convert_crs: Conversion to a New Coordinate Reference System
In farinoushsharifi/TransGPS: Easy Analysis of GPS Data

Description Usage Arguments Value Examples

Convert the coordinates of the recorded GPS data in an initial CRS to any desired CRS

1	convert_crs(LatList, LongList, InitProj, NextProj = NULL)

`LatList`	A vector of size n for latitudes collected from a GPS recording device
`LongList`	A vector of size n for longitudes collected from a GPS recording device
`InitProj`	A character string of initial projection arguments; the arguments must be entered exactly as in the PROJ.4 documentation
`NextProj`	(Optional) A character string of final projection arguments; the arguments must be entered exactly as in the PROJ.4 documentation (if `NULL`, the OpenStreetMap projection will be assumed)

convert_crs return a list of 2 vectors of size n for the converted latitude and longitude

LatList <- c(45.86880,45.86887,45.86924,
45.87158,45.87014,45.86923,45.86808,
45.87177,45.87020,45.88010)

LongList <- c(7.173500,7.172540,7.171636,
7.180180,7.178070,7.177229,7.175240,
7.181409,7.179299,7.172235)

InitProj <- "+init=epsg:4326"

#converts the GPS coordinates to OSM CRS
convert_crs(LatList,LongList,InitProj)

NextProj <- "+init=epsg:4121 +proj=longlat +ellps=GRS80
+datum=GGRS87 +no_defs +towgs84=-199.87,74.79,246.62"

#converts the GPS coordinates to a selected projection
convert_crs(LatList,LongList,InitProj,NextProj)