R: Logspline Density Estimation - 1992 version

plot.oldlogspline {logspline} | R Documentation

## Logspline Density Estimation - 1992 version

### Description

Plots an `oldlogspline` density, distribution function, hazard function or survival function from a logspline density that was fitted using the 1992 knot deletion algorithm. The 1997 algorithm using knot deletion and addition is available using the `logspline` function.

### Usage

    ## S3 method for class 'oldlogspline'
    plot(x, n = 100, what = "d", xlim, xlab = "", ylab = "",
    type = "l", add = FALSE, ...)

### Arguments

`x` | `logspline` object, typically the result of `logspline`.
`n` | the number of equally spaced points at which to plot the density.
`what` | what should be plotted: `"d"` (density), `"p"` (distribution function), `"s"` (survival function) or `"h"` (hazard function).
`xlim` | range of data on which to plot. Default is from the 1th to the 99th percentile of the density, extended by 10% on each end.
`xlab,ylab` | labels plotted on the axes.
`type` | type of plot.
`add` | should the plot be added to an existing plot.
`...` | other plotting options, as desired

### Details

This function produces a plot of a `oldlogspline` fit at `n` equally spaced points roughly covering the support of the density. (Use `xlim=c(from,to)` to change the range of these points.)

### Author(s)

Charles Kooperberg clk@fredhutch.org.

### References

Charles Kooperberg and Charles J. Stone. Logspline density estimation for censored data (1992). Journal of Computational and Graphical Statistics, 1, 301–328.

Charles J. Stone, Mark Hansen, Charles Kooperberg, and Young K. Truong. The use of polynomial splines and their tensor products in extended linear modeling (with discussion) (1997). Annals of Statistics, 25, 1371–1470.

### See Also

`logspline`, `oldlogspline`, `summary.oldlogspline`, `doldlogspline`, `poldlogspline`,
`qoldlogspline`, `roldlogspline`.

### Examples

    y <- rnorm(100)
    fit <- oldlogspline(y)
    plot(fit)

[Package logspline version 2.1.13 Index]