HK1980GRID_TO_HK80UTM: Convert HK1980GRID coordinates to HK80UTM coordinates
In helixcn/HK80: Conversion Tools for HK80 Geographical Coordinate System

Description Usage Arguments Details Value Note Author(s) References See Also Examples

View source: R/HK1980GRID_TO_HK80UTM.R

Convert HK1980GRID coordinates to HK80UTM coordinates

1	HK1980GRID_TO_HK80UTM(N, E)

`N`	Numeric, Northern coordinate in meters
`E`	Numeric, Eastern coordinate in meters

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

`N`	Northern coordinate in meters
`E`	Eastern coordinate in meters
`zone`	UTM zone number, either 49 or 50

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

Jinlong Zhang

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

HK80UTM_TO_HK1980GRID

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