File types used by CMT software

Now that more and more of our customers are using our PC mapping software in conjunction with our apps for the Windows Mobile devices and the iPad and iPhone devices, this is a good time to talk about the relationship among some of the main types of files used on the various software platforms.

1) Feature Coordinate Files – .ftr files

Our PC software stores the GPS coordinates for a job in a .ftr file.

2) Feature Map Files – .fmp files

Our PC software stores the GPS coordinates as well as non-spatial map elements (such as symbols and colors, links to background maps, etc.) for a job in the .fmp file.

3) Portable Map Files – .pmp files

The .PMP files are Portable Map Files for use on the mobile devices, such as a Windows Mobile device or an iOS device.

After loading a .FMP map file into our PC software, you can select File – Save As then select the .PMP file type in the “Save as type” box at the bottom of the dialog window. Enter a file name then click on “Save”. At the top left side of the screen, you will see that the job name now ends in .pmp.

The .pmp file is what you can transfer to your iOS device for use with a compatible CMT iOS app.

4) Background Maps

In our PC mapping software, you can use the following as background maps:
Raster Images (geotiff, geojpeg, MRSID, ECW)
CMT Basemaps
Geo-referenced image captured from Google Earth

Our iOS apps use the built-in Apple Map as reference map. This Map is available when the Apple Location Service is available. You can turn it off by using Main Menu/Map/Close Map. You also have the option to select a Satellite map or a Standard map. This is described in the Help file under the Main Menu of the app.

The Apple Map may not be totally up to date. Therefore, if you have a good geo-referenced raster image, and you have a CMT iOS app that provides the Background Map function, you can use our PC mapping software to convert the image to a .pim file to use on your iOS device. This is discussed in the next item below.

5) Portable Image Files – .pim files

The .pim files are the Portable Image files for use as off-line maps on the mobile devices. You will need to use a CMT PC mapping software program to create the .PIM files. In your PC-GIS X software, this function is under Utilities – Mobile Device Interface/Image Converter.

Under Help is an Online Manual. Please enter CE Image Converter in the Search box and follow the instructions to create a .pim file for a map that you have loaded into the PC software. You will be able to select just a small portion of the map that you need to make a .pim file for use on your mobile device.

To make the .pmp and .pim files available for use by your iCMTGIS II, iGPSGIS II app, Farming GPS GIS, Forester GPS GIS or Utility Data Collection app, you will need to copy them to the shared files folder for the respective app. To load a .pim file into one of these apps, select Main Menu/Background Map/Load Registered Image then select the desired file.

6) World Files – .wdf files

You can download geo-referenced raster images for use as background maps in your CMT PC mapping software from such a site as

http://datagateway.nrcs.usda.gov

Before loading a geo-referenced image, you will need to set the datum, coordinate system and distance unit in your CMT PC software to match those that were used in creating the geo-referenced raster images (e.g. UTM NAD83 Meters).

When you load a map image, the CMT mapping software will ask you if you would like to have a .wdf file created. With a .wdf (world file) created, in the future the software will load the map without prompting you for the coordinate system. However, if a .wdf file was created when the map was loading incorrectly, then you must delete the bad .wdf file then reload the map in the correct coordinate system. Otherwise the software will keep using the bad world file as a reference and load the image incorrectly.

7) Feature List Files – .fbr

The Feature/Attribute/Values data base used by the CMT apps are stored as .fbr files.

8) Other file formats

Certain apps may also save or export data in other file formats, such as .dxf, .txt, .csv, .dcf, .lnd, and so on.

Many of our iOS apps can import Shapefiles, and some of them can export data in Shapefile format, which involve such file name extensions as .shp, .shx, .dbf and .prj.

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