textrect {RPMG} | R Documentation |
Text labels with border
Description
Plot Text labels with border and background color
Usage
textrect(x, y, lab, textcol = "black", col = "white",
border = "black", off = 0.06, brd = 0.06, pos = 1, log="" ,
add=TRUE, ...)
Arguments
x |
x-location, user coordinates |
y |
y-location, user coordinates |
lab |
character for label |
textcol |
color for labels |
col |
color for background |
border |
color for border, NA=do not plot |
off |
Offset from point, inches, default=0.06 |
brd |
Border around text, inches, default=0.06 |
pos |
numeric, position=one of (0.0, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5), as in the normal text call with pos=1,2,3,4, however, here I allow half way between points. 0 indicates no offset and label is placed centered on the point. |
log |
character, as in plot |
add |
add to existing plot (FALSE returns plotting rectangles) |
... |
additional parameters from par, used for font, cex, etc... |
Details
textrect plots a label on an existing plot at the location designated. The text is surrounded by a rectangular box with color inside and a border. The box can be placed around the designated point at 9 positions. Positions 1,2,3,4 are the same as text parameter pos. Position 0 is centered, i.e. no offset. Positions, 1.5, 2.5, 3.5, 4.5 are at an angle 45 degrees clockwise from the integer values.
Value
graphical side effects.
Author(s)
Jonathan M. Lees<jonathan.lees@unc.edu>
Examples
thepos = c(0, seq(from=1, to=4.5, by=.5))
lab="the string"
x = 1:9
y = 1:9
plot(x,y, asp=1)
for(i in 1:length(thepos))
{
textrect(x[i], y[i], lab, col=i , border='green' ,
textcol="gold", off=.06, brd=.06 , pos=thepos[i], font=1, cex=.8 )
}
x = runif(10)
y = runif(10)
lab = floor( 1000*runif(10) )
i=sample(thepos, 10, replace = TRUE)
col = sample(rainbow(100) , 10, replace = TRUE)
plot(x,y, asp=1)
textrect(x, y, lab, pos=i , textcol="black", col=col)