# plot.influence.ppm

From spatstat v1.31-3
by Adrian Baddeley

##### Plot Influence Measure

Plots an influence measure that has been computed by `influence.ppm`

.

##### Usage

```
## S3 method for class 'influence.ppm':
plot(x, ...)
```

##### Arguments

- x
- Influence measure (object of class
`"influence.ppm"`

) computed by`influence.ppm`

. - ...
- Arguments passed to
`plot.ppp`

to control the plotting.

##### Details

This is the plot method for objects of class `"influence.ppm"`

.
These objects are computed by the command `influence.ppm`

.

The display shows circles centred at the data points with radii proportional to the influence values.

##### Value

- None.

##### References

Baddeley, A. and Chang, Y.M. and Song, Y. (2011)
Leverage and influence diagnostics for spatial point process models.
*Scandinavian Journal of Statistics*, in press.

##### See Also

##### Examples

```
X <- rpoispp(function(x,y) { exp(3+3*x) })
fit <- ppm(X, ~x+y)
plot(influence(fit))
```

*Documentation reproduced from package spatstat, version 1.31-3, License: GPL (>= 2)*

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