:[EMAIL PROTECTED] On Behalf Of Jonathan Lees
> Sent: Monday, February 26, 2007 7:26 AM
> To: r-help@stat.math.ethz.ch
> Subject: [R] PLotting R graphics/symbols without user x-y scaling
>
>
> Is it possible to add lines or other
> user defined graphics
> to a plot in R that does n
You can use par("usr") to get the min/max coords of the plot and then
use that. For example, this will plot a red dot in the middle of the
plot area regardless of the coordinates:
plot(1:10) # sample plot
usr <- par("usr")
points(mean(usr[1:2]), mean(usr[3:4]), pch = 20, col = "red") # red dot
Hi
Jonathan Lees wrote:
> Is it possible to add lines or other
> user defined graphics
> to a plot in R that does not depend on
> the user scale for the plot?
>
> For example I have a plot
> plot(x,y)
> and I want to add some graphic that is
> scaled in inches or cm but I do not want the
> graph
Is it possible to add lines or other
user defined graphics
to a plot in R that does not depend on
the user scale for the plot?
For example I have a plot
plot(x,y)
and I want to add some graphic that is
scaled in inches or cm but I do not want the
graphic to change when the x-y scales are
changed
