[R-SIG-Mac] tiff output on Mac

[Simon Urbanek]

On Oct 15, 2009, at 13:08 , Michael Denslow wrote:

> Dear R Mac folks,
>
> I have not seen a thread on this so I thought I would get some input
> regarding tiff output on a Mac.
> I am currently running OS 10.6.1 and R 2.9.2 GUI 1.29 Tiger build 32- 
> bit (5464).
>
> I realize that the easiest way to save a plot is to select File, Save
> As. Which outputs a .pdf file. However, if I insert this graphic into
> Microsoft Word and send it to a friend on Windows the file gets
> mangled (the quality is decreased significantly). So I am working on
> just writing high quality tiff files which seem to display well all on
> both platforms. Tiffs also seems to be one of the preferred file types
> for many journals in my field.
>

PNG is the format of choice these days and better supported in  
general. TIFF is more rare, but there is some support.

If you want 1:1 result of what you see in the Quartz window then the  
best way is to use quartz.save() as it maintains sizes to produce  
WYSIWYG results, e.g:

quartz.save("foo.tif","tiff",dpi=600)

Cheers,
Simon


> Here are the options I have found that work on Macs.
>
>
> # requires Ghostscript
> bitmap(file="MacTest.tiff", type = "tifflzw",
> 	height = 7, width = 7, res = 600,
>      units = "in")
> plot(rpois(1:40,10))
> dev.off()
>
>
> tiff('Mactest.tiff', width = 5, height = 5, units = 'in', res = 600)
> plot(rpois(1:100,1))
> dev.off()
>
> quartz(height = 7, width = 7, type = 'tiff', file = 'MacTest.tiff',bg
> = 'white',dpi = 600)
> hist(rpois(1:100,1))
> dev.off()
>
>
> hist(rpois(1:100,1))
> # line are not all dark in output, not sure which tiff type to use...
> dev2bitmap(file = 'MacTest.tiff', type = 'tiff24nc', height = 7, width
> = 7, res = 600,
> 	units = 'in')
>
>
> I have noticed that for bitmap and tiff the font and symbol size seems
> to differ between the R session plot and the output plot.
> Are there other graphic output options that I am missing here? Any
> tips would be most appreciated.
> Thanks in advance,
> Michael
>
> -- 
> Michael Denslow
>
> Graduate Student
> I.W. Carpenter Jr. Herbarium [BOON]
> Department of Biology
> Appalachian State University
> Boone, North Carolina U.S.A.
>
> -- AND --
>
> Communications Manager
> Southeast Regional Network of Expertise and Collections
> sernec.org
>
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