[R] x axis point labels

Michaell Taylor michaell.taylor at reis.com
Mon Sep 24 22:58:13 CEST 2001

I am attempting to manually specify x axis value labels (NOT x axis label as 
in xlab) on a density plot.  Generally speaking, I would like to erase the 
default x axis point labels and replace them with arbitrary x axis point 
labels relating to specific CDF points.

I am sure this can be done, but it isn't obvious to me how.  Has anyone done 
this before?

My R code follows if it helps (new to R so please excuse any awkwardness that 
you notice.)

plot(density(gdp), main="Probability Distribution\n of 2002 US GDP 
	xlim=c(-9,9), ylim=c(0,.3),xlab="Percent Real GDP Growth")
newline _ cbind(c(gdp[5000/2],gdp[5000/2]),c(0,.25)) 
newline1 _ cbind(c(gdp[.05*5000],gdp[.05*5000]),c(0,.15)) 
newline2 _ cbind(c(gdp[.95*5000],gdp[.95*5000]),c(0,.15)) 
newline3 _ cbind(c(gdp[.99*5000],gdp[.99*5000]),c(0,.1)) 
newline4 _ cbind(c(gdp[.01*5000],gdp[.01*5000]),c(0,.1)) 
lines(newline, lwd=2)
text(gdp[5000*.05],.19,"0.05 Prob.\nForecast")
text(gdp[5000*.95],.24,"0.95 Prob.\nForecast")
text(gdp[5000*.99],.14,"0.99 Prob.\nForecast")
text(gdp[5000*.01],.14,"0.01 Prob.\nForecast")


Michaell Taylor, PhD

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