On 2/3/2009 9:18 AM, Montserrat, Francesc wrote:
Hello there,
Is there a functionality or command that generates axes in the shape of a capital Greek letter gamma (upside down L) ? I use these for making sediment profiles. I have read through help-lists, tried different things and asked several people but never got a satisfactory result.
I've tried the following:
xx <- c(2,4,6,5.8,5,4,3,1.5,0, 0, 0, 0)
yy <- (0:-11)
plot(NULL, NULL, ylab="depth (cm)", xlim=c(0,8), ylim=c(-12,1), las=1, xaxt="n", bty="n",
xlab="")
axis(3)
points(xx, yy, pch=19, col=2)
mtext(3, text="concentration", line=2.5)
Not bad, but a bit complicated for such a seemingly simple thing...also, the axes do not
intersect, something I would like them to do as in the bty="l" command. I hope
anyone knows a more elegant solution...
As far as I can see there's no reason not to plot the points in the
original call to plot, but I don't think you can make it much more
"elegant" other than writing a function to do it. You will probably
need to use lines() or segments() to draw your Gamma axes right out to
the corners, e.g.
usr <- par("usr")
lines(usr[c(1,1,2)], usr[c(3,4,4)])
Duncan Murdoch
Francesc Montserrat
Spatial Ecology department, NIOO-CEME
Korringaweg 7
4401 NT Yerseke
The Netherlands
+31-(0)113-577470
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