how to convert categorical to numerical ?

I havae a CSV file(246 X 1) that has categorical data(names of different arrhythmia). I would like to use neural network toolbox to train the model. How can I convert this categorical data into numerical data and train the model?

Answer 1

[KSSV]

Check the below pseudo code......you can get it done with ease using unique.

load fisheriris.mat ;
[c,ia,ib] = unique(species) ;
iwant = ib ;