axis names in svm plot

I am using svm for anomaly detection. I am using 2 dimensional data.

svmStruct = svmtrain(trf3,labeln1,'kernel_function','rbf','ShowPlot',true,'method','QP');
ok1 = svmclassify(svmStruct,testf3,'ShowPlot',true);

so in above training and testing figure shows but I want figure with xlabel and ylabel names. how to give name to axis.