LEAST SQUARES ARC

Calculate a least squares fitted arc from a text file of coordinates you place on your device's storage.  The least squares fit is achieved by finding center coordinates h, k, and radius r that minimizes the following sum:

 

INCLUDE / EXCLUDE POINT

Select point from list, check to include or exclude point, and recalculate solution. (See Below)

CHANGE WEIGHT

Select point from list to change to desired weight and recalculate solution. (See Below)

FEATURES

 

COORDINATE FILES

App scans phone storage to locate all files that meet the PNEZD point format (comma delimited file - Point Number, Northing, Easting, Elevation, Description)  Select desired PNEZD formatted point file from list for initial calculation.  (See Below For Point File Format Example)

EXAMPLES

 

CIVIL-SURVEY applications

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PNEZD COMMA DELIMITED POINT FILE FORMAT