readAreas function

help file for creating SpatialPolygonsDataFrame with observations and/or predictionLocations of data with a spatial support

readAreas will read area-files, add observations and convert the result to

SpatialPolygonsDataFrame

readAreas(object, adir=".",ftype = "xy",projection = NA, ...)

Arguments

• object: either name of file with areal information or SpatialPointsDataFrame

  with observations

• adir: directory where the files with areal information are to be found

• ftype: type of file, the only type supported currently is "xy", referring to x- and y-coordinates of boundaries

• projection: add projection to the object if input is boundary-files

• ...: further parameters to be passed to readAreaInfo

Returns

The function creates a SpatialPolygonsDataFrame of observations and/or predictionLocations, depending on the information given in object.

Details

If object is a file name, readAreaInfo will be called. If it is a

SpatialPointsDataFrame with observations and/or predictionLocations, the function will read areal data from files according to the ID associated with each observation/predictionLocation.

The function is of particular use when data are not available as shape-files, or when the observations are not part of the shape-files. This function is mainly for compatibility with the former FORTRAN-version. The simplest way to read the data in that case is through st_read. See also rtop-package.

Author(s)

Jon Olav Skoien