plotConditionalMedianFunction: Plot the conditional median function

In SHELF: Tools to Support the Sheffield Elicitation Framework

Plot the conditional median function

Description

Produces a plot of the conditional median function, given a set of conditioning points for the extension variable, a set of corresponding medians of the target variable, given the extension variable, and a choice of link. The identity link is the default, a log link can be used for non-negative target variables, and a logit link can be used for target variables constrained to lie between 0 and 1.

Usage

plotConditionalMedianFunction(
  yCP,
  xMed,
  yLimits = NULL,
  link = "identity",
  xlab = "Y",
  ylab = "median of X given Y",
  fs = 12,
  ybreaks = NULL,
  xbreaks = NULL
)

Arguments

yCP	vector of conditioning points for the extension variable.
xMed	vector of medians of the target variable, corresponding to each value of the extension variable in yCP.
yLimits	limits for the extension variable, used to set the axis limits in the plot
link	link in the median function. One of "identity", "log" or "logit".
xlab	x-axis label
ylab	y-axis label
fs	font size
ybreaks	tick marks on the y-axis
xbreaks	tick marks on the axis

Author(s)

Jeremy Oakley <[e-mail]>

Examples

## Not run: 
plotConditionalMedianFunction(yCP = c(3, 5, 7, 9.5, 13.5),
 xMed = c(2, 6.5, 9, 13, 20),
 yLimits = c(0, 20),
 link = "log")
 
plotConditionalMedianFunction(yCP = c(2, 4, 6, 8, 10),
 xMed = c(0.1, 0.3, 0.5, 0.7, 0.9),
 yLimits = c(0, 15),
 link = "logit")
 

## End(Not run)

SHELF documentation built on Sept. 11, 2024, 6:54 p.m.