Can anyone help me in writing the code for layer stacking of satellite data?

I want to stack the Band 4, Band 3 and Band 2 layers of Sentinel-2 satellite, and as I am new to this field I am finding it difficult to do so.

[Walter Roberson]

Please make your question more specific.

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer