# plot.correlogram

##### Plot a Correlogram

These functions plot correlagrams previously computed with
`correlogram.formula`

.

- Keywords
- hplot

##### Usage

```
# S3 method for correlogram
plot(x, legend = TRUE, test.level = 0.05,
col = c("grey", "red"), type = "b", xlab = "",
ylab = "Moran's I", pch = 21, cex = 2, ...)
# S3 method for correlogramList
plot(x, lattice = TRUE, legend = TRUE,
test.level = 0.05, col = c("grey", "red"),
xlab = "", ylab = "Moran's I",
type = "b", pch = 21, cex = 2, ...)
```

##### Arguments

- x
an object of class

`"correlogram"`

or of class`"correlogramList"`

(both produced by`correlogram.formula`

).- legend
should a legend be added on the plot?

- test.level
the level used to discriminate the plotting symbols with colours considering the P-values.

- col
two colours for the plotting symbols: the first one is used if the P-value is greater than or equal to

`test.level`

, the second one otherwise.- type
the type of plot to produce (see

`plot`

for possible choices).- xlab
an optional character string for the label on the x-axis (none by default).

- ylab
the default label on the y-axis.

- pch
the type of plotting symbol.

- cex
the default size for the plotting symbols.

- lattice
when plotting several correlograms, should they be plotted in trellis-style with lattice (the default), or together on the same plot?

- …
other parameters passed to the

`plot`

or`lines`

function.

##### Details

When plotting several correlograms with lattice, some options have no
effect: `legend`

, `type`

, and `pch`

(`pch=19`

is
always used in this situation).

When using `pch`

between 1 and 20 (i.e., non-filled symbols, the
colours specified in `col`

are also used for the lines joining
the points. To keep black lines, it is better to leave `pch`

between 21 and 25.

##### See Also

*Documentation reproduced from package ape, version 5.4, License: GPL-2 | GPL-3*