Contour – Volume – Stakeout app released

Contour Map on iPad

Contour Map on iPad

A number of customers asked for the ability to generate a contour map from the elevation data in their GPS/GIS mapping job. We are pleased to announce the release of the Contour – Volume – Stakeout app for use on an iPad, iPhone or iPod touch.

In fact, you can use Contour – Volume – Stakeout to produce a contour map not just for elevations but also for any other numeric variable of interest. If you have a high-accuracy GPS receiver, you could use this app to draw elevation contour lines, make a colored contour region map, and compute earth volumes based on the contours.

If you have sample data collected for a certain variable (such as population or soil pH values) over an area, then you could use this app to produce a contour region map to show the variation of the variable over the area. For example, a contour map of nitrogen content could serve as a guide in fertilizer application.

Contour – Volume – Stakeout provides Point Stakeout and Line Stakeout functions to help you approach a point or move along a line or area boundary.

This app also provides functions for precisely digitizing Points, Lines and Areas over the built-in Map and for viewing their locations, lengths and areas. If your device has GPS capability, you may record the GPS location as a Point, or pick the GPS location as a node for the Line or Area you are creating. Location and elevation accuracies depend on the accuracy of the GPS receiver used.

Please keep in mind that the accuracy in elevation data obtained from a GPS receiver is generally about three times worse than the accuracy for locations on a horizontal plane. Therefore, to contour the elevation data recorded by a GPS receiver, you will want to get the most accurate GPS receiver you can afford to purchase and that is compatible with your iOS device. There are a few brands of external GPS receivers that can work with iPad and iPhones. Garmin Glo, Dual XGPS 150A and the Bad Elf GPS offer about 1 – 3 meters accuracy in the horizontal plane. The iSXBlue II provides sub-meter accuracy (and is much more

The contour map can be printed to PDF. The contour data can be exported in a text file format. The Feature data can be exported in Shapefiles and DXF formats.

Detailed Function List:

* Import Shapefiles, DXF files and text files.
* Create a grid and generate sampling points.
* Precisely digitize Points, Lines and Areas over the built-in Map.
* Use Point Stakeout and GPS to locate a point or a node on a line.
* Use Line Stakeout and GPS to locate a line.
* View position, length and area values for the Features.
* Label the Lines with segment lengths and directions as well as corner angles.
* Label the Areas with size in acres and square feet or hectares and square meters.
* Measure distances and areas without saving the shapes.
* Move existing nodes to fine-tune the map drawing.
* Create a Point from entered coordinates.
* Create a Point or record a node by picking the GPS location.
* Save the job data file for later use.
* Export Feature data to DXF or Shapefiles.
* Export the contour data to a .CSV text file.
* Output the drawing and the coordinates to PDF.
* Email the job data files and the PDF files to your colleagues.

This app comes with a detailed built-in help document.

You can now purchase and download this app from the Apple App Store.

The press release of this app can also be found at the following sites:



4 Responses to Contour – Volume – Stakeout app released

  1. Brett Angelo says:

    How so I bring a dxf file from email directly to app without iTunes?

  2. Brett Angelo says:

    How do I transfer dxf files in the field directly from email into app without a PC???

    • cmtinc says:

      Hi Brett,

      The Contour – Volume – Stakeout app does not provide the ability to bring a DXF file in from an email.
      You will need to go via iTunes to do so.

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