Hi, i don't understand how i cant zoom in and zoom out a graphics (plots) exist a package for that? Thanks Ruben
I dont think you can do it quite like you can zoom in and out in a program like 'photoshop'. All you can really do is redraw the plot with a different set of X and Y limits.
Example:
# some data xy=list(x=rnorm(100),y=rnorm(100))
# default plot shows all the data: plot(xy)
# define an interactive 'zoom' function:
zoom=function(){reg=locator(2);plot(reg,type='n')}# click two points at the corners of the zoom region: zoom()
# add the points - dont use 'plot' since this resets the axes: points(xy)
If you've got a complex plot with lots of things on it, then yes, you have to redraw it all again, but then you probably should have put that complex plot into a single function!
Barry
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