contour.im
From spatstat v1.11-2
by Adrian Baddeley
Contour plot of pixel image
Generates a contour plot of a pixel image.
Usage
## S3 method for class 'im':
contour(x, \dots, main, axes=TRUE, add=FALSE)
Arguments
- x
- Pixel image to be plotted.
An object of class
"im"
. - main
- Character string to be displayed as the main title.
- axes
- Logical. If
TRUE
, coordinate axes are plotted (with tick marks) around a region slightly larger than the image window. IfFALSE
, no axes are plotted, and a box is drawn tightly around the image window. Ignored if - add
- Logical. If
FALSE
, a new plot is created. IfTRUE
, the contours are drawn over the existing plot. - ...
- Other arguments passed to
contour.default
controlling the contour plot; see Details.
Details
This is a method for the generic 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
.
Value
- none.
See Also
Examples
# an image
Z <- setcov(owin())
contour(Z)
contour(Z, axes=FALSE)
Community examples
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