
I would like to ensure that all the text in my plot is in the arial font, like in excel and word.  I have been saving my graphics to a file using the png() function, and have tried the postscript() function.  In the documentation I have not been able to find a way of changing the family argument to an arial font.  Does it exist?  How would I go about creating a png or ps graphic using Arial?  Thank you. 
 
Here is the code.
 
par(family= what?)
plot(1,1, main='Main Title')
 
or
 
postscript('C:/Plot1.ps', family=what?)
 
plot(1,1, main='Main Title')
 
dev.off()
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