How to solve this problem.

I am trying to run the folloing code and getting the error:

Error: label vector and instance matrix must be double

Dot indexing is not supported for variables of this type.

Please help me to solve this problem. I am unable to get it.

Answer 1

[Cris LaPierre]

The function svmtrain was removed starting in R2019a

From here:

svmtrain and svmclassify have been removed

The svmtrain and svmclassify functions have been removed. Use the fitcsvm function and the predict function of ClassificationSVM instead.

To update your code, replace all instances of svmtrain with fitcsvm, and replace all instances of svmclassify with predict. For more details, see the Compatibility Considerations sections of svmtrain and svmclassify.