## S3 method for class 'im':
contour(x, \dots, main, axes=TRUE, add=FALSE)
"im"
.TRUE
, coordinate axes are plotted
(with tick marks) around a region slightly larger than the image window.
If FALSE
, no axes are plotted,
and a box is drawn tightly around the image window.
Ignored if FALSE
, a new plot is created. If TRUE
,
the contours are drawn over the existing plot.contour.default
controlling the contour plot; see Details.contour
function,
for objects of the class "im"
.
An object of class "im"
represents a pixel image;
see im.object
. This function displays the values of the pixel image x
as a contour plot on the current plot device,
using equal scales on the $x$ and $y$ axes.
The appearance of the plot can be modified
using any of the arguments listed in the help for
contour.default
.
Useful ones include:
[object Object],[object Object],[object Object]
See contour.default
for a full list of these arguments.
The defaults for any of the abovementioned arguments
can be reset using spatstat.options
.
im.object
,
plot.im
,
persp.im
# an image
Z <- setcov(owin())
contour(Z)
contour(Z, axes=FALSE)
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