Undefined function 'eq' for input

It happened when I put this line in:

PooledCov = PooledCov + ((nGroup(i) - 1) / (n - k) ).* cov(input(Group,:));

Please help!!!

[Jan]

Please copy the complete error message.

[Walter Roberson]

What is "input" in your situation? input() is a MATLAB library call to request input from the user; if you are trying to use "input" as a variable name it is better if you rename that variable.

[Lester Lim]

My input situation is actually a variable called from the GUI. Im doing an LDA(Linear discriminant analysis) on a picture. handles.I is the picture with the pixels loaded into and handles.lableimage is the labelled image. So I think input in this case I should put as handles.I. The program I am looking at and intending to use in my GUI is :http://matlabdatamining.blogspot.sg/2010/12/linear-discriminant-analysis-lda.html

[Jan]

What is "a variable called from the GUI"?

[Lester Lim]

In my case I did a roipoly on a picture, writes a variable into the variable editor. The variable when opened shows the pixels/labels contained.

Answer 1

[Jing]

Can you just run 'x=1+1'? If this line is ok. Then there should be something wrong with your variables, what it PooledCov and other variables? Can you post the 'whos' results of them?

[Lester Lim]

Yup, variable x = 2. So its the problem with the variables right? Im currently running it in GUI for LDA. I will try to look into the variables...