Pocket Elevation Surveyor



This app surveys the elevation of 120 points of a grid centered on a remote map location chosen by the user, or their actual GPS position.

All points downhill from the observer are shown in blue, uphill points in green. The lighter the shade of blue, the higher the elevation. The darker the shade of green denotes lower elevation.

Other points about the same elevation as the observer are marked in red.

The elevation survey can be done in three scales, small, medium *the default) and large. The scale can be changed by clicking the chosen S, M, or L button before the survey begins.

The grid for the small setting is about 1/2 mile x 1/2 mile for an area of 1/4 square mile. The default medium setting is about a mile wide and a mile tall, with an area of about 1 square mile. The large setting is about 2 miles to a side with an area surveyed of about 4 square miles.

Surveys can be for a remote location or actual GPS position.

The remote option calculates the elevations around a point selected om the map. Enter the address into the Edit Box, perhaps by using the Voice Input feature, and then wait a moment while the geocoder searches for the latitude and longitude coordinates of that location. The app will then zoom to a map centered on the location you specified.

The GPS option allows for surveying around one's actual position.

When the map is centered properly and the scale is selected, then click the begin button at the top. Completing the survey may take a minute or two.

The icon on the right that looks like a car toggles between the satellite view and the road map view. It may be easier to read the elevation values with the road map view selected.

The result overlay also marks the highest and lowest points within the area surveyed by green and blue squares respectively.

After the survey is completed, you can click the Read Log button to see a brief summary of the results.

The app currently only works for the USA and not for Canada or elsewhere.

For the app to be zoomed to one's actual location, the phone Location settings must have Satellite enabled. Establishing the GPS satellite connection may take a moment or two. The app will not run in the real location mode until the connection is stable.

After you are finished using the app, it is a good idea to turn off the Satellite tracking because uses up the battery faster.




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