary differential equations (ODEs), as well as anyone troubleshooting function-related errors in MATLAB.

birdhen
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Matlab- input arguments of type 'double' ?

Hi there, I was wondering if anyone could help me.

Yesterday I wrote the command [z,r]=ode45(@rad03,[0,10],0); and it worked but today I am writing exactly the same thing but keep getting the message:

?Error using ==>feval
Undefined function or method 'rad03' for input arguments of type 'double'.

Error in ==>funfun/private/odearguments at 110


and some more error messages. Why would it work yesterday and not today? Does anyone know what I am doing wrong?

Any help would be much appreciated!
Thanks
 
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The error message means that Matlab can not find the file rad03.m (assuming the function rad03 is located in a file with the same name).

Could it be that you are not in the right directory?
 


yes it could, thanks!
 

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