Function for importing the contents of a CNT file into R

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Description

This function reads and imports into R the contents of a polygon centroid information file.

Usage

1
get.cntdata(datadir, coverage, filename="cnt.adf")

Arguments

datadir

Directory under which all the coverages and a directory called 'info' are.

coverage

The name of the coverage we want to work with.

filename

The name of the file in the coverage directory that stores the data (usually called 'cnt.adf').

Value

This functions returns a list with two elements. The first one is a data frame with the next fields (columns):

PolygonID

The polygon itself.

CoordX

An array with the X coordinates of the centroid.

CoordY

An array with the Y coordinates of the centroid.

NLabels

The number of labels this polygon has.

The second element in the list is an array with the label identifiers related to this polygon.