You might want to look at the pretty function. The code that I have
seen often calls that function for the creation of axis tick levels
with min and max as arguments. And its help page suggests that axTicks
may give you exactly what you were seeking.
--
David Winsemius
On Jan 30, 2009, at 11:51 AM, Dennis Fisher wrote:
Colleagues
R 2.8.0; OS X, Vista, Ubuntu Linux
In some instances, when I create a graphic using plot(XVAR, YVAR),
it would be valuable to know the values that R will display on the y-
axis (e.g., if the range of data is 0-70, it might display 0, 10,
30, 50, 70). Is there a simple means to access these values?
Also, in some instances, additional ticks appear between the
displayed values (in this case, at 20, 40, 60). Can I obtain the
list of the positions of all ticks?
Access to this information permits me to tailor the ticks and labels
in a particular manner.
Thanks for any suggestions.
Dennis
Dennis Fisher MD
P < (The "P Less Than" Company)
Phone: 1-866-PLessThan (1-866-753-7784)
Fax: 1-415-564-2220
www.PLessThan.com
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