Help "index matrix not consistent"?

I have to writhe matlab code for image compression.

i got the three values domr, domg, domb

domr=[6 7];

domg=[3 4];

domb=[1];

dom=cat(3,domr,domg,domb); ??? Error using ==>cat CAT arguments dimensions are not consistent.

Error in ==>

FVQLOWCOMPWMINCOLOR at 295

        dom=cat(1,domr,domg,domb); 

But I can't concatenate the values.I got the Error result " Cat argument not consistent" how can I concatenate that element? any body please help me?

duplicate is at http://www.mathworks.co.uk/matlabcentral/answers/55485-how-can-i-cancate-the-array-r-g-b-values

We already asked you to explain your desired results when you posted this before in http://www.mathworks.co.uk/matlabcentral/answers/55485-how-can-i-cancate-the-array-r-g-b-values

Answer 1

domr=[6 7];
domg=[3 4];
domb=[1];
dom=[domr,domg,domb]

%or

dom=cat(2,domr,domg,domb)

Answer 2

The problem is size(domr), size(domg) & size(domb) is not equal..

or

you can try like this:

dom=cat(1,domr(1),domg(1),domb(1));

dom=cat(1,domr(2),domg(2),domb(1));

Thank you sir,