Hi

There is a classical app by the Virginia Medical School. Hope it helps

http://ginsberg.med.virginia.edu/grid.html

Cheers

Hi Jyotishman,

MIMER (http://www.bioxray.au.dk/mimer/Mimer/Home.html) is a spreadsheet-based system that can help you to design sparse matrix and grid screens.

Best regards,

Avinash

Avinash:  --- Thanks a ton; that's exactly what I was looking for. Actually there were few online tools several years ago, but they have been removed. It's great to finally have found one. Thanks again.

Francisco: --- Thanks a lot for the tool. I can see that it can generate grid screens. But can it also generate sparse matrices? I think it can't. Nevertheless this will definitely be a help sometime during crystallization. Thanks.