OpenEV

1. Installation
1. 1.1. Enabling gdal commandline utilities
2. 3D View Tricks

UPDATE: as of fall 2004 the best place to get all of Frank Warmerdam's tools (OpenEV, GDAL/OGR, PROJ4, OGDI) now in a single easily installable package(!), is FWTools

Official website: http://openev.sourceforge.net/

OpenEV + gdal: ftp://ftp.remotesensing.org/pub/gdal/openev/

Installation

Unpack openev_fw_###.zip to c:\local (or whatever) with paths. Create a shortcut in your favourite program launching area to c:\local\openev_fw\openev.bat.

Enabling gdal commandline utilities

Edit c:\local\openev_fw\setfw.bat, changing the line containing OPENEV_FW_DIR as required. Copy setfw.bat to a directory in $PATH. Run setfw whenever you are about to embark on a commandline session. The most used commands are:

gdalinfo	get and report information about X image
gdal_translate	convert image X to format Y
gdalwarp	project image X to projection Z

See http://www.remotesensing.org/gdal/gdal_utilities.html for help on commandline options and http://www.remotesensing.org/gdal/formats_list.html for supported formats and their respective options (like compression level). (Also installed in c:\local\openev_fw\html )

If you are forever getting confused about whether or not to underscore, rename (or copy) gdal_translate.exe to gdaltranslate.exe and forget about it.

3D View Tricks

For extremely large images:

open the drape image on it's own (File > Open).

open the drape image and DEM together (File > Open 3D).

In the Layers pallette the uppermost layer is the one most recently opened, in this case the 3d view. Toggle the 3d layer off.

Navigate to approximately where you want your camera. Don't get too close to the ground though because the image is currently displayed at sea level.

Toggle the 3d layer back on, and voila!

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OpenEV

Table of contents

Installation

Enabling gdal commandline utilities

3D View Tricks