You need to have an individual Import for each DEM. You then pass all of
them to CollectMultiGrid to "stitch" them together, assuming that the DEMs
represent individual tiles, which is common. If there is overlap, then
you'll need to mark which cells are to be used in those areas. If you want
to make this more elegant, you can put the Import into a For loop,
appending to CollectMultiGrid with each iteration, and then make a macro
out of it. The input to the macro would indicate the number of DEMs, path
and file name information, etc.
|---------+---------------------------------------->
| | Karl Pohlmann <[EMAIL PROTECTED]> |
| | Sent by: |
| | [EMAIL PROTECTED]|
| | son.ibm.com |
| | |
| | |
| | 07/07/2004 07:02 PM |
| | Please respond to |
| | opendx-users |
| | |
|---------+---------------------------------------->
>---------------------------------------------------------------------------------------------------------------------------------------------|
|
|
| To: [email protected]
|
| cc:
|
| Subject: [opendx-users] stiching together DEMs
|
|
|
>---------------------------------------------------------------------------------------------------------------------------------------------|
Hello again,
First of all, I appreciate all the help that I have received on this
forum over the past several weeks. I've been able to get up and running
with OpenDX very quickly as a result.
My question is simple: Is there a way to load multiple, same structure
data sets without having to set up an input module for each one? In
this case I am importing digital elevation data (converted from DEM to
DX format using dxconvert). Each dataset covers a subset of the final
area in the visualization, and my understanding of the dataflow model
suggests that each successive DEM that I import will replace the last
one in the final image. To get around this, my DX program includes an
import module for each one of the six or eight DEMs that I need. This
gets rather messy so I'm wondering if there is a more elegant solution?
Thanks in advance,
Karl Pohlmann
--
Karl Pohlmann
Associate Research Hydrogeologist
Division of Hydrologic Sciences
Desert Research Institute
755 East Flamingo Road, Las Vegas, NV 89119
Phone: 702-862-5485 Fax: 702-862-5427
E-mail: [EMAIL PROTECTED]
http://www.dri.edu/People/karl/
- - - __o
- - - - _`\<,_
- - - - - (_)/ (_)
