Hi Simon,

	Thank you for the information about the R image rendering issue in  
Preview and Acrobat. I am happy to learn that my problem is not  
related to R and Quartz.

	As you suggested, I zoomed in and out with Preview but the white  
lines did not disappear entirely. However, this is OK for the type of  
analysis that I have performed.

	The real problem that I have is converting it to a tiff file. I must  
submit a tiff file to the journal where the image will be published.  
When I use Preview for conversion, the image looks like a Scottish  
plaid. The white lines are there but they look they are part of the  
plaid.


	Acrobat, on the other hand, is totally unacceptable. The image  
shading disappears entirely and a series of dots appear within the map  
boundary. The legends have no shading what so ever, thus converting it  
to a tiff file won't work. I have successfully use this method for  
transforming color R images in pdf to tiff.


	Question: Is it possible to export or convert a R image directly to a  
tiff file without going Preview?

Thank you,

Paul



	

	

	

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