PCA and ICA analysis in Matlab

Hi,

I am doing classification in SVM and before that i need to go for feature selection. My excel data set has 97*41 where there are 41 features and 97 Images respectively. I am using the below code in Matlab.

clc;

clear all;

close all;;

load 'fully.csv'

num=pca(fully);

d=cumsum(num);

What value should i take now? Both gives 41*41.Is it correct?Isn variable num correct or cumsum correct?