R: Two trace plots and a scatter plot.

grid_trace2 {spam} | R Documentation

## Two trace plots and a scatter plot.

### Description

For two (MCMC) chains of the same length trace plots and a scatter plot are drawn.

### Usage

    grid_trace2(chain1, chain2 = NULL,
                xlim = NULL, ylim1 = NULL, ylim2=NULL,
                chain1_lab = "", chain2_lab = "", main = "",
                chain1_yaxis_at = NULL, chain2_yaxis_at = NULL,
                log = FALSE,
                cex_points = unit(0.2, "mm"),
                cex_main = unit(1.2, "mm"),
                lwd_lines = unit(0.1, "mm"),
                lwd_frame = unit(0.8, "mm"),
                draw = TRUE)

### Arguments

`chain1` | Numeric vector or a matrix with two columns.
`chain2` | Numeric vector of same length as `chain1`. (Only used if `chain1` is specified as vector).
`xlim` | x axis limits of both chains (numeric vector of length 2).
`ylim1` | y axis limits of chain 1 (numeric vector of length 2).
`ylim2` | y axis limits of chain 2 (numeric vector of length 2).
`chain1_lab` | Label of chain 1 (character of length 1).
`chain2_lab` | Label of chain 2 (character of length 1).
`main` | Title (character of length 1).
`chain1_yaxis_at` | Points at which tick-marks are drawn for chain 1.
`chain2_yaxis_at` | Points at which tick-marks are drawn for chain 2.
`log` | Logical, should the date be log transformed?
`cex_points` | Size of points in scatter plot.
`cex_main` | Size of the title font.
`lwd_lines` | Line width of trace plots.
`lwd_frame` | Line width of frames.
`draw` | Logical, should the returned grob object be drawn?

### Details

The figure is optimized for a plot of the format x11(width = 10, height = 3).

### Value

A grob object.

### Author(s)

Florian Gerber <florian.gerber@math.uzh.ch>

### See Also

grid_zoom

### Examples

    grid_trace2(runif(500), runif(500),
                chain1_yaxis_at = seq(.2, 1, by = .2),
                chain1_lab = "chain1", chain2_lab = "chain2",
                main = "Uniform",
                lwd_lines = unit(.5, "mm"))

[Package spam version 2.1-1 Index]