HK1980GRID_TO_HK80UTM {HK80}

Convert HK1980GRID coordinates to HK80UTM coordinates

Description

Convert HK1980GRID coordinates to HK80UTM coordinates

Usage

HK1980GRID_TO_HK80UTM(N, E)

Arguments

N

Numeric, Northern coordinate in meters

E

Numeric, Eastern coordinate in meters

Details

This function converts the HK1980GRID coordinates into HK80GEO coordinates (latitude and longitude) first, and converts the later into HK80UTM coordinates.

Value

N

Northern coordinate in meters

E

Eastern coordinate in meters

zone

UTM zone number, either 49 or 50

Note

The coordinates should be within the range of Hong Kong. Providing coordinates outside Hong Kong will lead to wrong results.

Author(s)

Jinlong Zhang

References

Survey & Mapping Office Lands Department, Hong Kong Government (1995). Explanatory Notes on Geodetic Datums in Hong Kong, available at: http://www.geodetic.gov.hk/smo/gsi/data/pdf/explanatorynotes.pdf

See Also

HK80UTM_TO_HK1980GRID

Examples

##### This function was not tested since 
##### the conversion is not available on the manual nor online.
options(digits = 15)
HK1980GRID_TO_HK80UTM(832699, 836055)