[R-SIG-Mac] tiff output on Mac
simon.urbanek at r-project.org
Thu Oct 15 23:54:53 CEST 2009
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:
> 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")
> tiff('Mactest.tiff', width = 5, height = 5, units = 'in', res = 600)
> quartz(height = 7, width = 7, type = 'tiff', file = 'MacTest.tiff',bg
> = 'white',dpi = 600)
> # 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 Denslow
> Graduate Student
> I.W. Carpenter Jr. Herbarium [BOON]
> Department of Biology
> Appalachian State University
> Boone, North Carolina U.S.A.
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> Communications Manager
> Southeast Regional Network of Expertise and Collections
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