This function allows you to import maps made by other manufacturers that are not sufficiently well calibrated because they do not contain correct information about the map’s datum and/or the map’s projection. If you want to import a map and correct the errors, proceed as follows:
1. Select the menu option ‘Maps > Import Maps’.
2. Select the drawing of the map that you want to open. Land/Air allows you to open these formats:
•DRG file extensions: *.BMP, *.TIF, *.JPG, *.TFW, *.JGW
•SID file extensions: *.SID
•ECW file extensions: *.ECW
•APRS file extensions: *.GIJ, *.BMP, *.INF
•AutoCAD vectorial maps: *.DWC, *.DFX
•Arc View vectorial maps: *.E00, *.SHP
•Micro station vectorial maps: *.DGN
•MapInfo: *.MIF, *.TAB
3. With the map open a new window will open, the data correction window. This window gives you details that exist about the map. These are presented as four points that can help you to assign the map’s projection. You will find them in the top right hand part of the window. Here are the operations that you can carry out in the data correction window:
•Select a projection: To choose the type of projection that you think corresponds to the map.
•Select datum: Choose the most probably datum for the map.
•Zone and hemisphere: Select the UTM zone and indicate if the map is located within the north or south hemisphere.
•Units advanced options: Click here to choose the units that you want and to write the deviation of the location of the map on the X, Y and Z axels.
These are the questions that will appear in the lower part of the window:
•Do you want to import all the maps in the folder?: If you activate this option, you will also import all the maps stored in the same folder as the map you have imported. The same adjustments will be applied to all of these maps. This can save a lot of time if all of the maps need the same adjustments.
•Do you want to store all the folder’s maps in the same file?: This option appears when you work with vectorial maps. This option allows you to join together several maps that were original stored individually but in the same folder.
•Place each file in a different layer?: If you did choose the previous option, you will also be able to choose if you want each of the original maps to be stored on different layers in the new single vectorial map.
4. Once all is correct, click on the button OK and store the map with a new name in the folder:
•Windows: ‘Documents\CompeGPS\Maps’
•Mac: ‘Documents\CompeGPS\Maps’