gmt-package {gmt}

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 R and call GMT commands to draw and annotate maps in postscript format.

Details

Initialize GMT session:

gmt	set graphical parameters and postscript file

Create a map:

pscoast	draw
psxy	annotate
pstext	annotate
psbar	annotate
psclose	finalize

Convert and calculate:

deg2num	degrees to numeric
geodist	distance between coordinates
num2deg	numeric to degrees

Examples:

demo.par, demo.coast, demo.xy, demo.text, demo.bar

strings and data frames to create example map

Internal:

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.

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 R console.

Author(s)

Arni Magnusson.

References

Wessel, P., Smith, W. H. F., Scharroo, R., Luis, J. and Wobbe, F. The Generic Mapping Tools: GMT documentation. Available at https://docs.generic-mapping-tools.org.