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This page updated: January, 2006

[Version 1.9 released: January, 2006]
winsite as dtm19.zip includes source code.

DTM™ Digital Terrain Mapping

DTM 3D

The elevation data is from Etopo5 and the Landsat composite image overlay is from NASA. Please excuse the jpg scrunching. Your times may vary depending on computer, texture type..density, and other variables :)

DTM ecotype

DTM Menu

DTM Menu (Bermuda Triangle)

Note the need to select Elevation data and .shp overlay of the same resolution... and Projection..Datum.

Images and Data Information
overall DEM notes is the same text attached to world image below: Etopo5 dem Data Information.
DEM data sources and ideas ~ todo list
.tpcfg Read Me file
.tpcfg file howto
Map Projection parameters another way Map Projection parameters another way Map projection parameters
Map Projection input ranges

934 USA 1 Degree DEMs ~10G= 2.5G=1G

DEM cells overlay

425 Alaska 1 Degree DEMs 2G=572M=153K

Alaskan DEM cells overlay

Etopo5 dem Data Information

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Copyright © 1991..2006 by Ivan Lee Herring