The latitude-longitude projection format (LatLonProjection) in the Terrain Images.cfg file is defined by four parameters for latitude and longitude.
To specify a LatLonProjection for unprojected images (raw unprojected bitmaps and general images, unprojected), you can enter settings for the LatLonProjection within the Terrain Images.cfg window in data workbench. See To specify a LatLonProjection for unprojected images .
To specify a LatLonProjection for images with embedded projection information, you must open the Terrain Images.cfg file in a text editor such as Notepad, set the Projection Info parameter to “LatLonProjection”, and add settings for the LatLonProjection. See To specify a LatLonProjection for images within embedded projection information... .
To Specify a LatLonProjection for Unprojected Images
- Open the Terrain Images.cfg file in data workbench and add a terrain image layer source as described in To define a terrain image layer .
- Edit the Projection Info parameters using the following parameters table as a guide:ParameterDescriptionLat0The latitude of the top edge of the image, in degrees, where 90 is the North Pole and -90 is the South Pole.Lat1The latitude of the bottom edge of the image.Lon0The longitude of the left-hand edge of the image, in degrees, where positive numbers are east and negative numbers are west longitudes.Lon1The longitude of the right-hand edge of the image.
- Save the file by right-clicking (modified) at the top of the window and clicking Save .
- To save the locally made changes to the data workbench server machine, in the Server Files Manager, right-click the check mark for Terrain Images.cfg in the Temp column, then click Save to > < server name > .
To Specify a LatLonProjection for Images Within Embedded Projection Information
- In the Server Files Manager, click Components to view its contents. The Terrain Images.cfg file is located within this directory.
- Right-click the check mark in the server name column for Terrain Images.cfg, then click Make Local . A check mark appears in the Temp column for Terrain Images.cfg.
- Right-click the newly created check mark in the Temp column and click Open > in Notepad . The Terrain Images.cfg file appears in a Notepad window.
- Edit the Projection Info parameters using the following sample file fragment as a guide. Be sure to specify the projection type as highlighted below. For descriptions of the parameters, see the LatLonProjection Parameters table in the previous procedure.
Projection Info = LatLonProjection: Lat0 = double: 90 Lat1 = double: -90 Lon0 = double: -180 Lon1 = double: 180