[mapserver-users] RE: DEM display

[David Hildebrand]

Actually, I want to show the DEM as a colour-coded elevation raster.
However, I also want to incorporate the hillshade model.  I think I can
do that by setting the OPACITY of the hillshade.

 

===========================
David V. Hildebrand
Agriculture Financial Services Corporation
(403) 782-8239   

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From: mapserver-users-bounces at lists.osgeo.org
[mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Fawcett,
David (MPCA)
Sent: Friday, November 05, 2010 7:43 AM
To: David Hildebrand; mapserver-users at lists.osgeo.org
Subject: RE: [mapserver-users] RE: DEM display

 

David, 

 

You can easily set up your hillshade image as one layer and turn it on
for display.  In addition to that, you can have your DEM as a second
layer that is not displayed, but is available for query.  

 

I don't think that I have ever used the raster query functionality, but
you can find some info here:

http://trac.osgeo.org/mapserver/wiki/RasterQuery

http://mapserver.org/input/raster.html#raster-query

 

Is this what you were thinking?

 

David.

 

From: David Hildebrand [mailto:David.Hildebrand at afsc.ca] 
Sent: Thursday, November 04, 2010 4:26 PM
To: mapserver-users at lists.osgeo.org
Cc: Fawcett, David (MPCA)
Subject: RE: [mapserver-users] RE: DEM display

 

How can I combine a pre-rendered hillshade model with an elevation
layer?  Can I set the transparency of a layer?  Is there a GDAL utility
for rendering a combined hillshade/elevation model which will still
retain the original elevation values for query?

 

===========================
David V. Hildebrand
Agriculture Financial Services Corporation
(403) 782-8239   

www.afsc.ca <about:www.afsc.ca>  <http://www.afsc.ca
<http://www.afsc.ca/> >
This communication is intended for the use of the recipient to which it
is addressed, and may contain confidential, personal and/or privileged
information. Please contact Agriculture Financial Services Corporation
immediately if you are not the intended recipient of this communication,
and do not copy, distribute, or take action relying on it. Any
communication received in error, or subsequent reply, should be deleted
or destroyed. Please consider the environment before printing this
email.

  _____  

From: mapserver-users-bounces at lists.osgeo.org
[mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Fawcett,
David (MPCA)
Sent: Thursday, November 04, 2010 7:32 AM
To: David Hildebrand; mapserver-users at lists.osgeo.org
Subject: [mapserver-users] RE: DEM display

 

I would pre-render all of my hillshades and then add them as simple
raster layers.

 

David. 

 

From: mapserver-users-bounces at lists.osgeo.org
[mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of David
Hildebrand
Sent: Wednesday, November 03, 2010 6:25 PM
To: mapserver-users at lists.osgeo.org
Subject: [mapserver-users] DEM display

 

I have an SRTM file in TIF format which I want to display in a shaded
relief but I'm not sure of the approach I should take.  Do I need to
define classes and symbols for the layer (that would not help for the
hillshade) or should I execute a script (PERL) on the server to create
the image I need on the fly?

 

Thanks for the tips.

 

===========================
David V. Hildebrand
Agriculture Financial Services Corporation
(403) 782-8239   

www.afsc.ca <about:www.afsc.ca>  <http://www.afsc.ca
<http://www.afsc.ca/> >
This communication is intended for the use of the recipient to which it
is addressed, and may contain confidential, personal and/or privileged
information. Please contact Agriculture Financial Services Corporation
immediately if you are not the intended recipient of this communication,
and do not copy, distribute, or take action relying on it. Any
communication received in error, or subsequent reply, should be deleted
or destroyed. Please consider the environment before printing this
email.

 

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