gmt-package: Interface between the GMT Map-Making Software and R
Description
Interface between the GMT map-making software and R, enabling the
user to manipulate geographic data within Rand call GMT commands to
draw and annotate maps in postscript format.Details
Initialize GMT session:
ll{
gmt set graphical parameters and postscript file
}
Create a map:
ll{
pscoast draw
psxy annotate
pstext annotate
psbar annotate
psclose finalize
}
Convert and calculate:
ll{
deg2num degrees to numeric
geodist distance between coordinates
num2deg numeric to degrees
}
Examples:
ll{
demo.par, demo.coast,
demo.xy, demo.text,
demo.bar strings and data frames to create
example map
}
Internal:
ll{
gmt.system, r2gmt helping functions
}
This package provides functions to draw basic maps with GMT, along
with helping functions that can be used to add more advanced features
to a map.
It supports GMT version 4.0 and higher, and has been tested in Windows
and Linux.
GMT users typically write shell scripts to draw maps. The gmt
package is about interactive data analysis, rapidly visualizing
subsets and summaries of geographic data, while performing statistical
analysis in the Rconsole.References
Wessel, P. and W.H.F. Smith. The Generic Mapping Tools:
Technical reference and cookbook. Available at
http://gmt.soest.hawaii.edu/gmt/doc/gmt/pdf/GMT_Docs.pdf.See Also
Other packages that can be used to draw maps include: GRASS,
maps, PBSmapping, and spgrass6.