iris dataset with SVM

[aicha mabrouk]

i use the iris dataset with SVM ,when i calculate the kernel function i have" Length of label vector does not match # of instances"

SSapp=S(1:105,:);

SStest=S(106:150,:);

LS=[1*ones(1,35) 2*ones(1,35) 3*ones(1,35)];

 model1 = svmtrain( LS',SSapp','-s 1 -t 0 -g 0.25  -c 5 -n 0.5 -r 2 -d 3 -b 1'); 

how can i solve this problem ?