quartz identify bug (PR#11491)

On Wed, 28 May 2008, someone ashamed of his real identity wrote:

[...]

There is always the same problem with theses examples :

#1
x=rnorm(10)
qqnorm(x)
identify(x)

#2
x=rnorm(10)
par(mfrow=c(2,1))
plot(x)
qqnorm(x)
identify(x)

identify does not find any points.

Correct, but it is user error.  From the help for identify:

    x,y: coordinates of points in a scatter plot.  Alternatively, any
         object which defines coordinates (a plotting structure, time
         series etc: see 'xy.coords') can be given as 'x', and 'y'
         left missing.

and qqnorm does not do a scatter plot of 'x'.  You need something like (look 
at qqnorm.default)

xx <- qnorm(ppoints(length(x)))[order(order(x))]
identify(xx, x)

(If there were missing values you would need to work harder.)