Finding out band number for chlorophyll on matlab

Hello. I have downloaded files a particular area of ocean and computed chlorophyll content in those files on SNAP. I need to know how to find out the band number for chlorophyll and also how to extract particular bands on matlab. Please write me the code and explain me the procedure as i am unable to find answers

[Rik]

Have a read here and here. It will greatly improve your chances of getting an answer.

You can get help here for specific Matlab problems. If you need someone to do the work of translating your problem to a Matlab problem as well, you should consider hiring a consultant.