# WORKING ON A LOCAL GRID HYPACK 2013.

## Presentation on theme: "WORKING ON A LOCAL GRID HYPACK 2013."— Presentation transcript:

WORKING ON A LOCAL GRID HYPACK 2013

In HYPACK® … GPS Surveying on WGS-84? Lat-Long on WGS-84 Datum
RS-232 Surveying on WGS-84? Lat-Long on WGS-84 No Datum Transformation Yes Grid Conversion Lat-Long on Local Datum X-Y on Projection Local Grid Conversion Local Grid Click me! X-Y on Local Grid

Working on a Local Grid Point 1 Point 2 UTM X 562,000.000 563,000.000
You need two points in your area where you know: X-Y on your Local Grid X-Y on a normal HYPACK® Project Grid, such as UTM, State Plane, UKNG, etc. Point 1 Point 2 UTM X 562, 563, UTM Y 3,245, 3,246, Local Grid X 10,000.00 10, Local Grid Y 11,

GEODETIC PARAMETERS: Setup for Local Grid
Set GEODETIC PARAMETERS to a Grid/Zone that HYPACK knows about (e.g.: UTM). Next, change the ‘Grids’ entry to “None”. Click the ‘Local Grid Adjustment’ check box and then the ‘Local Grid’ button.

LOCAL GRID: Window Enter the ‘World’ and ‘Local’ coordinates, select your origin and have the program compute the rotation, translation and scale.

Local Grid: Example Point 1 Point 2 UTM X 562,000.00 UTM Y
3,245,000.00 Local Grid X 10,000.00 Local Grid Y Point 2 UTM X 563,000.00 UTM Y 3,246,000.00 Local Grid X 10, Local Grid Y 11,

Checking it in GRID CONVERSION
Point 1 UTM Zone 17. X = 562, Y = 3,245, UTM Lat-Long: Lat = N29° ’ Lon = W80° ’ Local Grid Coordinates X = 10, Y = 10,