[Gdal-dev] PNG Heightfield

J Douglas Gough doug at jdgis.com
Mon Apr 5 11:54:18 EDT 2004

Sorry, but am I missing a setting to receive attachments correctly?  They
all show up as ascii.  I've tried going through web mail and outlook
express, but still no zip files.
----- Original Message ----- 
From: "J Douglas Gough" <doug at jdgis.com>
To: <gdal-dev at remotesensing.org>
Sent: Monday, April 05, 2004 8:28 AM
Subject: [Gdal-dev] PNG Heightfield

> I'm interested in checking out the gmt to tga heightfield code that J.
> suggested. PNG would be a great way to store elevation data - it's got
> lossless compression and could be easily ported once a standard palette is
> created.  Sort of a "GeoPNG" for elevation (i.e. PEG or 'PNG Elevation
> Graphic') was what I had in mind.  If I come up with something useful,
> make sure to post it.  I've got the entire National Elevation Dataset
> converted to MrSid as integer values and ready to host online, but the Sid
> format is not as easy to read/write and add to custom apps as far as
> licensing compared to PNG.
> doug at jdgis.com

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