MATLAB: Why am I getting error when I detect dataset with SVM

Question

actually i have problem with method support vector machine (SVM), i didn't detect my dataset in the program.

here is the error:

Error using svmtrain (line 230)

svmtrain has been removed. Use fitcsvm instead.

Error in multisvm (line 28)

svmStruct = svmtrain(T,newClass);

Error in Detect (line 144)

result = multisvm(Train_Feat,Train_Label,test);

here is the code:

% Load All The Features
load('Training_Data.mat')
% Put the test features into variable 'test'
test = feat_disease;
result = multisvm(Train_Feat,Train_Label,test);
%disp(result);
% Visualize Results
if result == 0
    helpdlg(' Alternaria Alternata ');
    disp(' Alternaria Alternata ');
elseif result == 1
    helpdlg(' Anthracnose ');
    disp('Anthracnose');
elseif result == 2
    helpdlg(' Bacterial Blight ');
    disp(' Bacterial Blight ');
elseif result == 3
    helpdlg(' Cercospora Leaf Spot ');
    disp('Cercospora Leaf Spot');
elseif result == 4
    helpdlg(' Healthy Leaf ');
    disp('Healthy Leaf ');
end
%% Evaluate Accuracy
load('Accuracy_Data.mat')
Accuracy_Percent= zeros(200,1);
for i = 1:500
data = Train_Feat;
%groups = ismember(Train_Label,1);
groups = ismember(Train_Label,0);
[train,test] = crossvalind('HoldOut',groups);
cp = classperf(groups);
svmStruct = svmtrain(data(train,:),groups(train),'showplot',false,'kernel_function','linear');
classes = svmclassify(svmStruct,data(test,:),'showplot',false);
classperf(cp,classes,test);
Accuracy = cp.CorrectRate;
Accuracy_Percent(i) = Accuracy.*100;
end
Max_Accuracy = max(Accuracy_Percent);
sprintf('Accuracy of Linear Kernel with 500 iterations is: %g%%',Max_Accuracy)

Answer 1

You are getting that error because svmtrain was removed as of R2018a, which they started warning about in R2017a, after having introduced the replacement routines in R2014a.

https://www.mathworks.com/help/stats/release-notes.html?rntext=svmtrain&startrelease=R2012a&endrelease=R2019a&groupby=release&sortby=descending&searchHighlight=svmtrain