R Graphical Manual

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Last data update: 2014.03.03

R: Crosshair Plot.

crosshair.meta4diag

R Documentation

Crosshair Plot.

Description

Takes a meta4diag object produced by the function meta4diag() and produces a crosshair plot or adds such a plot to an existing plot. Crosshair plots go back to Phillips et al. (2010).

Usage

crosshair(x,...)
## S3 method for class 'meta4diag'
crosshair(x, est.type = "mean", add = FALSE, save = F, xlim, ylim, xlab, ylab, ...)

Arguments

`x`	A `meta4diag` object.
`est.type`	The estimates type used to make crosshair plot. Options are "mean" and "median".
`add`	If add is TRUE, the plots are added to an existing plot, otherwise a new plot is created.
`save`	If save is TRUE, the plots are saved (pdf format) automatically in the folder where the data is loaded. save could also be a file name, i.e. `save="plot1.eps"`, a file with name plot1 and eps format will be saved in the folder where the data is loaded.
`xlim`	A numeric value, giving the x coordinates ranges.
`ylim`	A numeric value, giving the y coordinates ranges.
`xlab`	A title for the x axis.
`ylab`	A title for the y axis.
`...`	graphics parameters can also be passed to this function.

Value

Besides plotting, the function returns an invisible NULL.

Author(s)

Jingyi Guo

References

Phillips, B., Stewart, L.A., & Sutton, A.J. (2010). "'Cross hairs' plots for diagnostic meta-analysis." Research Synthesis Methods, 1, 308-315.

Examples

## Not run: 
if(requireNamespace("INLA", quietly = TRUE)){
  require("INLA", quietly = TRUE)
  data(Catheter)
  res <- meta4diag(data = Catheter)
  crosshair(res, est.type="mean")
}

## End(Not run)