[R-SIG-Mac] tiff output on Mac

[Michael Denslow]

>> 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

Thank you David and Simon,

This is very helpful. I was not aware of quartz.save() or the Grab utility.
Also I will have another look at the png format.

Michael

>
>
>> 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 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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