Ellip in R2011a

I recently updated my MATLAB from R14 to R2011a. I am running the identical code, but I am getting the following error. I am an experience MATLAB user, but I will admit to being a little rusty. Can someone point me in the right direction?

Here is what I put in: [b, a] = ellip(2, 0.5, 20, 0.5, 'low')

Here is the error: ??? Undefined function or method 'eml_assert_all_constant' for input arguments of type 'double'.

Error in ==> ellipap at 8 eml_assert_all_constant(varargin{:});

Error in ==> ellip at 76 [z,p,k] = ellipap(n, Rp, Rs);

As I said this is code I have used in the past, I did hard code in the numbers to make sure that my inputs were okay, but I got the same error.

Anyone else had the same error?

Thank you in advance for any help.

Answer 1

[Titus Edelhofer]

Hi Susan,

my guess: ellipap is some other function then ellip expects.

which ellipap

gives me C:\MATLAB\R2011a\toolbox\signal\signal\ellipap.m

Does it look somewhat similar for you?

Titus

[Susan]

Titus,

Thank you so much. You indeed pointed me to the answer. Somehow when my MATLAB upgraded it was still pointing to some of the old files from the other version. I have now fixed that. Ellip now appears to be working.

-Susan