On Fri, 2006-06-09 at 11:01 +, fernando espindola wrote:
Hi user R,
I am try to put degree character in axis x, but don't make this. I have
the next code:
plot(mot[,5],
time1,xlim=c(-45,-10),type=l,yaxt=n,ylab=,col=1,lwd=2,xlab=,xaxt=n)
The range of value in axis-x is -45 to -10, this values represents the
longitudes positions in space. I try to put 45°S for real value (-45) in
the axis-x, and for all elements . Anybody can give an advance in this
problems.
Thank for all
In general, as Roger noted, see ?plotmath for adding mathematical
annotation to R plots.
To do the degree symbol is relatively straightforward, but adding the
S takes a bit of a trick:
# Create vector of x values
at - seq(-45, -10, 5)
# Create a mock plot
plot(at, 1:8, xlim = range(at), xaxt = n)
# Now create a set of plotmath expressions, one for
# each value of 'at' using paste() and parse()
# The general format for the degrees symbol is x*degree
# However, to add the S we use the ~ to create
# a right and left hand side for the expression and
# place the S after it. The ~ will not print.
L - parse(text = paste(at, *degree ~ S, sep = ))
# Now do the x axis
axis(1, at = at, labels = L)
HTH,
Marc Schwartz
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