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d.geodesicgrass - Online in the Cloud

Run d.geodesicgrass in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command d.geodesicgrass 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.geodesic - Displays a geodesic line, tracing the shortest distance between two
geographic points along a great circle, in a longitude/latitude data set.

KEYWORDS


display, distance, great circle, shortest path

SYNOPSIS


d.geodesic
d.geodesic --help
d.geodesic coordinates=lon1,lat1,lon2,lat2 [line_color=name] [text_color=name]
[units=string] [--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

text_color=name
Text color
Either a standard color name or R:G:B triplet

units=string
Units
Units
Options: meters, kilometers, feet, miles
Default: meters

DESCRIPTION


d.geodesic displays a geodesic line in the active frame on the user’s graphics monitor.
This is also known as the great circle line and traces the shortest distance between two
user-specified points on the curved surface of a longitude/latitude data set. The two
coordinate locations named must fall within the boundaries of the user’s current
geographic region.

OPTIONS


By default black line color and red text color will be used.

By indicating the starting and ending coordinates of the geodesic, the line and its length
(by default in meters) are displayed to the graphical output. If the text color is set to
none, the great circle distance is not displayed.

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
# show additionally a 20 degree grid
d.grid 20
d.geodesic coordinates=55:58W,33:18S,26:43E,60:37N \
line_color=yellow text_color=red units=kilometers

Geodesic line (great circle line)

NOTES


This program works only in GRASS locations with longitude/latitude coordinate system.

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