Some GPS/GNSS receivers compatible with iPad and iPhone devices

Recently Geneq Inc. announced their new SXBlue Platinum GNSS receiver.

As you know, the accuracy of the work performed using an iOS GPS/GIS app depends on the GPS receiver used. The assisted GPS provided by the iOS devices are not adequate for serious work that are based on accurate locations. External GPS receivers with much better precision abound, but only a limited number of them are compatible with the iOS devices. Following are links to information on some of the external Bluetooth GPS/GNSS receivers that can work with iPad and iPhone devices. Not sureprisingly, higher precision equates to a higher price tag.

http://www.sxbluegps.com/product/platinum/

http://www.eos-gnss.com/arrow-gold-safertk-gnss/#1457391744922-32431e8d-bc6aef4f-4b59

http://gps.dualav.com/explore-by-product/xgps150a/

https://bad-elf.com/pages/be-gps-2200-detail

https://buy.garmin.com/en-US/US/p/109827#specs

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Question about the GPS marker

“I also use the program to locate plots to take sample points. With the current cursor on the program you cannot see the points on the background map. Is it possible to change the cursor to be transparent or a cross hair to see the points on the map?”

The GPS marker in the iCMTGIS-series apps serves a few purposes. When GPS is turned on, it indicates your position. If you walk at a brisk pace, the arrow inside the circle will point in the direction you are walking. The arrow in the GPS marker will be a gray color when your speed is very slow (e.g. less than 1 m/s). The arrow will change to a red color when your speed is above 1 m/s. The direction of the arrow indicates your current direction. There is not a way to change this marker symbol.

You could try zooming into the map and enlarging the point symbol size. The GPS marker will stay the same size and will therefore become smaller compared to the background elements.

Which product best fits our needs?

“I’m browsing through your website and trying to figure out which product best fits our needs. We run a farming operation that deals with fields of many shapes and sizes. We’re looking for an easy to use solution. Here is our wish list:

1. Non-expensive
2. Integrates with iPhone or iPad
3. Exportable to PC to overlay on Google Maps or other mapping software
4. Sub meter accuracy

Would you be able to point me in the right direction?”

Items 1 and 4 on your wish list are related. The greatest expense you will incur is in the GPS receiver. GPS with sub-meter accuracy cost a lot more than consumer-grade GPS with 2 – 5 m accuracy. The EOS Arrow Gold and the iSXBlue II+ GNSS provide sub-meter accuracy.

Our iCMTGIS III GPS/GIS data collection and mapping app will run on iPhone and iPad devices. It provides the ability to export Feature data as a .kml file that you can upload to Google Earth and Google My Maps. It will also export Feature data in Shapefiles format and DXF file format. Many GIS software provide the ability to import Shapefiles. So does our PC-GIS X mapping software, which will also work with the Job files you created by using iCMTGIS III.

(Farming GPS GIS III provides similar functionality as iCMTGIS III, but it will only run on iPad devices.)

How to determine the direction of a straight line in iCMTGIS PRO?

Line Segment Label

A number of our apps provide a function in the Feature Properties screen for labeling a line segment. In some apps, such as iCMTGIS III and iCMTGIS PRO, after selecting the line segment, you would tap on the “Show Label” tab then mark the check box for “Show Segment label“. In some other apps, such as Wetland – Stakeout and Deed Calls Pro, the “Show Segment label” check box is in the main Feature Properties screen.

With the Angle System set to “Bearing“, the line segment label will show something like SE. This indicates that the line is pointing to southeast.

iCMTGIS III and iCMTGIS PRO also provide the View Deed Calls function. In the Deed Calls screen, the starting node of the active line segment is indicated with a green node. In addition, the bearing of the straight line segment is displayed under Calls.

How do I label a point shape with its name?

A number of our apps provide the Auto Label function.

Please tap the Topic View icon (the second icon from the right side) then select the Point Topic of interest.

Now tap the Topic Menu icon (the second icon from the left side) then select the Auto Label function and use it to label all the points on the selected Topic layer with the Topic Name and Feature ID.

If you have Attributes defined for the selected Point Topic, you could select those as well for labeling the points.

If you add another Attribute later, then please first delete the existing labels then redo the Auto Label.

If you add a new Feature to the same Topic layer, then please execute the Auto Label again to update the labels.

How to delete Jobs and Features in CMT GIS PRO?

“First—wondering how to delete jobs in cmtgis pro is I can start over fresh. Just go to iTunes and delete the files in the file sharing are??? Same with Features. Not sure how to edit or delete features in the feature list or edit attributes once the feature has been created.”

1. Yes, to delete an entire Job, please connect your iOS device with iTunes, select the Job files in the File Sharing area for the app, then click the Delete button on your PC keyboard.

2. The Feature List is made up of three main sections. To delete an entire Feature Topic, select that record under “Feature” then tap on the Delete button. To delete an Attribute for the selected Feature Topic, select that Attribute then tap the Delete button. To delete an assigned Value for the selected Attribute, select that Value record then tap the Delete button.

To edit an Attribute, first select it then choose the type. If it is of the “List” type, you can tap the Value section then tap the Add button to add one or more Values to assign to the Attribute. If you wish to assign specific symbols or patterns to the Values, then mark the “Activate Pattern” check box. Please see the built-in Help document for details.

How to change the shape of a Line or Area Feature

A number of our iOS apps provide the Move Node function. A couple apps also provide the Insert Node function.

When you use Move Node to move a node of a Line or Area Feature, the shape will be changed. Beware, though, that there is not an undo function for Move Node. If you change your mind, you will need to manually move the node back to its original position or as close to it as possible.

The Insert Node function provides additional flexibility to change the shape of the Line or Area Feature. You can add additional nodes between two existing nodes and move the nodes to approximate the desired shape.