Description Usage Arguments Value Note Author(s) See Also Examples
View source: R/north.pointer.r
Function for drawing a north pointer on a blighty map
1 | north.pointer(pos="AUTO")
|
pos |
Can be |
No return value
Draws a simple North pointer on a map. The postion refers to the centre of the N on the pointer.
You can't use this with other high level plotting commands (such as oz
) because blighty()
stores the mapping parameters from it's last invocation in an object called blighty.mapinfo
from which the position, and size, of the scale is calculated.
David Lucy <d.lucy@lancaster.ac.uk>http://www.maths.lancs.ac.uk/~lucy/
1 2 3 4 5 6 | blighty() # draw coastline
north.pointer(pos="AUTO") # automatic placing
north.pointer() # same as above
## Not run: north.pointer(pos="select") # uses locator to find the position
north.pointer(pos=c(500,500)) # vector to determine the centre of the
# N of the pointer
|
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