Convert the HK80GEO coordinates to WGS84UTM coordinates

Convert the HK80GEO coordinates to WGS84UTM coordinates

HK80GEO_TO_WGS84UTM(latitude, longitude)

Arguments

latitude	latitude in decimal degrees
longitude	longitude in decimal degrees

Details

This function convert the HK80GEO coordinates to HK80UTM, and convert the intermediate output into WGS84UTM. More details can be found on page C4.

Value

N

Northern coordinate in meters

E

Eastern coordinate in meters

zone

UTM zone, either 49 or 50

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

Author

Jinlong Zhang

Note

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

See also

WGS84UTM_TO_HK80GEO

Examples

options(digits = 15)
HK80GEO_TO_WGS84UTM(22.323701767, 114.138734989 )
#>                  N                E zone
#> 1 2471278.72895382 205493.220909862   50
#### $N
#### [1] 2471278.72895382
#### 
#### $E
#### [1] 205493.220909862
#### 
#### $zone
#### [1] 50

################################################
#### Answer from the online conversion tool 
#### 50Q, 2471279, 205494