Why am I getting undefined variable error?
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Whenever I try to run my function, I keep getting "Undefined function or variable 'k'." error.
Undefined function or variable 'k'.
Error in @(x)-(k.^2)*cos(2.*pi.*k.*x./L)
However, k is one of the inputs to my function
[eN,uN] = femet(A1,k,L,u0,uL,N,dom,f,plott)
In the above line, "f" is a funcion handle, that uses k to define it, and when f comes into play in the code is when I get the error. Interestingly enough, whenever I run the code as a string (ie just assign all the "inputs" and run the code without the whole [out]=function[in] stuff) it runs fine. however, I need it to be a callable function :/
Thanks, Kevin
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Image Analyst
2014-3-2
Before you call femet(), put this line of code
whos k
class(k)
and tell us what you see on the command line. Actually if you hover your cursor over all the variables in the line where you're calling femet(), you should see their values in a popup tooltip string. What value does it show for k? If k is not defined, there will be no tooltip string for it, and whos k won't show anything in the command window and the class line will say
Undefined function or variable 'k'.
which means that you're trying to use k before you ever assigned a value to it.
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