[vtkusers] How to import NASA SRTM DEM data into VTK

[Mathieu Malaterre]

On Mon, Oct 13, 2008 at 3:32 PM, Michael Jackson
<mike.jackson at bluequartz.net> wrote:
> http://www.vtk.org/doc/release/5.2/html/a00665.html#b853fba8decf9550e4678fa4f4ca9ad0
>
> Page 405 in the 4th edition of the "Visualization Toolkit" explains what the
> data extents are.
>
> Basically they are the min/max (in x,y,z) of your data. For example if your
> data was 100x 50 x10 but the actual minimum value was 1000, 1000, 1000 (x,
> y, z) then your data extents would be 1000, 1101, 1000, 1051, 1000, 1011
> (Xmin, Xmax, Ymin, Ymax, Zmin, Zmax).

As I said in my previous email, if your data is 512x512x1, VTK
dimension is (512, 512, 1) BUT data extent is: (0, 511, 0, 511, 0, 0)

Elvis,

you are off by one, AFAIK.

reader SetDataExtent 0 1200 0 1200 0 0

2cts
-- 
Mathieu