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Last data update: 2014.03.03

R: Compare different elicitated densities.

comparePlot

R Documentation

Compare different elicitated densities.

Description

Compare different elicitated distributions in a trellis display.

Usage

comparePlot(..., type = c("density", "cdf"), deriv,
            points = TRUE, superpose = FALSE, n = 101,
            xlab= "", ylab, addArgs = NULL)

Arguments

`...`	Fitted SEL objects separated by a comma.
`type`	Determines whether to plot densities or cdfs (ignored if `deriv` is not missing).
`deriv`	Specify derivative of the expert's density to be plotted.
`points`	Logical indicating whether elicited quantiles should be displayed, when displaying the cdf.
`superpose`	Logical indicate if plots should be superposed.
`n`	Integer, number of points used for plotting.
`xlab, ylab`	Labels for x-axis and y-axis. If `ylab` is missing the value of `type` is used.
`addArgs`	List specifying additional arguments for `xyplot` function, list elements should match the corresponding arguments of the `xyplot` function.

Author(s)

Bjoern Bornkamp

References

Bornkamp, B. and Ickstadt, K. (2009). A Note on B-Splines for Semiparametric Elicitation. The American Statistician, 63, 373–377

Examples

# example from O'Hagan et al. (2006)
x <- c(177.5, 183.75, 190, 205, 220)
y <- c(0.175, 0.33, 0.5, 0.75, 0.95)

default   <- SEL(x, y, Delta = 0.05, bounds = c(165, 250))
bernst    <- SEL(x, y, d = 10, N = 0, Delta = 0.05, bounds = c(165, 250))
unifknots <- SEL(x, y, d = 3, N = 5, Delta = 0.05, bounds = c(165, 250))
lin       <- SEL(x, y, d = 1, inknts = x, Delta = 0.05, bounds = c(165, 250))
comparePlot(default, bernst, unifknots, lin, type = "cdf")
comparePlot(default, bernst, unifknots, lin, type = "density")

Results


R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> library(SEL)
Loading required package: splines
Loading required package: quadprog
Loading required package: lattice
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/SEL/comparePlot.Rd_%03d_medium.png", width=480, height=480)
> ### Name: comparePlot
> ### Title: Compare different elicitated densities.
> ### Aliases: comparePlot
> ### Keywords: misc
> 
> ### ** Examples
> 
> # example from O'Hagan et al. (2006)
> x <- c(177.5, 183.75, 190, 205, 220)
> y <- c(0.175, 0.33, 0.5, 0.75, 0.95)
> 
> default   <- SEL(x, y, Delta = 0.05, bounds = c(165, 250))
> bernst    <- SEL(x, y, d = 10, N = 0, Delta = 0.05, bounds = c(165, 250))
> unifknots <- SEL(x, y, d = 3, N = 5, Delta = 0.05, bounds = c(165, 250))
> lin       <- SEL(x, y, d = 1, inknts = x, Delta = 0.05, bounds = c(165, 250))
> comparePlot(default, bernst, unifknots, lin, type = "cdf")
> comparePlot(default, bernst, unifknots, lin, type = "density")
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>