On 02/06/11 10:13, Duncan Murdoch wrote:
On 01/06/2011 4:06 PM, Yang Zhang wrote:
On Wed, Jun 1, 2011 at 1:04 PM, Yang Zhang<yanghates...@gmail.com>
wrote:
I can plot to png's fine when i run this directly from the top-level
script/console:
png('diamonds.png');qplot(carat,price,data=diamonds);dev.off()
But for some reason it's not working when that's in a function:
(function(){png('diamonds.png');qplot(carat,price,data=diamonds);dev.off()})()
I suspect this is because the qplot's return value must be "returned"
to the top-level, because this works:
(function(){png('diamonds.png');qplot(carat,price,data=diamonds)})();dev.off()
Any hints on how I can plot from within a function? Thanks in advance.
Actually, just found that things work if I do:
print(qplot(...))
Is this just what you need to do to plot from within functions?
If the plotting function is using grid graphics you do. I don't know
where the qplot() function is from, but it looks as though it must be
from a package that uses grid.
Duncan Murdoch
_
qplot is from ggplot2, and is a simpler form of ggplot with limited
features.
David Scott
--
_________________________________________________________________
David Scott Department of Statistics
The University of Auckland, PB 92019
Auckland 1142, NEW ZEALAND
Phone: +64 9 923 5055, or +64 9 373 7599 ext 85055
Email: d.sc...@auckland.ac.nz, Fax: +64 9 373 7018
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