Shapefiles for Chile shows up in North America

“We update de FORESTER GPS GIS II, on iPad from version 1.0.1 to 1.0.2 and we are having issues with the coordinate system when importing a shape file.The shape appears in North América and we are from Chile. We use UTM with Datum WGS84. Is there any suggestion on what can we do. I try this in two different devices with the new version and both have the same problem. When using it in the 1.0.1 version all goes OK.”

Please make sure you have selected the correct UTM Zone.

Please also copy the .prj file for the Shapefiles to the documents folder for Forester GPSGIS II.

What coordinate system do the Shapefiles use? If they are based on WGS 84 LLA, then try setting the Forester GPSGIS II to that coordinate system before importing the Shapefiles. After importing the Shapefiles, then change the coordinate system to UTM WGS84.


How to enter coordinates into the Stakeout iCMT app

“I am trying to enter a GPS coordinate into the stake out program, and I am getting some weird results. For some reason the coordinates that I have taken off of google earth are taking me to some point in Inner Mongolia instead of Silverton Oregon. I am using the same format of Degrees, Minutes, Seconds. Could you please tell me what I’m doing wrong?”

Which function are you using to enter the coordinates. If it is the “Locate a Point by Address” function, please make sure to specify the correct E, W, N, S designation.

Another way to enter the coordinates is to get the map for your approximate location displayed then use “Add Point manually” to add a point to the map. Then open the Feature Properties screen for that point and change the coordinates to the desired values.

Do I need cellular data for the app to work?

We received this question regarding the Deed Calls & Stakeout app, but the answer applies to our other apps as well.

The GPS data collection functions and most of the other functions will work without wi-fi and cellular data.

Some of our apps, like Forester GPS GIS III, Farming GPS GIS III, iCMTGIS III and iCMTGIS PRO will let you load a geo-referenced *.tif map and use it off-line.

Most of our apps provide a Map function to get and display the Map from Apple via wi-fi connection. However, you can cache the Map to use out there where no wi-fi is available. This means that you can call up the Map and display the area in which you will be working, turn off wi-fi then go out in the field. You will be able to view the Map while working with your app. As long as you do not play with the Map function while you are out there (such as switching from Show Satellite to Show Hybrid) or close Map, the background map should remain available.

Any Android apps?

An SXBlue dealer wrote:”I am a MAC user, but really prefer Android as a mobile OS. Got a lot more Android interest in the last 12 months than I do iOS interest.”

Yes, we have also received many inquiries about Android apps. However, at this time we do not have plans to develop apps on yet another platform. Currently, we have software for Windows, Windows Mobile/ Embedded Handheld 6.5 and iOS.

Recording property lines

“I have recently purchased a 19 acre field/forest and have a new survey PLAT with freshly marked property pins. I would like to permanently record the data points onto a GPS device such as an iPhone for when the markers are removed (to install fences, argue with neighbors over hunting areas, etc.). I need the app to be able to guide me between the pins while walking with the GPS.”

For your intended use, you will need a high-precision GPS receiver. The GPS built into the iPhone is good to about 30 ft or worse in some situations. This is in adequate for settling arguments between neighbors.

The Deed Calls and Deed Calls & Stakeout apps are for drawing the deed plot by entering the deed calls (bearing and distance information). The Deed Calls & Stakeout app will then be able to guide you along this deed plot. To correctly place the plot on the map on the iPhone, you will need to have the GPS coordinates for the first point. These two apps do provide a “Pick GPS” button for you to grab one GPS fix. However, it will be an approximate position if you are just using the iPhone built-in GPS.

As you want to record the positions of the stake points and also be guided to walk between the pins, the system to use is a high-precision GPS receiver like the iSXBlue II+ GNSS or the EOS Arrow Gold with an iPhone or iPad running iCMTGIS III or iCMTGIS PRO. The iCMTGIS III and iCMTGIS PRO apps will let you record a position by taking many GPS fixes and averaging them. They will also let you record an irregular property boundary by walking along the boundary. They provide the Point Stakeout (to guide you to the pins later) and Line Stakeout functions (for guiding you along the property boundary later). They also provide the Deed Calls functionality.

In summary, it boils down to the desired accuracy. Using an iPhone running Deed Calls or Deed Calls & Stakeout app might be adequate for a realtor or a forester (to do a quick approximate deed plot). Deed Calls & Stakeout is useful for someone who needs to find old stakes based on a deed plot. To record accurate stake positions, you will definitely need a much better GPS than the iPhone GPS. If you can accept a 2 m – 5 m (6 ft – 15 ft) error, then you could consider using the less expensive Dual XGPS-150A or Bad Elf GPS.

Which EOS GPS receiver to get?

Please refer to the comparison chart at the following link:

Finding iron markers

“I just purchased a home, and I have the plat and pretty much all the information I need to find the iron markers for my property line. But I am having trouble finding them. I know where the two front posts are. I was wondering if your app would help me go from the front of my property to the backs markers. And which app I should use.”

If all you need is to find the other iron markers, the Deed Calls and Stakeout app will do.

The Deed Calls functionality will let you get a GPS fix for the first point at the front of your property. It will let you enter the deed calls from your property description to draw a simple deed plot. Then you can select that deed plot as the target for the Line Stakeout function. The app will help you stay on the property line while walking. This should make it easier for you to find the iron stakes that are on the property line.

Please keep in mind that the GPS receiver on the iPhone is not that accurate. This means that in some cases you might need to search in a 500 – 1000 sq ft area for an iron stake when you are in the vicinity of that stake. You could use a consumer-grade GPS receiver such as the Dual XGPS-150A or a Bad Elf GPS with our app to narrow that area down to about 30 – 100 sq ft.