Hello Everybody!

I want to transpose 3D Radar values from an irregular grid to a

definable 3D grid. Since I could not find any function for the 3D

problem I tried the function trigrid for 2D grids, which works very

well for the middle area of my domain, but does only poorly replicate

the radar echoes on the edges. I assume, this is due to the

interpolation of the values, which happens within the function.

If I could have the source code of the function trigrid, i could

possibly adapt it to my problem, but i could not find that.

So I tried to find a function which just takes the value of the

nearest neighbour and writes it on the new grid, without any

interpolation. I did not succeed here, too.

Does anybody know a program for my problem or where I can get the

source code of the function trigrid? Or even better, it would be

great, if there is a program which could handle the grid

transformation problem quickly and efficiently on a 3D grid!

Thanks, very much!

Vera

Hi,

I use this one to interpol with nearest_neighbour:

z_Data_limits=GRIDDATA(xutm_i(0:num_gates_max-1,*),yutm_i(0:num_gates_max-1,*),

$

z_data(0:num_gates_max-1,*,k,i),METHOD='NearestNeighbour'),TRIANGLES=tri....)

Is this what you want?

Cheers!

I use this one to interpol with nearest_neighbour:

z_Data_limits=GRIDDATA(xutm_i(0:num_gates_max-1,*),yutm_i(0:num_gates_max-1,*),

$

z_data(0:num_gates_max-1,*,k,i),METHOD='NearestNeighbour'),TRIANGLES=tri....)

Is this what you want?

Cheers!

Take a look at the QHULL and QGRID3 functions, particularly Example 3

in the QGRID3 help file. Seems to me this might give you what you

want.

All the best,

Chris

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