Displaying elevation data
perrygeo at GMAIL.COM
Mon Oct 22 01:13:21 EDT 2007
In terms of visualizing elevation data, there are a number of good options:
- create a hillshade and overlay that on the elevation layer at 50% opacity
- colorize the elevation layer (ie green to white instead of black&white)
- generate a vector contour layer
Mapserver itself is not capable of doing this processing; you can
achieve these through many other pieces of software such as GRASS,
MicroDEM, GDAL, etc. I wrote a few custom apps for this purpose that
are described on my site : http://www.perrygeo.net/wordpress/?p=7
Mapserver only does 2D so true 3D is not possible.
On 10/21/07, Vishal Nagpal <vishu_73ns at yahoo.com> wrote:
> I am trying to display elevation data dt1 and dt2 files.
> I am getting a gray scale image as output. Though it gives an impression of
> varying heights but
> Is it possible to do more with it, like see contours, or see 3D.
> I have tried changing scale but it only varies the shades of grey.
> Surprisingly A combine layer of tif and elevation shows some color shades. I
> don't know why?
Matthew T. Perry
"Never ascribe to malice, that which can be adequately explained by
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