| plot.owin {spatstat} | R Documentation |
Plot a two-dimensional window of observation for a spatial point pattern
plot.owin(x, main, ..., box=TRUE, edge=0.04)
x |
The window to be plotted.
An object of class owin,
or data which can be converted into
this format by as.owin().
|
main |
text to be displayed as a title above the plot. |
... |
extra arguments passed to the generic plot function.
|
box |
logical flag; if TRUE, plot the enclosing rectangular box
|
edge |
nonnegative number; the plotting region will have coordinate limits
that are 1 + edge
times as large as the limits of the rectangular box
that encloses the pattern.
|
This is the plot method for the class owin.
The action is to plot the boundary of the window on the current plot device,
using equal scales on the x and y axes.
If the window x is of type "rectangle" or "polygonal",
the boundary of the window is plotted as a polygon or series of polygons.
If x is of type "mask"
the discrete raster approximation of the window is displayed
as a binary image (white inside the window, black outside).
none.
Adrian Baddeley adrian@maths.uwa.edu.au http://www.maths.uwa.edu.au/~adrian/ and Rolf Turner rolf@math.unb.ca http://www.math.unb.ca/~rolf
library(spatstat) # rectangular window data(nztrees) plot(nztrees$window) abline(v=148, lty=2) # polygonal window plot(c(0,1),c(0,1),type="n") bdry <- locator() # click the vertices of a polygon (anticlockwise) w <- owin(c(0,1), c(0,1), poly=bdry) plot(w) # binary mask we <- erode.owin(w, 0.05, FALSE) plot(we)