Obfuscate GPS Lat/Long Coordinates

[keenanjohnson]

In Discussion 27 in the Dashboard Repo, we discussed that the GPS Latitutde and Longitude coordinates should be truncated or obfuscated.

This has two big benefits:

• It allows privacy protection for the installer of the Frog sensor, as it will not be possible for someone to precisely determine the location of the sensor.
• Another advantage to "snapping" sensor locations to a 0.01 degree (or whatever level of precision) grid, is that we won't have to see location drift as the GPS quality changes over time.

For some context about spatial resolution and location precision, NOAA's High-Resolution Rapid Refresh (HRRR) model which is used to make those smoke maps you may have seen, is at 3 km spatial resolution. Another high resolution data product is NASA/ORNL's DayMet which is 1 km spatial resolution. To get 1 kilometer spatial resolution, that is about 0.01 degrees of precision.

This change is to round the latitude and longitude coordinates to 0.01 degrees or precision (2 decimal places)

[keenanjohnson]

I've just deployed this change. You can see that the coordinates are rounded: