This is the command d.rhumblinegrass that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
d.rhumbline - Displays the rhumbline joining two longitude/latitude coordinates.
KEYWORDS
display, distance, rhumbline
SYNOPSIS
d.rhumbline
d.rhumbline --help
d.rhumbline coordinates=lon1,lat1,lon2,lat2 [line_color=name] [--help] [--verbose]
[--quiet] [--ui]
Flags:
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog
Parameters:
coordinates=lon1,lat1,lon2,lat2 [required]
Starting and ending coordinates
line_color=name
Line color
Either a standard color name or R:G:B triplet
Default: black
DESCRIPTION
A rhumbline (loxodrome) is a line following a constant angle of the compass (i.e., a line
of constant direction). It crosses all meridians at the same angle, i.e. a path of
constant bearing. d.rhumbline displays the rhumbline joining any two user-specified
points in the active frame on the user’s graphics monitor. The named coordinate locations
must fall within the boundaries of the user’s current geographic region.
The user has to specify the starting and ending longitude/latitude coordinates of the
rhumbline and (optionally) the color in which the rhumbline will be displayed; in this
case, the program will run non-interactively.
EXAMPLE
A geodesic line if shown over the political map of the world (demolocation dataset):
g.region vector=country_boundaries -p
d.mon wx0
d.vect country_boundaries type=area
d.rhumbline coordinates=55:58W,33:18S,26:43E,60:37N \
line_color=yellow
# show additionally 10 degree grid
d.grid 10
Rhumbline (loxodrome)
NOTES
This program works only in GRASS locations with longitude/latitude coordinate system.
Use d.rhumblinegrass online using onworks.net services
