R help - Nov 2010 - how to remove border while saving R plots ?

I am saving R graph as a jpeg image and the border is plotted defaultly when
you open the image.How can I avoid the border?
small R code is as follows :- 

volume<- seq(100,10,-10)

           jpeg(filename =
"mygraph.jpg",width=366,height=284,units="px")
	{
		pie(volume,main=title,radius=radius ,bty="n",clockwise =
TRUE,col=color,
		font.main = 2,cex.main = 1.8,cex.lab=1.5,border = FALSE)
		
	}
	dev.off()
 when I open this image  automaticaly border is  plotted around the graph.
How to avoid this?

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On Nov 8, 2010, at 5:13 AM, vikrant wrote:
>
> I am saving R graph as a jpeg image and the border is plotted  
> defaultly when
> you open the image.How can I avoid the border?
> small R code is as follows :-
>
> volume<- seq(100,10,-10)
>
>           jpeg(filename =  
> "mygraph.jpg",width=366,height=284,units="px")
> 	{
> 		pie(volume,main=title,radius=radius ,bty="n",clockwise =  
> TRUE,col=color,
> 		font.main = 2,cex.main = 1.8,cex.lab=1.5,border = FALSE)
> 		
> 	}
> 	dev.off()
> when I open this image  automaticaly border is  plotted around the  
> graph.
> How to avoid this?
Read the help pages? The pie help page Argument definition for border  
refers you to the polygon help page... see that handy little link?

"border
the color to draw the border. The default, NULL, means to use  
par("fg"). Use border = NA to omit borders."

I get an error complaining about missing a "color" vector when I try  
to test border=NA  with your code, but presumably a more complete  
example would have demonstrated success. (  I did try putting in  
something for col= but then "radius" was also missing so back to you,
booby.)

-- 

David Winsemius, MD
West Hartford, CT