get.paldata: Function for importing the contents of a PAL file into R
In RArcInfo: Functions to import data from Arc/Info V7.x binary coverages

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

1	get.paldata(datadir, coverage, filename="pal.adf")

`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. By default, it is called 'pal.adf'

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

`PolygonID`	A number that identifies this polygon.
`MinX`	Minimum value for all the X component of the coordinates.
`MinY`	Minimum value for all the Y component of the coordinates.
`MaxX`	Maximum value for all the X component of the coordinates.
`MaxY`	Maximum value for all the Y component of the coordinates.
`NArcs`	?

The second element in the list is also a list in which each element is composed by three arrays with information about the polygons that are in the polygon boundary: 'Arc ID', 'From Node' and 'Adjacent Polygon'.

RArcInfo documentation built on May 1, 2019, 10:26 p.m.