Charges on apps sold via the Apple App Store

“I bought this program and no longer need it and want to remove the future charge to my credit card, can you please respond with the procedure to do this.”

The software license for the Deed Calls & Stakeout app is a one-time purchase. Same with all of our other apps. There should be no future charge to your credit card for this app.

Our iOS apps are sold via the Apple App Store, and we do not deal with sales and payments. If you still have concerns, please contact the App Store.

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App for verifying survey drawing and recording building corners

“I have a survey drawing of my property and my property has metal stakes at the corner. I would like to verify the survey drawing to the stakes. I also would like to identify where the corners of my home is located on my property. What would be the best software for these requirements?”

Our Deed Calls function will let you enter bearing and distance information from your survey drawing to generate a plot in the app. You will need to know the coordinates of the point of beginning in order to correctly place the plot on the map.

Our Stakeout functions will help you get to a point or node (where the stake is supposed to be).

These functions are provided in a few of our apps, such as Deed Calls & Stakeout, iCMTGIS III and iCMTGIS PRO.

iCMTGIS III and iCMTGIS PRO also provide GPS data collection functionality that will let you record the corners of your home or any other points, lines and areas.

The important issue is what compatible GPS receiver to use to meet the degree of accuracy that you need. The GPS on iOS devices are good to about 10 meters.

GIS-grade GPS like the Bad Elf GPS and the Dual XGPS-150A claim 2 – 5 meter accuracy. You could use a GIS-grade GPS and Deed Calls & Stakeout to roughly check the stake locations against the drawing.

Survey-grade GPS devices from EOS and Geneq are quite expensive. You might be able to rent an iSXBlue Platinum or an EOS Arrow from a supplier to use with iCMTGIS PRO for best accuracy in stakeout and recording GPS points.

App for fencing property

“I am trying to find a app that I can use to find property corners and go from one corner to another in a straight line ( for fencing ) I have good surveys and legal descriptions to enter for my property. I would like to use my IPhone for this.”

With the legal descriptions and the coordinates of the point of beginning, you could create a deed plot in the Deed Calls & Stakeout app then use the Line Stakeout function to help you walk along the boundary line to find the property corners.

Now, the iPhone GPS is accurate to about 30 ft. An external GIS-grade Bluetooth GPS, such as the Dual XGPS-150A or a Bad Elf GPS, usually claims 2 – 5 meters accuracy (about 6 to 15 ft). You will need better accuracy for fencing a property boundary. You could use iCMTGIS PRO in conjunction with a high-precision GNSS receiver (such as a SXBlue Platinum or an EOS Arrow). The high-end GNSS receivers are very expensive. There are places that rent them out. You might check with them to see if the total cost justifies the one-time use.

What to do when deed description does not provide bearing information

       EXAMPLE FOR CALCULATING BEARING FROM INTERNAL ANGLE

A Deed Calls & Stakeout user is baffled by an old property description that refers to a stretch of a certain road and specifies internal angles instead of bearings. He is able to stand at the point of beginning and obtain the approximate GPS coordinates for it.

Applying the Measure Distance function on the displayed Map, we were able to get the approximate bearing of the road segment. Then calculating the bearings for the remaining calls becomes an exercise in geometry and Deg-Min-Sec angle arithmetic operations. The bearing of each leg will need to be computed by using the bearing of the previous leg and the internal angle provided in the deed description. One will need to keep in mind that there are 60 minutes in a degree and 60 seconds in a minute.

As the bearing of the first leg determined by Measure Distance refers to true north, you can set the value of the Orientation field to 0.

The resulting deed plot can only be used as a rough reference as there are several sources of error:

1) The point of beginning may be at the wrong location as the user may not have used a high-precision GPS receiver to record the position.

2) The bearing of the road segment obtained from Measure Distance may be slightly off.

3) The printed value for one of the angles is partially illegible.

4) There may be some error in the old survey data, resulting in a closure error of about 11 ft.

Using the Measure Area tool, we see that the area comes close to the published value.

App for stakeout and data collection

“I have researched a number of your available apps, and would like your input on which would be most useful for basic point/line/polygon stakeout and data collecting…..I usually receive staking requests from our engineers with PLSS information and footage calls. Often there is an attached KMZ from which I can grab geodetic information. Are any of your apps capable of working with NAD83 State Plane coordinates? And which one would be best for importing data into a job?”

Based on what you write, we understand that you would like to be able to

1) work with NAD83 State Plane coordinates

2) use GPS to record point, line and area features and collect data for the features

3) stake out point/line/polygon using GPS

4) enter coordinates for the point of beginning and enter deed calls

5) import data into a job

6) do survey quality work.

The combination of the iCMTGIS PRO app for iPad and iPhone devices and either the SXBlue Platinum or the EOS Arrow Gold high-precision GPS receiver is what other users are using for this type of work. Our app provides the functionality that you are looking for, but it is the GPS receiver that determines the accuracy of your work.

iCMTGIS PRO will let you import data as Shapefiles, Excel file, DXF and KML. It will also let you import Point data into a Topic layer via a text file.

Will Stakeout iCMT use the external GPS?

“I am using an iPad. Does Stakeout use the gps in the iPad or can it get it directly from the Arrow?”

When an iOS compatible GPS receiver is turned on and connected to the iPad, it will automatically override the built-in GPS to update CoreLocation. When you toggle GPS on in an app like Stakeout iCMT, the app will grab the position data from CoreLocation. In other words, the app uses the Arrow GPS data indirectly.

Of the various CMT apps, only iCMTGIS PRO provides the ability to get the GPS data directly from the Arrow and the iSXBlue GNSS receivers. In the “Enable the External GPS” mode, iCMTGIS PRO will read the NMEA data directly from these GPS receivers.

Entering a Deed Call

“I have my property description with dms angles and I bought the deed calls app. I am having trouble figuring out how to use it. It looks like the description runs the opposite way the app lets me put in the calls.”

Before entering your property description, you would first set the Angle Unit to be DMS and the distance unit to be Survey Feet. Select “Bearing” for the angle system.

Did you enter the coordinates of the point of beginning? Please also enter the magnetic declination in the “Orientation” field.

When entering the deed calls, make sure to specify the correct bearing. If you entered E instead of W, that will cause the line to run in the opposite direction.