Hourrah Finally. I am was able to make v.vol.rst work. How it worked. I made the resolution to be 1 m in the 3 directions, x,y,z directions with g.region. I thought that perhaps due to the high density of points perhaps i needed to increase the resolution. Now the work begins.
I am viewing the data with Isosurface with the 3d viewer, under (I cannot forward image as too large for mail list, and I am also sending this through another email chain View tab->3D raster, -> choose 3d raster -> add isosurface, define the interval you want to see, and color set as constant (i used bgyr as the color, but everything turns out blue..). THANK YOU for your help. will keep u posted on progress.
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