On Feb 12, 11:23 am, david <da...@[EMAIL PROTECTED]
> wrote:
> 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!
>
> capmail79-goo...@[EMAIL PROTECTED]
wrote:
> > 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
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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