map.scale: map.scale

In GISTools: Further Capabilities in Geographic Information Science

map.scale

Description

Draws a scale bar on a map.

Usage

map.scale(xc,yc,len,units,ndivs,subdiv=1,tcol='black',scol='black',sfcol='black')

Arguments

xc	The x-centre (in map units) of the scale bar
yc	The y-centre (in map units) of the scale bar
len	The length (in map units) of the scale bar
units	String specifying the name of the units for the scale bar
ndivs	The number of divisions (units marked) on the scale
subdiv	The fraction of units used to step along the divisions
tcol	The colour of text on the scale bar.
scol	The colour of the scale bar itself.
sfcol	The colour of the filled rectangles in the scale bar.

Details

Draws an alternating bar scale on a map. Returns no value.

Value

None (see above)

Author(s)

Chris Brunsdon

See Also

choro.legend

Examples

# Read in map data for New Haven
data(newhaven)
# Plot census block boundaries
plot(blocks)
# Add a map scale
map.scale(534750,152000,miles2ft(2),"Miles",4,0.5,sfcol='red')
# ... and a title
title('New Haven (CT)')

GISTools documentation built on Oct. 3, 2024, 1:08 a.m.