draw.xy: Draw xy sub-plots in an existing plot

In mapplots: Data Visualisation on Maps

Draw xy sub-plots in an existing plot

Description

This function is intended to draw xy-plots or barplots in existing maps or other plots.

Usage

draw.xy(x, y, xx, yy, xlim = NULL, ylim = NULL, width = 1, height = 0.5, bg = NULL, 
	border = 1, type = "p", col = 1, silent = TRUE, ...)

Arguments

x, y	vectors with x and y-locations of the centre of the xy-plots.
xx, yy	vectors (of the same length as x) with the x and y-values of the xy-plots
xlim, ylim	the x and y-limits of the xy-plots. the same limits will apply to all xyplots. Defaults to range(xx) and range(yy).
width, height	the width and height of the xy-plot area (coordinate units of the main map or plot).
bg	background colour of the xy-plots
border	the colour of the border of the xy-plots. NA will result in no border
type	the type of plot. See plot.default for possible values. Also see Details section below
col	a single colour or a vector of colours (same length as x) for the plotting symbols.
silent	logical, should a progress message be displayed in the console? Defaults to FALSE.
...	other arguments to be passed to points

Details

type = "h" will result in plots that resemble barplots. These are not true barplots as the x-axis is not categorical. However if suitable xx data are provided and lwd is tweaked correctly for the current graphical device it will result in adequate plots.

Author(s)

Hans Gerritsen

Examples

data(effort)
data(coast)
xlim <- c(-12,-5)
ylim <- c(51,54)
col <- terrain.colors(12)
effort$col <- col[match(effort$Month,1:12)]
basemap(xlim, ylim, main = "Monthly trends in haddock landings and fishing effort")
draw.rect(lty=1, col=1)
draw.shape(coast, col="cornsilk")
draw.xy(effort$Lon, effort$Lat, effort$Month, effort$LiveWeight, width=1, height=0.5,
 col=effort$col, type="h",lwd=3, border=NA)
draw.xy(effort$Lon, effort$Lat, effort$Month, effort$Effort, width=1, height=0.5, col="red",
 type="l", border=NA)
draw.xy(effort$Lon, effort$Lat, effort$Month, effort$Effort, width=1, height=0.5, col="red",
 type="p",cex=0.4,pch=16, border=NA)
legend("topleft", c(month.abb,"Effort"), pch=c(rep(22,12),16), pt.bg=c(col,NA),
 pt.cex=c(rep(2,12),0.8),col=c(rep(1,12),2), lty=c(rep(NA,12),1), bg="lightblue",
 inset=0.02, title="Landings", cex=0.8)

mapplots documentation built on June 26, 2025, 5:07 p.m.