placeLabels: Place labels in boxes

In plotrix: Various Plotting Functions

Place labels in boxes

Description

Places labels in boxes on an existing plot

Usage

 placeLabels(x,y=NA,labels,pointer=TRUE,cex=1,labelcol=par("fg"),
 labelbg="white",border=par("fg"),pointercol=par("fg"),
 pch=1,col=1,bg="white",flagcol="red")

Arguments

x,y	x and y position of the centers of the labels. ‘⁠x⁠’ can be an xy.coords list.
labels	Text strings
pointer	Whether to draw a line segment from the label to the points labeled.
cex	Character expansion. See ‘⁠text⁠’.
labelcol	The color(s) of the text in the labels.
labelbg	The background color(s) for the labels.
border	The color(s) for the borders around the rectangles.
pointercol	The color(s) of the pointer lines.
pch	The symbol(s) to use when redisplaying the original points (see Details).
col	The color(s) of the original points.
bg	The background color(s) of the original points.
flagcol	The color to use for "flagging" each point.

Details

‘⁠placeLabels⁠’ steps through the points indexed by ‘⁠x⁠’ and ‘⁠y⁠’, allowing the operator to manually place the labels for each point. Each point is "flagged" by displaying a small colored circle (red by default). When the label for that point has been placed, the original symbol is displayed and the next point is flagged.

Each point and label can have different colors and backgrounds.

Value

nil - adds labels to an existing plot.

Note

This function is handy for one-off plots with a moderate number of points. It can be very useful for plots with clumps of points.

Author(s)

Jim Lemon - thanks to Marna Wagley for the idea.

See Also

spread.labels, thigmophobe.labels

Examples

 # won't check because of the call to locator
 ## Not run: 
  x<-rnorm(10)
  y<-rnorm(10)
  plot(x,y)
  placeLabels(x,y,LETTERS[1:10],flagcol="purple")
 
## End(Not run)

plotrix documentation built on Nov. 10, 2023, 5:07 p.m.