scatter.hist: Draw a scatter plot with associated X and Y histograms,...

Description Usage Arguments Details Note Author(s) See Also Examples

Description

Draw a X Y scatter plot with associated X and Y histograms with estimated densities. Partly a demonstration of the use of layout. Also includes lowess smooth or linear model slope, as well as correlation. Adapted from addicted to R example 78 with further modifications suggested by Jared Smith.

Usage

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scatterHist(x,y=NULL,smooth=TRUE,ab=FALSE,correl=TRUE,density=TRUE,ellipse=TRUE,  
  digits=2,method,cex.cor=1, title="Scatter plot + histograms", xlab=NULL,ylab=NULL,  
   smoother=FALSE,nrpoints=0, xlab.hist=NULL,ylab.hist=NULL,grid=FALSE, xlim=NULL, 
   ylim=NULL, x.breaks=11,y.breaks=11, x.space=0, y.space=0 ,freq=TRUE, x.axes=TRUE, 
   y.axes=TRUE,...) 
 
 scatter.hist(x,y=NULL,smooth=TRUE,ab=FALSE, correl=TRUE, density=TRUE, ellipse=TRUE, 
 digits=2, method,cex.cor=1, title="Scatter plot + histograms", 
 xlab=NULL,ylab=NULL,smoother=FALSE, nrpoints=0, xlab.hist=NULL, ylab.hist=NULL, 
 grid=FALSE, xlim=NULL,ylim=NULL,x.breaks=11,y.breaks=11,
 x.space=0,y.space=0,freq=TRUE,x.axes=TRUE,y.axes=TRUE,...)

Arguments

x

The X vector, or the first column of a data.frame or matrix.

y

The Y vector, of if X is a data.frame or matrix, the second column of X

smooth

if TRUE, then add a loess smooth to the plot

ab

if TRUE, then show the best fitting linear fit

correl

TRUE: Show the correlation

density

TRUE: Show the estimated densities

ellipse

TRUE: draw 1 and 2 sigma ellipses and smooth

digits

How many digits to use if showing the correlation

method

Which method to use for correlation ("pearson","spearman","kendall") defaults to "pearson"

smoother

if TRUE, use smoothScatter instead of plot. Nice for large N.

nrpoints

If using smoothScatter, show nrpoints as dots. Defaults to 0

grid

If TRUE, show a grid for the scatter plot.

cex.cor

Adjustment for the size of the correlation

xlab

Label for the x axis

ylab

Label for the y axis

xlim

Allow specification for limits of x axis, although this seems to just work for the scatter plots.

ylim

Allow specification for limits of y axis

x.breaks

Number of breaks to suggest to the x axis histogram.

y.breaks

Number of breaks to suggest to the y axis histogram.

x.space

space between bars

y.space

Space between y bars

freq

Show frequency counts, otherwise show density counts

x.axes

Show the x axis for the x histogram

y.axes

Show the y axis for the y histogram

xlab.hist

Not currently available

ylab.hist

Label for y axis histogram. Not currently available.

title

An optional title

...

Other parameters for graphics

Details

Just a straightforward application of layout and barplot, with some tricks taken from pairs.panels. The various options allow for correlation ellipses (1 and 2 sigma from the mean), lowess smooths, linear fits, density curves on the histograms, and the value of the correlation. ellipse = TRUE implies smooth = TRUE. The grid option provides a background grid to the scatterplot. )

Note

Adapted from Addicted to R example 78. Modified following some nice suggestions from Jared Smith.

Author(s)

William Revelle

See Also

pairs.panels for multiple plots, multi.hist for multiple histograms.

Examples

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data(sat.act)
with(sat.act,scatter.hist(SATV,SATQ))
#or for something a bit more splashy
scatter.hist(sat.act[5:6],pch=(19+sat.act$gender),col=c("blue","red")[sat.act$gender],grid=TRUE)

psych documentation built on Sept. 9, 2017, 5:05 p.m.