R help - Feb 2012 - question on axis labels

Hi All,

I'm trying to label my plot axis with times (HH:MM) that correspond to a
numeric index (values 0:6) for my time variable.  I'd like to plot
"08:00", "12:00",  and so on, instead of 0 through 6.

I have used the following line of code: 

axis(1, 0:6, labels=c("08:00", "12:00", "16:00",
"20:00", "24:00", "04:00", "08:00"),
cex=0.8)

[I've used both the 0:6 and at=c(0:6), with no effect.]

My labels come out with a 0 - 6, location dependent, superimposed over my colon
in my HH:MM string.  So 08:00 looks like 08000, 12:00 looks like 12100.

Any way of suppressing the at locations?

I'm using version 2.14.0 on a mac

My program pulls in the following packages (not sure relevant):

require (Hmisc)
require (lattice)
require (gplots)


Thanks for any suggestions,

Gerard

This works for me:
> plot(0:6, runif(7), xaxt="n")
> axis(1, at=0:6, labels=c("08:00", "12:00",
"16:00", "20:00", "24:00", "04:00",
"08:00"), cex=0.8)
>
You need the xaxt="n" in the plot statement, and the correct form is
at=0:6

Sarah

On Mon, Feb 20, 2012 at 6:39 PM, Gerard Smits <g_smits at verizon.net>
wrote:
> Hi All,
>
> I'm trying to label my plot axis with times (HH:MM) that correspond to
a numeric index (values 0:6) for my time variable. ?I'd like to plot
"08:00", "12:00", ?and so on, instead of 0 through 6.
>
> I have used the following line of code:
>
> axis(1, 0:6, labels=c("08:00", "12:00",
"16:00", "20:00", "24:00", "04:00",
"08:00"), cex=0.8)
>
> [I've used both the 0:6 and at=c(0:6), with no effect.]
>
> My labels come out with a 0 - 6, location dependent, superimposed over my
colon in my HH:MM string. ?So 08:00 looks like 08000, 12:00 looks like 12100.
>
> Any way of suppressing the at locations?
>
> I'm using version 2.14.0 on a mac
>
> My program pulls in the following packages (not sure relevant):
>
> require (Hmisc)
> require (lattice)
> require (gplots)
>
>
> Thanks for any suggestions,
>
> Gerard
>
-- 
Sarah Goslee
http://www.functionaldiversity.org