[R] simple graphing question

[Paul Johnson]

On Tue, Apr 8, 2008 at 2:18 PM, stephen sefick <ssefick at gmail.com> wrote:
> #copy and paste this into R
>  f <- (structure(list(TKN = c(0.103011025, 0.018633208, 0.104235702,
>  0.074537363, 0.138286096), RM = c(215, 198, 148, 119, 61)), .Names = c("TKN",
>  "RM"), class = "data.frame", row.names = 25:29))
>  plot(f$TKN~f$RM, type="b")
>
>  I would like to reverse the X-Axis.  How do I do this?
>


Hello, Stephen:

It appears you might be new in R, so let me point out a couple of
things.  First, this works:


f <- data.frame( TKN = c(0.103011025, 0.018633208,
0.104235702,0.074537363, 0.138286096), RM = c(215, 198, 148, 119, 61),
row.names = 25:29)

plot(TKN~RM, data=f, type="b", xlim=rev(range(f$RM)))


Note that I've created your data frame in a more usual way and I've
reversed the x axis in the plot by reversing the range of the X
variable. I've also used the data option to plot

Second, I had  reversed an axis before, but I quickly learned how by
typing the following command:

RSiteSearch("reverse axis")

That opened up the web browser and it listed many items, the second of
which was this:

http://finzi.psych.upenn.edu/R/Rhelp02a/archive/66958.html

thread, the title of which is "How to reverse the sequence of axis Y ? "

Generally, if you try RSiteSearch() and don't find what you need after
exploring a page or two of threads, then you can post here and ask
questions without people saying "go read the posting guide before
posting questions."


Good luck
PJ



-- 
Paul E. Johnson
Professor, Political Science
1541 Lilac Lane, Room 504
University of Kansas