[R] Put short string labels vertically near tick marks on bottom axis

[David Winsemius]

On May 13, 2014, at 2:52 PM, Hurr wrote:

> A month ago I was considering the forum topic
> “Label axis tick marks with a simple function of axis value”
> and haven’t had time to work much on it.
> Since then I have written a little program that makes 
> period labels for the frequency axis, but I don’t know how to attach them.
> I expected the following code to work.
> Later there will be more requirements like 
> 1) labels should be vertical
> 2) the bottom of the labels should line up with the ticks
> 3) requirements beyond today’s consideration
> 
> horAxisLims=c(0,7200)
> verData=c(1,365,809,1252,1753,2191,2922,3409,3896,4383,4819,5255,5691,6128,6564,7000)
> horData=c(1,300,800,1200,1700,2100,2900,3400,3800,4300,4800,5200,5600,6100,6500,7000)
> #not at tics 
> horTicLocs=c(1,365,809,1252,1753,2191,2922,3409,3896,4383,4819,5255,5691,6128,6564,7000)
> horLabels=c(”1Yr”,”1Da”,”10.8Hr”,”7Hr”,”5Hr”,”4Hr”,”3Hr”,”2.57Hr”,”2.25Hr”,”2Hr”,”1.82Hr”,”1.67Hr”,”1.54Hr”,”1.43Hr”,”1.34Hr”,”1.25Hr”)
> plot(horData, verData,xaxt='n',xlim= horAxisLims)
> axis(1,tick=TRUE,at= horTicLocs, labels= horLabels) 
> 

Yecchh. Pasted code throws an error in the horLabels assignment. "Smart quotes". Use a proper text editor.

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David Winsemius
Alameda, CA, USA