net = newff([P,T,3]); ??? Error using ==> horzcat CAT arguments dimensions are not consistent.

I have to train my network with P input matrix that is having 100 rows and 45 columns. I have created T (Target) with same dimensions.

But when I execute net = newff([P,T,3]); it gives me an error "Error using ==> horzcat CAT arguments dimensions are not consistent."

I tried "feedforwardnet" too but the similar error message appears.

Please help me to know what should be the exact dimensions of P and T to execute this syntax or if I am making any other mistake.

Thanks in Advance.

I am using MatlabR2010a

[KSSV]

Try

net = newff([P,T,3*ones(100,1)])