How to create a KNN classification model with categorical AND numerical data?

Hi,

I'm wanting to fit a KNN classification model to data. The data has numerical AND categorical variables in it.

I know that ClassificationKNN.fit (<http://www.mathworks.com/help/stats/classificationknn.fit.html>) allows you to specify 'CategoricalPredictors' as - 'all' — All predictors are categorical. - [] — No predictors are categorical.

However, is there a way to specify which are categorical and which are numerical since I have both?

If not, how do I use both types?

Graham