d.northarrow.1grass - Man Page

Displays a north arrow on the graphics monitor.

Keywords

display, cartography, map annotations, arrow

d.northarrow d.northarrow --help d.northarrow [-twr] [style=string] [at=x,y] [rotation=float] [label=string] [color=name] [fill_color=name] [text_color=name] [width=float] [font=string] [fontsize=float] [path=name] [charset=string] [--help] [--verbose] [--quiet] [--ui]

Flags

-t: Draw the symbol without text
-w: Do not rotate text with symbol
-r: Use radians instead of degrees for rotation
--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters

style=string: North arrow style
Options: 1a, 1b, 2, 3, 4, 5, 6, 7a, 7b, 8a, 8b, 9, fancy_compass, basic_compass, arrow1, arrow2, arrow3, star
Default: 1a
1a: Two color arrowhead
1b: Two color arrowhead with circle
2: Narrow with blending N
3: Long with small arrowhead
4: Inverted narrow inside a circle
5: Triangle and N inside a circle
6: Arrowhead and N inside a circle
7a: Tall half convex arrowhead
7b: Tall half concave arrowhead
8a: Thin arrow in a circle
8b: Fat arrow in a circle
9: One color arrowhead
fancy_compass: Fancy compass
basic_compass: Basic compass
arrow1: Simple arrow
arrow2: Thin arrow
arrow3: Fat arrow
star: 4-point star
at=x,y: Screen coordinates of the rectangle’s top-left corner
(0,0) is lower-left of the display frame
Options: 0-100
Default: 85.0,15.0
rotation=float: Rotation angle in degrees (counter-clockwise)
Default: 0
label=string: Displayed letter on the top of arrow
Default: N
color=name: Line color
Either a standard color name, R:G:B triplet, or "none"
Default: black
fill_color=name: Fill color
Either a standard color name, R:G:B triplet, or "none"
Default: black
text_color=name: Text color
Either a standard color name or R:G:B triplet
width=float: Line width
Default: 0
font=string: Font name
fontsize=float: Font size
Options: 1-360
Default: 14
path=name: Path to font file
charset=string: Text encoding (only applicable to TrueType fonts)

Description

d.northarrow displays a north arrow symbol at the given screen coordinates. If no coordinates are given it will draw the north arrow in the bottom right of the display. It can draw the north arrow in a number of styles (see the wiki page for details). With certain styles of north arrow label ’N’ is displayed by default, and can be changed with option label, for example for different languages. The label can be hidden with -t flag.

North arrow can be rotated, for example to align with true north, not grid north. The angle in degrees counter-clockwise (or radians with -r flag) can be specified with option rotation. Label is rotated together with the arrow, unless flag -w is specified.

Examples

Display a north arrow symbol as a basic compas with label NORTH, rotated by 8 degrees with label, with black line and gray fill:

d.mon wx0
d.northarrow style=basic_compas rotation=8 label=NORTH -w color=black fill_color=gray
d.mon -r

Authors

Hamish Bowman, Department of Geology, University of Otago, New Zealand
Improvements as part of GSoC 2016 by Adam Laza, CTU in Prague

Source Code

Available at: d.northarrow source code (history)

Accessed: Monday Sep 09 08:47:09 2024

Info

GRASS 8.4.0 GRASS GIS User's Manual