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Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: gradient error
Replies: 5   Last Post: Jan 12, 2013 4:03 PM

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ben

Posts: 32
Registered: 10/1/10
gradient error
Posted: Jan 12, 2013 1:49 PM
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Hi ,

I have a vector 'a':

a = [32 45 54]

When I use the gradient function as follows , I get no errors from Matlab:

>> gradient(a);

ans =

13 11 9

But I want the dF/dx and dF/dy components from the gradient , but I get the follwoinf error:

>> [Fx, Fy] = gradient(a);
Error in ==> gradient at 49
[msg,f,ndim,loc,rflag] = parse_inputs(f,varargin);

??? Output argument "varargout{2}" (and maybe others) not assigned during call to "C:\Program
Files\MATLAB\R2010a\toolbox\matlab\datafun\gradient.m>gradient".

Any help appreciated.

-ben

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