| map.scale {blighty} | R Documentation |
Function for drawing a simple scale on a blighty map
map.scale(pos="AUTO", width=1)
pos |
Can be AUTO (default), select, or a vector with the coordinates for the centre of the scale. |
width |
Integer value for the width of the bar. |
No return value
This function draws a simple bar for a scale with the length of the bar in km beneath it. AUTO (default) draws the scale in the North-East corner of the map. select prompts for locator to allow the user to place the centre of the scale manually. If you send a vector then the vector gives the position of the centre of the scale.
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/
blighty() # draw coastline map.scale(pos="AUTO", width=2) # automatic placing map.scale(width=2) # same as above ## Not run: map.scale(pos="select") # locator to select map.scale(pos=c(400,400)) # position vector