transform_xy {gdalraster}

Transform geospatial x/y coordinates

Description

transform_xy() transforms geospatial x/y coordinates to a new projection.

Usage

transform_xy(pts, srs_from, srs_to)

Arguments

pts

A two-column data frame or numeric matrix containing geospatial x/y coordinates.

srs_from

Character string in OGC WKT format specifying the spatial reference system for pts.

srs_to

Character string in OGC WKT format specifying the output spatial reference system.

Value

Numeric array of geospatial x/y coordinates in the projection specified by srs_to.

See Also

epsg_to_wkt(), srs_to_wkt(), inv_project()

Examples

pt_file <- system.file("extdata/storml_pts.csv", package="gdalraster")
pts <- read.csv(pt_file)
print(pts)
## id, x, y in NAD83 / UTM zone 12N
## transform to NAD83 / CONUS Albers
transform_xy(pts = pts[,-1],
             srs_from = epsg_to_wkt(26912),
             srs_to = epsg_to_wkt(5070))