PCA and ICA analysis in Matlab

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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?

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