Nice placement of labels in a plot
Function textxy calls function text in order to add text
to points in a graph. textxy chooses a different position
for the text depending on the quadrant. This tends to
produces better readable plots, with labels fanning away from the origin.
textxy(X, Y, labs, m = c(0, 0), cex = 0.5, offset = 0.8, ...)
X |
x coordinates of a set of points |
Y |
y coordinates of a set of points |
labs |
labels to be placed next to the points |
m |
coordinates of the origin of the plot (default (0,0)) |
cex |
character expansion factor |
offset |
controls the distance between the label and the point. A value of 0 will plot labels on top of the point. Larger values give larger separation between point and label. The default value is 0.8 |
... |
additiona arguments for function |
NULL
Jan Graffelman (jan.graffelman@upc.edu)
Graffelman, J. (2006) A guide to biplot calibration.
x <- rnorm(50) y <- rnorm(50) plot(x,y,asp=1) textxy(x,y,1:50,m=c(mean(x),mean(y)))
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