DescTools (version 0.99.7)

PlotBubble: Draw a Bubble Plot

Description

Draw a bubble plot, defined by a pair of coordinates x, y to place the bubbles, an area definition configuring the dimension and a color vector setting the color of the bubbles. The legitimation to define a new function instead of just using plot(symbols(...)) is the automated calculation of the axis limits, ensuring all elements will be fully visible.

Usage

PlotBubble(x, y, area, col, border = NA, na.rm = FALSE, inches = FALSE, ...)

Arguments

x, y

the x and y co-ordinates for the centres of the bubbles. They can be specified in any way which is accepted by xy.coords.

area

a vector giving the area of the bubbles.

col

colors for the bubbles, passed to symbol.

border

the border color fot the bubbles. Set NA if there should be no border at all. This is the default.

na.rm

logical, should NAs be omitted? Defaults to FALSE.

inches

TRUE, FALSE or a positive number. See 'Details'.

...

the dots are passed to the plot function.

Details

Argument inches controls the sizes of the symbols. If TRUE (the default), the symbols are scaled so that the largest dimension of any symbol is one inch. If a positive number is given the symbols are scaled to make largest dimension this size in inches (so TRUE and 1 are equivalent). If inches is FALSE, the units are taken to be those of the appropriate axes. This behaviour is the same as in symbols.

See Also

symbols, sunflowerplot

Examples

PlotBubble( x=d.pizza$delivery_min, y=d.pizza$temperature, area=d.pizza$price, 
  xlab="delivery time", ylab="temperature", 
  col=SetAlpha(as.numeric(d.pizza$area)+2, .5), border="darkgrey", 
  na.rm=TRUE, main="Price-Bubbles", panel.first=grid())


PlotBubble(d.world$x, d.world$y, area=d.world$pop/90, col=SetAlpha("steelblue",0.4), 
  border="darkblue", xlab="", ylab="", panel.first=grid(), 
  main="World population")
text(d.world$x, d.world$y, labels=d.world$country, cex=0.7, adj=0.5)