R: Extract Latitude and Longitude from WKT polygons

wkt_coords {wicket} | R Documentation

## Extract Latitude and Longitude from WKT polygons

### Description

`wkt_coords` extracts lat/long values from WKT polygons, specifically the outer shell of those polygons (working on the assumption that said outer edge is what you want).

Because it assumes coordinates, it also assumes a sphere - say, the earth - and uses spherical coordinate values.

### Usage

    wkt_coords(wkt)

### Arguments

`wkt` | a character vector of WKT objects

### Value

a data.frame of four columns; `object` (containing which object the row refers to), `ring` containing which layer of the object the row refers to, `lng` and `lat`.

### See Also

`wkt_bounding` to extract a bounding box, and `wkt_centroid` to extract the centroid.

### Examples

    wkt_coords("POLYGON ((30 10, 40 40, 20 40, 10 20, 30 10))")
    # object  ring lng lat
    # 1    1 outer  30  10
    # 2    1 outer  40  40
    # 3    1 outer  20  40
    # 4    1 outer  10  20
    # 5    1 outer  30  10

[Package wicket version 0.4.0 Index]