[R] plotting question

[Gavin Simpson]

On Tue, 2006-10-31 at 16:52 -0500, Leeds, Mark (IED) wrote:
> i have the axis line of code  below in a plotting command and it works
> nicely  but it puts tick values at every 5 of lt and i would like a tick
> value at every value of lt. i read about pretty() but that sounded
> tricky so instead , since i want a tick mark at every value of lt ( it's
> discrete and goes from o to some max value usually arounsd 35 or 40 )
>  
> i changed the line to  at = seq(1,max(lt) ) but that gave me no
> tickmarks ?

?unique

> lt <- sample(1:40, 50, replace = TRUE) # dummy data
> lt
 [1] 37 30 38 33 13 19  6 39 15 21  5 11  5  5 32  1 23 20 12 21 35 32
34 26 39
[26] 30 11 36 26 12 37 27 26  9 23  2 24  4 20  3  1  7 27 37 31 25 38
29 29 17
> plot(lt, type = "l")
> axis(4, at = unique(lt))

Looks a bit weird because of the number of unique values in lt, but will
look OK with the data series you posted earlier.

Also, 

> plot(lt, type = "l")
> axis(4, at = pretty(range(lt)),line=0.75,tick=TRUE)

doesn't look right on my default device, do you really want to move the
axis away from the plot margin?

HTH

G

>  
> any help is appreciated. thanks.
>  
> #-----------------------------------------------------------------------
> --------
>  
> axis(4, at = pretty(range(lt)),line=0.75,tick=TRUE)
>  
> #-----------------------------------------------------------------------
> ------
> --------------------------------------------------------
> 
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