R help - May 2008 - figure margins too large for a barplot in png, pdf ok

I've used to have a script with a barplot command it in, preceded by a  
png:

png(graph.file,height=H,width=W)
barplot(t,names.arg=breaks[2:(length(t)+1)],tck=gridlines)

-- worked before R 2.6.2.  When I tried it in R 2.6.2, which I have  
for a while but didn't run with that script, it complained, the  
margins too large, and I've googled the messages from our list where  
neither height nor width had been specified.  Yet here they are  
specified here.

Calling same from R GUI draws the nice barplot in Quartz, and  
replacing png with pdf or postscript does fine.  Other graphs work  
fine with png.  Jpeg also complains; when I try various values for H  
or W, still the same -- how can I subdue the png?

Cheers,
Alexy

On May 6, 2008, at 10:43 PM, Alexy Khrabrov wrote:
> I've used to have a script with a barplot command it in, preceded  
> by a png:
>
> png(graph.file,height=H,width=W)
> barplot(t,names.arg=breaks[2:(length(t)+1)],tck=gridlines)
>
> -- worked before R 2.6.2.  When I tried it in R 2.6.2, which I have  
> for a while but didn't run with that script, it complained, the  
> margins too large, and I've googled the messages from our list  
> where neither height nor width had been specified.  Yet here they  
> are specified here.
>
> Calling same from R GUI draws the nice barplot in Quartz, and  
> replacing png with pdf or postscript does fine.  Other graphs work  
> fine with png.  Jpeg also complains; when I try various values for  
> H or W, still the same -- how can I subdue the png?
What values do H,W have? Keep in mind, the numbers count pixels in  
png. And you have not given us a reproducible example.
> Cheers,
> Alexy
Haris Skiadas
Department of Mathematics and Computer Science
Hanover College

What were H & W?  For png() they are (by default) in pixels, for pdf() in 
inches.

You haven't told us your OS, but I guess Mac OS.  Please update to R 
2.7.0: that offers you two new png() devices for higher-quality plots, and 
various other improvements.  (If you want to use the cairo-based png() at 
other than 72dpi, use R-patched or remember that the pointsize is 
mistakenly in pixels.)

On Tue, 6 May 2008, Alexy Khrabrov wrote:
> I've used to have a script with a barplot command it in, preceded by a
png:
>
> png(graph.file,height=H,width=W)
> barplot(t,names.arg=breaks[2:(length(t)+1)],tck=gridlines)
>
> -- worked before R 2.6.2.  When I tried it in R 2.6.2, which I have for a 
> while but didn't run with that script, it complained, the margins too
large,
> and I've googled the messages from our list where neither height nor
width
> had been specified.  Yet here they are specified here.
Not in this email -- very likely they are too small.
> Calling same from R GUI draws the nice barplot in Quartz, and replacing png
> with pdf or postscript does fine.  Other graphs work fine with png.  Jpeg 
> also complains; when I try various values for H or W, still the same -- how
> can I subdue the png?
>
> Cheers,
> Alexy
>
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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