Plotting the misclassified data

I have classified the data using SVM,please tell how to plot the miscalssified data 

[k j]=size(datats)

groups=ones(k,1);

   groups(26:50)=-1;

   xdata=datats(:,1:2)

   svmStruct = svmtrain(xdata,groups,'showplot',true);

   legend('Normal State ','Abnormal State  State ');

   Res= svmclassify(svmStruct,datats(:,3:4),'showplot',true)

   legend('Normal State ','AbnormalState ');

please tell how to plot misclassified data