Sort VI.ggplot points list

Allows the list of data points listed by VI.ggplot to be sorted by x or y values, ascending or descending. Currently only implemented for geom_points. This function is experimental and has not been extensively tested.

Usage

# S3 method for VIgraph
sort(x, decreasing = FALSE, by = "x", ...)

Arguments

x

object returned by VI.ggplot

decreasing

logical: should the sort be decreasing

by

value on which to sort, "x" or "y"

...

further arguments passed to base::sort

Value

Returns a new object of the same type as that returned by VI.ggplot, but with data re-ordered.

Author

Debra Warren and Paul Murrell

Examples

if (require(ggplot2)) {
    sort(VI(qplot(x=1:5, y=c(2,5,1,4,3))), decreasing=TRUE, by="y")
}
#> This is an untitled chart with no subtitle or caption.
#> It has x-axis '1:5' with labels 1, 2, 3, 4 and 5.
#> It has y-axis 'c(2, 5, 1, 4, 3)' with labels 1, 2, 3, 4 and 5.
#> The chart is a set of 5 big solid circle points of which about 100% can be seen.
#> The points are at:
#> (2, 5), 
#> (4, 4), 
#> (5, 3), 
#> (1, 2) and 
#> (3, 1)