How to fix an error about struct input of an function in Matlab?

I wrote this function svmclassify:

[SL: Removed the svmclassify function. This is identical (modulo a few blank lines added) to the first 65 lines of svmclassify.m from Statistics and Machine Learning Toolbox in release R2015a. Please do not post the text of MathWorks functions.]

There is an error for this line:

error(message('stats:svmclassify:TwoInputsNoStruct'));

The error is:

Error using svmclassify (line 56)
The first input should be a struct generated by SVMTRAIN.

I'll be grateful to have your opinions about how to fix this error.

Thanks

Answer 1

[Fabio Freschi]

It looks like you are passing the wrong data to the function. The first input must be a structure generated by the function SVMTRAIN of the same package