lag.plot {stats} | R Documentation |

Plot time series against lagged versions of themselves. Helps visualizing “auto-dependence” even when auto-correlations vanish.

lag.plot(x, lags = 1, layout = NULL, set.lags = 1:lags, main = NULL, asp = 1, diag = TRUE, diag.col = "gray", type = "p", oma = NULL, ask = NULL, do.lines = (n <= 150), labels = do.lines, ...)

`x` |
time-series (univariate or multivariate) |

`lags` |
number of lag plots desired, see arg `set.lags` . |

`layout` |
the layout of multiple plots, basically the `mfrow`
`par()` argument. The default uses about a square
layout (see `n2mfrow` such that all plots are on one page. |

`set.lags` |
vector of positive integers allowing specification of
the set of lags used; defaults to `1:lags` . |

`main` |
character with a main header title to be done on the top of each page. |

`asp` |
Aspect ratio to be fixed, see `plot.default` . |

`diag` |
logical indicating if the x=y diagonal should be drawn. |

`diag.col` |
color to be used for the diagonal `if(diag)` . |

`type` |
plot type to be used, but see `plot.ts` about
its restricted meaning. |

`oma` |
outer margins, see `par` . |

`ask` |
logical or `NULL` ; if true, the user is asked to
confirm before a new page is started. |

`do.lines` |
logical indicating if lines should be drawn. |

`labels` |
logical indicating if labels should be used. |

`...` |
Further arguments to `plot.ts` . Several
graphical parameters are set in this function and so cannot be
changed: these include `xlab` , `ylab` , `mgp` ,
`col.lab` and `font.lab` : this also applies to the
arguments `xy.labels` and `xy.lines` . |

If just one plot is produced, this is a conventional plot. If more
than one plot is to be produced, `par(mfrow)`

and several other
graphics parameters will be set, so it is not (easily) possible to mix
such lag plots with other plots on the same page.

If `ask = NULL`

, `par(ask = TRUE)`

will be called if more than
one page of plots is to be produced and the device is interactive.

It is more flexible and has different default behaviour than
the S version. We use `main =`

instead of `head = `

for
internal consistency.

Martin Maechler

`plot.ts`

which is the basic work horse.

lag.plot(nhtemp, 8, diag.col = "forest green") lag.plot(nhtemp, 5, main="Average Temperatures in New Haven") ## ask defaults to TRUE when we have more than one page: lag.plot(nhtemp, 6, layout = c(2,1), asp = NA, main = "New Haven Temperatures", col.main = "blue") ## Multivariate (but non-stationary! ...) lag.plot(freeny.x, lag = 3) ## Not run: no lines for long series : lag.plot(sqrt(sunspots), set = c(1:4, 9:12), pch = ".", col = "gold") ## End(Not run)

[Package *stats* version 2.5.0 Index]