projInfo

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List PROJ.4 tag information

The projInfo function lists known values and descriptions for PROJ.4 tags for tag in c("proj", "ellps", "datum"); getPROJ4VersionInfo returns the version of the underlying PROJ.4 release, getPROJ4libPath returns the value of the PROJ_LIB environment variable, projNAD detects the presence of NAD datum conversion tables (looking for conus).

Keywords
spatial
Usage
projInfo(type = "proj")
getPROJ4VersionInfo()
getPROJ4libPath()
projNAD()
Arguments
type
One of these tags: c("proj", "ellps", "datum")
Details

The output data frame lists the information given by the proj application with flags -lp, -le or -ld.

Value

  • A data frame with a name and description column, and two extra columns for the "ellps" and "datum" tags.

Note

Loading the rgdal package changes the PROJ_LIB environmental variable to the PROJ.4 support files bundles with the package.

References

http://proj.maptools.org/

Aliases
  • projInfo
  • getPROJ4VersionInfo
  • getPROJ4libPath
  • projNAD
Examples
getPROJ4VersionInfo()
projInfo()
Documentation reproduced from package rgdal, version 0.7-7, License: GPL (>= 2)

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