Is it possible to replace a srf grid with sine wave pattern along each row and deform it?

Hi, I am a beginner in Grasshopper and after goign through the diagrid tutorials on the primers, i wonder if its possible to have a fundamental sine wave within each of the subdivded grids. So when part of the grid gets stretched the U-V changes, the wave length or the amplitude of the wave also follows the deformation. 

And isit possible to reverse the operation so that what i select a particular sine wave in the list and  change the amplitude of that wave which intern may pushe the grid on top or below it and affects the wave within.

Sorry if i cant explain it well

i forward to ur replies

Thanks,

Jas