pairsWithCor: Scatterplot Matrices with Correlation

In PeteHaitch/repete: Peter Hickey's R Code

Description

A wrapper around 'graphics::pairs()' that includes correlation estimates on the lower diagonal and a [stats::lowess()] smooth of the scatterplots on the upper triangle with [graphics::panel.smooth()].

Usage

pairsWithCor(x, use = "everything", method = c("pearson", "kendall",
  "spearman"), ...)

Arguments

x	the coordinates of points given as numeric columns of a matrix or data frame. Logical and factor columns are converted to numeric in the same way that data.matrix does.
use	an optional character string giving a method for computing covariances in the presence of missing values. This must be (an abbreviation of) one of the strings "everything", "all.obs", "complete.obs", "na.or.complete", or "pairwise.complete.obs".
method	a character string indicating which correlation coefficient (or covariance) is to be computed. One of "pearson" (default), "kendall", or "spearman": can be abbreviated.
...	arguments to be passed to or from methods. Also, graphical parameters can be given as can arguments to plot such as main. par("oma") will be set appropriately unless specified.

Details

The ijth scatterplot contains x[,i] plotted against x[,j]. The scatterplot can be customised by setting panel functions to appear as something completely different. The off-diagonal panel functions are passed the appropriate columns of x as x and y: the diagonal panel function (if any) is passed a single column, and the text.panel function is passed a single (x, y) location and the column name. Setting some of these panel functions to NULL is equivalent to not drawing anything there.

The graphical parameters pch and col can be used to specify a vector of plotting symbols and colors to be used in the plots.

The graphical parameter oma will be set by pairs.default unless supplied as an argument.

A panel function should not attempt to start a new plot, but just plot within a given coordinate system: thus plot and boxplot are not panel functions.

By default, missing values are passed to the panel functions and will often be ignored within a panel. However, for the formula method and na.action = na.omit, all cases which contain a missing values for any of the variables are omitted completely (including when the scales are selected).

Arguments horInd and verInd were introduced in R 3.2.0. If given the same value they can be used to select or re-order variables: with different ranges of consecutive values they can be used to plot rectangular windows of a full pairs plot; in the latter case ‘diagonal’ refers to the diagonal of the full plot.

References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.

Examples

pairsWithCor(USJudgeRatings)

PeteHaitch/repete documentation built on May 8, 2019, 1:32 a.m.