How to export elevations to Shapefiles?

“We have the iCMTGISII Ap installed on one of our iPads. We can see the X, Y and elevation data in the Properties tab but when the points are exported to a Shapefile, the elevation data does not get exported. How do we get the elevation data exported with the Shapefile to be displayed in either ArcGIS or AutoCAD?”

In the Export Shapefile screen, please mark the check box for “3D” if you want the elevation data exported as well.

Really? You could use an iPod touch for GPS data collection?

Yes, provided you also get a compatible external GPS receiver to use with the iPod touch device. GPS receivers range widely in price, in keeping with the degree of precision they provide. A few expensive GPS receivers (such as iSXBlue and EOS Arrow) are available for renting for undertaking short-term work that requires sub-meter horizontal position accuracy.

Some companies employ multiple workers to perform GPS/GIS mapping and data collection tasks. Unless they already own iPhones, it will be more economical for them to run our iGPSGIS II or iCMTGIS III app on an iPod touch in conjunction with the external GPS receiver.

How to set up iCMTGIS PRO to work with EOS Arrow Receivers

A video is worth a thousand lines of text.🙂

Will I lose any job data when I uninstall an app?

Yes. When you uninstall an app, all the job data files will be lost.

Please use iTunes to copy the data files (including the configuration file with the file name extension “.cfg”) to your PC before uninstalling and reinstalling the app. Then copy these files back to the documents folder of the app after reinstalling it.

Does iCMTGIS PRO work with iSXBlue II GNSS selected as the External GPS receiver?

isxblue-ii-gnss-512x384Yes. After establishing Bluetooth connection, select iSXBlue as the device and com.geneq.sxbluegpssource as the protocol. Then iCMTGIS PRO can receive and parse the NMEA message stream from the GNSS receiver and display information about the GPS status.

For RTK GPS surveying, you can run the iSXBlue RTN NTRIP client app to connect to the RTK network. (link to

Please see the following press releases:

American Surveyor


App for finding property pins

“I am looking to find two property pins. I have a map of the property lines. What app do I need for a iPhone 5 and will this be very close to the pins? What is the cost for this app?”

What kind of map do you have? Is it a paper map or a file? If it is an image file, what is the file format (such as GeoTiff, GeoJpeg, Shapefiles, etc.)?

Our apps work on iPhone 5. The less expensive ones cost only $9.99. Stakeout iCMT provides the function to help you approach a point (pin) if you know the coordinates (latitude and longitude) of the point. Are you able to match your property map to that displayed in Google Earth? If so, you could probably get the approximate coordinates for the pins from Google Earth then enter those into the Stakeout iCMT app on your iPhone 5. (Use the Locate a Point by Address function described in the attached Help document then store the point.)

If you need additional functionality (such as entering property description from a deed, or mapping the property boundary), then you could consider our other apps, such as iCMTGIS III.

How close you can get to the pin depends on the GPS receiver used. The one built into the iPhone has a precision of about 10 meters or worse. If you just need to find the pin, this will probably be fine. If you need to record the GPS coordinates of the pin that you find, then the location accuracy won’t be that great. Some users use an external GPS receiver like the Dual XGPS-150A or the Bad Elf 2200, which claims 2 – 5 meters accuracy.

Is your app compatible with TruePulse/LTI range finders for laser offset mapping?

“We are using your App, please advise whether the application is compatible with TruPulse / LTI range finders for laser offset mapping?”

1. Our iOS apps do not provide direct interface with a laser range finder. (Our FieldCE GIS and FieldCE SURVEY for use on Windows Mobile PDAs do provide this interface.) However, the iGPSGIS II, iCMTGIS II, iCMTGIS III, iCMTGIS PRO, Forester GPS GIS II/III and Farming GPS GIS II/III and Utility Data Collection apps provide the ability to manually enter the offset data from the laser.

Under GPS – Collect there is a Traverse button.
You start from a known point as reference, specify an existing Point Topic, then, when you tap the Store button, you will see the data input fields for Slope Distance, Bearing (or Azimuth) and Slope Angle. After entering the data, tap on OK to store the point.
Tap Store again to traverse from the point you’ve just created to the next point.

To switch back to doing GPS data collection, tap the GPS button.

2. In the Feature Properties screen there is a No Offset button. You can use this function to enter the offset information for a Feature. Then the button will change to With Offset. (If the selected point is a Traverse point, the button is displayed as Traverse. You can use it to view/edit the existing information.)