App for entering heading and distance information from a platt map

“I want to find and map my property lines, I have 16 acres of woods and wetlands. I have located one survey marker and I have a platt map of my property with headings and distance to the next corner. Which one of your products would let me create a waypoint at the survey marker to use as the starting point and then enter the rest of the heading and distance information so that I can walk and mark my property lines and corners?”

The Deed Calls & Stakeout app will let you stand at the survey marker and get the GPS coordinates of that point as the starting point for entering the deed plot information (bearing and distance). If your deed document uses magnetic north, then you should enter the declination angle for your location into the Orientation field in the app. Then you can use the Line Stakeout function in the app to help you walk and physically mark your property lines and corners. This app works on iPhone and iPad devices.

Keep in mind, though, that the accuracy of your work depends on the GPS receiver used, and the built-in GPS receiver of the iPhone and iPad devices is not that accurate. Some of our app users use a compatible external GPS receiver, such as the Dual XGPS-150A or the Bad Elf GPS, to get 2 – 5 m accuracy. GPS receivers with sub-meter precision, such as the iSXBlue II and EOS Arrow, cost a great deal more.

Stake out using iPhone device

“I search application to stakout a polyline with my iphone. I see you make this for ipad but i don’t see for iphone.”

The Stakeout iCMT app can run on iPhone and iPad devices.

If your polyline is stored in a DXF file or as Shapefiles, you can import it into the “Stakeout iCMT” app and let the app help you stake it out.

The accuracy of your work depends on the GPS used. The iPhone GPS is not quite accurate. You can get a compatible external Bluetooth GPS (such as Dual XGPS-150A or Bad Elf GPS) to achieve about 2 – 5 m horizontal position accuracy. High-precision GPS receivers will cost a lot more than these GIS-grade GPS receiver.

User-defined projections

“. . . we would like to know by PC-GIS software possible to establish our Coordinate system (KTM Projection and GRS 1980 Datum) to use it in iCMTGIS Pro software?”

The KTM-KUDAMS projection for Kuwait is based on the Transverse Mercator projection. You can use the PC-GIS X software to create a user-defined coordinate system by entering the parameters for this projection. Then please copy the user_cor.sys file created by PC-GIS X to your iCMTGIS PRO documents folder. Then iCMTGIS PRO will let you select the user-defined coordinate system to use.

Direction of deed calls line segment

“I just bought Deed Calls Pro and I was wondering when adding a line segment with bearing information how to get the line to go the other direction. For example: N54°3740W draws the line in the wrong direction.”

Please note that, in the deed plot you are doing, the green node is the last starting node. The line segment does go from the green node to the yellow node in the NW direction. If you enter a long distance, you should e able to see the line labeled with the correct bearing. If you wish to change the direction, then change the bearing of the line segment.

Using iSXBlue II with iCMTGIS PRO

A customer using iSXBlue II GNSS with iCMTGIS PRO on an iPad mini 2 sent us a few question:

1) He wondered how to tell if the iPAD running iCMTGIS PRO is operating with the external SX Blue II.

With the iPad paired over Bluetooth with the iSXBlue II GNSS, tap on the GPS icon and select “Turn GPS on”. A GPS marker should appear and the app should issue a navigation beep once every second. This indicates that the app is receiving the GPS position data from the iPad, to which the iSXBlue II is sending the GPS signals.

Now, tap the GPS icon and select “Turn GPS off”. Select Main Menu – Setup then select GPS. In the GPS Setup screen, select “Enable the external GPS” then select “GNSS RECEIVER”. Set the threshold values as desired then tap on OK.

When you tap the GPS icon and select “Turn external GPS on”, a GPS status line should appear at the top of the screen, showing the number of satellites used, the PDOP value, etc. This indicates that the app is obtaining the GPS data directly from the external GPS/GNSS and not just getting the GPS position from the Apple CoreLocation.

2) With respect to the iSXBlue RTN NTRIP app, he asked, “I have this app and presume both your app and this one need to be open and running at the same time?”

RTK work means you are making use of the correction data sent out by a RTK network provider. Therefore, both the iSXBlue RTN NTRIP app and iCMTGIS PRO need to be open and running at the same time.

How can I make sure I’m capturing points meeting a PDOP threshold?

If you are using iCMTGIS PRO and an iSXBlue II or EOS Arrow GPS receiver, you can set the PDOP limit for GPS data collection as follows:

1. Turn off GPS from all apps on your iOS device.

2. Select Main Menu – Setup and mark the check box for “Enable the external GPS“.

3. Select the appropriate device protocol for the GPS receiver.

4. Tap on the pull-down arrow for PDOP Mask and select the desired PDOP Mask level. If you only want to record position data for which the elevation can be computed, then also mark the “3D Only” check box. Tap on OK to save the setting and close the screen.

5. Tap on the GPS icon then select “Turn external GPS on”.

Hi Please can I have the demo password for PC-GIS DEMO?

To try the PC-GIS DEMO program, please log on to http://www.cmtinc.com. Select “Downloads and Updates” then click on the PC-GIS DEMO link. The password for downloading and installing the demo program is:

FJ6UCCDD

(ALL CAPS)

Please log onto your desk-top computer as the administrator with full rights, and make sure there are no firewalls or any antivirus or anti-spyware programs that may interfere with the software installation. Should the installation stall for any reason, please try installing the software in Windows SAFE mode.

Context Help is provided for most functions. Under the Help icon in the PC-GIS DEMO program is a full on-line manual.

We also have a CMT GIS Training software program that we provide along with the PC-GIS program that you purchase. This is a voice-based training program that guides you step by step to complete a map.

The DEMO program provides many active functions, and will let you import Shape files and job files created by iGPSGIS II or iCMTGIS II, but it will not let you export or save the data. Also, a purchase reminder window pops up from time to time on the PC. You can drag that window to the side to continue working.

If you wish to purchase the PC-GIS software, please contact support@cmtinc.com and mention the name of your iOS app. PC-GIS 09 is compatible with iGPSGIS II and iCMTGIS II; PC-GIS X is compatible with iCMTGIS III, iCMTGIS PRO, Forester GPS GIS II/III, Farming GPSGIS II/III and Utility Data Collection.