Georeference File Formats - Autodesk 15606-011408-9330 - MAPGUIDE R6.3 SITE LIC-UPG R6 User Manual

Another way to generate a RIC manually is to use Autodesk MapGuide
Author to obtain the coordinates of the image extents. First, display each
image on a layer, and then zoom to opposite corners of the image (lower-left
and upper-right), reading the coordinates from the status bar. These coordi-
nates indicate the extents of the image. They do not have to be exact, only
greater than the extents of the actual image. The extents in the RIC are used
only to determine if an image might be visible. The georeferencing informa-
tion from each image will be used to georeference the image within the tiled
suite.

Georeference File Formats

A georeference file indicates how to place a raster image on a map. Autodesk
MapGuide Author supports four georeference file formats: ESRI world files,
MapInfo tab files, GeoTIFF files, and header files.
ESRI World File
An ESRI world file is an ASCII text file that uses the following formats:
Format
<x dimension of a pixel>
<x rotation factor>
<y rotation factor>
<negative y dimension of a
pixel>
<x value of the upper-left
pixel>
<y value of the upper-left
pixel>
For example, a typical ESRI world file might look like this:
2.0
0.000000
0.000000
Example
2.0
0.0
0.0
-2.0
233001.5
901999.5
Working with Raster Images
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