rmap man page

rmap — Map portions of the earth from long/lat info

Synopsis

  rmap --cities --zoom=20 --category=all --yrot=-120 
       --xrot 35 --continent=all --outfile=south_california.gif

Description

This manual page documents the utility rmap.  rmap is a small utility that goes against a  custom format of the CIA's world data bank II global vector information to generate  images of the earth from either a distance fairly zoomed in.  There are a variety of options to control the display of the image.  The format of the image depends on the version of libgd that you have.  Older versions generate gifs, but due to copyright issues, the newer ones generate png or jpegs.

Options

--zoom number

Zoom level of the earth.  Deafault is 1 which is the whole earth.

--xrot number    

Rotate the earth around the x-axis (Latitude) in degrees.

--yrot number

Rotate the earth around the y-axis (Longitude) in degrees.

--zrot number

Rotate the earth around the z-axis in degrees.

--colorfile filename

The path to the colorfile which defines the colors various things will be displayed in, or if they will be displayed at all.  If the value is not specified, the file ~/.rmaprc will be checked, and then the  default file (rmap.colors).  The location of this file is specified at  compile time based on the either the --prefix or --datadir options to configure.  

--datafile filename

The path to the datafile.  The default location of this file is specified at  compile time based on the either the --prefix or --datadir options to configure.

--outfile filename

The path of the image to be generated.  If none is specified, then  EarthImage will be generated in the current working directory.

--continent list

Either the word `all' or a list of comma seperated numbers where 1=Africa, 2=Asia, 3=Europe, 4=N. America, 5=S. America.  If no option is  specified then `all' is assumed.

--category list

Either the word `all' or a list of comma seperated numbers where 1=US State Boundaries, 2=Rivers, 3=International Boundaries, 4=Coasts, Islands, Lakes. If no option is specified then `all' is assumed.

--height number

The height of the image to generate, in pixles.

--width number

The width of the image to generate, in pixles.

--nogridlines

Do not display gridlines ontop of the earth.  By default they are drawn in  red, spaced at 15 degrees.

--cities

Overlay all applicable city names (from the file city.h) on top of the image.

-h

Display a brief help page, then terminate.

-v

Display the version of code.

Author

Reza Naima <reza@reza.net>

Bugs

This is the first released version, so there are bound to be bugs.  Also, as always, beware of buffer overflow attacks if you use this in a web-based application.