R: Get a list of coordinates out of a KML file

getKMLcoordinates {maptools} | R Documentation

## Get a list of coordinates out of a KML file

### Description

This function parses a KML file to get the content of `<coordinates>` tags and returns a list of matrices representing the longitude-latitute or if `ignoreAltitude` is `FALSE` the longitude-latitute-altitude coordinates of a KML geometry.

### Usage

    getKMLcoordinates(kmlfile, ignoreAltitude=FALSE)

### Arguments

`kmlfile` | connection object or a character string of the KML file
`ignoreAltitude` | if set to `TRUE` the altitude values of a KML points will be ignored

### Value

`coords` is a list of matrices representing the longitude-latitute or if `ignoreAltitude` is `FALSE` the longitude-latitute-altitude coordinates

### Author(s)

Hans-J. Bibiko

### See Also

`kmlPolygon`, `kmlLine`

### Examples

    data(wrld_simpl)
    ## creates a KML file containing the polygons of South Africa (plus hole)
    sw <- slot(wrld_simpl[wrld_simpl$NAME=="South Africa",], "polygons")[[1]]
    tf <- tempfile()
    kmlPolygon(sw, kmlfile=tf, name="South Africa", col="#df0000aa", lwd=5,
        border=4, kmlname="R Test",
        kmldescription="This is <b>only</b> a <a href='http://www.r-project.org'>R</a> test.")
    zz <- getKMLcoordinates(tf, ignoreAltitude=TRUE)
    str(zz)
    zz <- getKMLcoordinates(system.file("shapes/Testing.kml", package="maptools"))
    str(zz)

[Package maptools version 0.9-3 Index]