Error using gmdistribution for GMM

Hi, I am trying to create a GMM model for my dataset X which is of size 200x39. At the line gm = gmdistribution(mu, sigma, pcomponents), I am getting the following error

"Error using checkdata (line 18) X must be a matrix with 39 columns.

Error in gmdistribution/pdf (line 16) checkdata(X,obj);"

Size of mu -> 32x39, sigma -> 39x39x32, pcomponents -> 1x32

My X is infact having 39 columns. So I am not able to understand what exactly is causing the error. Any hint would be of great help. Thanks in advance.

Answer 1

[KSSV]

Check the sizes of mu, sigma,pcomponents you are entering into the function?

For your data of 200x39, sigma should be 39x39 or 1X39 and pcomponents should 1x200.