# plot.msr

##### Plot a Signed or Vector-Valued Measure

Plot a signed measure or vector-valued measure.

##### Usage

```
# S3 method for msr
plot(x, …,
add = FALSE,
how = c("image", "contour", "imagecontour"),
main = NULL,
do.plot = TRUE,
multiplot = TRUE,
massthresh = 0,
equal.markscale = FALSE,
equal.ribbon = FALSE)
```

##### Arguments

- x
The signed or vector measure to be plotted. An object of class

`"msr"`

(see`msr`

).- …
Extra arguments passed to

`Smooth.ppp`

to control the interpolation of the continuous density component of`x`

, or passed to`plot.im`

or`plot.ppp`

to control the appearance of the plot.- add
Logical flag; if

`TRUE`

, the graphics are added to the existing plot. If`FALSE`

(the default) a new plot is initialised.- how
String indicating how to display the continuous density component.

- main
String. Main title for the plot.

- do.plot
Logical value determining whether to actually perform the plotting.

- multiplot
Logical value indicating whether it is permissible to display a plot with multiple panels (representing different components of a vector-valued measure, or different types of points in a multitype measure.)

- massthresh
Threshold for plotting atoms. A single numeric value or

`NULL`

. If`massthresh=0`

(the default) then only atoms with nonzero mass will be plotted. If`massthresh > 0`

then only atoms whose absolute mass exceeds`massthresh`

will be plotted. If`massthresh=NULL`

, then all atoms of the measure will be plotted.- equal.markscale
Logical value indicating whether different panels should use the same symbol map (to represent the masses of atoms of the measure).

- equal.ribbon
Logical value indicating whether different panels should use the same colour map (to represent the density values in the diffuse component of the measure).

##### Details

This is the `plot`

method for the class `"msr"`

.

The continuous density component of `x`

is interpolated
from the existing data by `Smooth.ppp`

,
and then displayed as a colour image by `plot.im`

.

The discrete atomic component of `x`

is then superimposed on this
image by plotting the atoms as circles (for positive mass)
or squares (for negative mass) by `plot.ppp`

.
By default, atoms with zero mass are not plotted at all.

To smooth both the discrete and continuous components,
use `Smooth.msr`

.

Use the argument `clipwin`

to restrict the plot to a subset
of the full data.

To remove atoms with tiny masses, use the argument `massthresh`

.

##### Value

(Invisible) colour map (object of class `"colourmap"`

) for the
colour image.

##### See Also

##### Examples

```
# NOT RUN {
X <- rpoispp(function(x,y) { exp(3+3*x) })
fit <- ppm(X, ~x+y)
rp <- residuals(fit, type="pearson")
rs <- residuals(fit, type="score")
plot(rp)
plot(rs)
plot(rs, how="contour")
# }
```

*Documentation reproduced from package spatstat, version 1.57-1, License: GPL (>= 2)*