Autodesk 15606-011408-9330 User Guide - Page 105

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 coordinates 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 information 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 Example 2.0 0.0 0.0 233001.5 901999.5 For example, a typical ESRI world file might look like this: 2.0 0.000000 0.000000 Working with Raster Images | 105