How to create categorical array from integer array?

I would appreciate some help on the following:

I would like to create a categorical array from an integer array. When I use the sample code from the documentation center:

A = gallery('integerdata',3,[2,3],3);
valueset = 1:3;
catnames = {'car' 'bus' 'bike'};
B = categorical(A,valueset,catnames);

I get the following error message: Error using categorical Abstract classes cannot be instantiated. Class 'categorical' defines abstract methods and/or properties.

What does this error message mean? and how can it be resolved? Thanks!

Answer 1

[Wayne King]

Which version of MATLAB are you running? I do not have any problem executing that code on R2014a or R2013b.

If you enter

which -all categorical

what is returned? The only entry should end in:

toolbox\matlab\datatypes\@categorical\categorical.m

[PIT]

Dear Wayne, Thanks for your quick response.

The version i'm running is: 8.1.0.604 (R2013a)

>> which -all categorical /Applications/MATLAB_R2013a.app/toolbox/shared/statslib/@categorical/categorical.m % categorical constructor