How would i do it in matlab?

How would images be assigned numerical values in matrices for classification multiclass svm in matlab? How would I specify that group 1=apple,group 2 = orange and group3=banana?

[dpb]

Not fully clear but if have Statistics Toolbox, look at

doc nominal

Answer 1

[Apdullah YAYIK]

You have 1x1 features of different types of images. Rename them as "featureset_image"

Add class information as numeric to feature matrix with "dataset" function

If you have 500 apple, 500 banana and 500 orange your class vector is;

class=[ones(1,500)';2*ones(1,500)';3*ones(1,500)];

And DataSet is

dataset_image=dataset(featureset_image, class)