bd2gcj: Convert coordinates

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

View source: R/cst.R

Description

converts lat/lon coordintes from BD-09 to GCJ-02

Usage

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bd2gcj(bdLat, bdLon)

Arguments

bdLat

a numeric latitude in BD-09

bdLon

a numeric longitude in BD-09

Details

BD-09 coordinate system is used by Baidu Maps and further encrypted based on GCJ-02 coordinates.

Value

a data.frame with variables lat/lng

Author(s)

Jun Cai ([email protected]), PhD candidate from Department of Earth System Science, Tsinghua University

See Also

gcj2bd, conv.

http://blog.csdn.net/coolypf/article/details/8569813 for C version source code.

Examples

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## Not run: 
# latitude/longitude coordinates of Beijing railway station
# GCJ-02: (39.90245, 116.42703)
# BD-09:  (39.90851, 116.43351)
bd2gcj(39.90851, 116.43351) # correct
# convert multiple coordinates
bd2gcj(c(40.00541, 39.99299), c(116.3330, 116.3124))

## End(Not run)

caijun/geoChina documentation built on May 11, 2017, 9:52 p.m.