OUTLINE_REGIONS

Name

Outline_Regions

Purpose

Draw a line around regions on a contour plot.

Calling Sequence

Outline_Regions, map, x, y $
, COLOUR = colour $
, THICK = thick $
, LINESTYLE = linestyle

Inputs

map: an array defining the regions
lines are drawn between points with 1 and anything else that is
positive or zero.
map is a two-d array of 0 and 1 (also negative values now),
since lines are drawn between 0s and 1s it doesn't matter
which of them represents land. No lines are drawn between
ones and negative values.
x: the column coordinate vector for the map used for mapping the
lines onto a previously established scaling
y: the row coordinate vector for the map

Keyword Parameters

COLOUR: a colour table index to use drawing the outlines.
THICK: the IDL line thickness to use when drawing the outlines.
LINESTYLE: the IDL line style to be used when drawing the outlines.

Side Effects

The contents of the current plotting device are changed.

Modification History

Written by: Edward C. Wiebe, 1999-02-12.
Modified by: ECW, 17 July 2000 (some new rules were needed. Added
a test for negative values in the map.)