doLegend: A simple legend

In Heatplus: Heatmaps with row and/or column covariates and colored clusters

Description

Add a simple legend in form of a color bar to a plot.

Usage

doLegend(breaks, col, side)

Arguments

breaks	a vector of breaks defining a set of intervals for the data
col	a vector of colors corresponding to the intervals.
side	integer between 1 and 4, indicating on which side of the main plot the legend is supposed to be drawn. Standard interpretation: 1 = below, continuing clock-wise.

Details

This is an extremely simple way of giving a visual impression of what numerical values correspond to a given color. The actual plot is done via a call to image and axis.

Value

The locations of the ticks returned by the call to axis

See Also

plot.annHeatmap, niceBreaks, g2r.colors

Examples

    ## Set up data
    doLegend(1:9, g2r.colors(8), 2)

Example output

Heatplus documentation built on Nov. 8, 2020, 6:24 p.m.