R: Plot a Correlogram

plot.correlogram {ape} | R Documentation

## Plot a Correlogram

### Description

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

### Usage

      ## S3 method for class '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 class '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.

### Author(s)

Emmanuel Paradis

### See Also

`correlogram.formula`, `Moran.I`

[Package ape version 5.1 Index]