>>>>> Dario Strbenac <[email protected]>
>>>>> on Fri, 10 Feb 2017 02:00:08 +0000 writes:
> Good day,
> Could the documentation of graphics devices give some explanation of how
big the bitmap limits are? For example,
>> png("Figure1A.png", h = 7, w = 7, res = 1000, units = "cm")
> Results in Error: unable to start png() device,
This is amazing to me. I see
------------------------------------------------------------------------------
> png("Figure1A.png", h = 7, w = 7, res = 1000, units = "cm")
> plot(1)
> dev.off()
null device
1
> file.info("Figure1A.png")[1:5]
size isdir mode mtime ctime
Figure1A.png 41272 FALSE 644 2017-02-10 17:40:42 2017-02-10 17:40:42
>
------------------------------------------------------------------------------
in three different versions of R I've tried (all were 64-bit Linux).
Note how *small* the file is.
Now, I've also tried a 32-bit version of Linux (Ubuntu 14.04 LTS) and get
a similar result (not exactly the same number of bytes for the file size).
> but the help page of devices doesn't explain that there are any limits or how
> they are determined. The wording of the error message could also be improved,
> to explain that the resolution is too high or the dimensions are too large.
If one/some of those who can reproduce the problem in their
versions of R provide (concise and not hard to read) patches to
the source of R, we'd probably gratefully accept them..
Martin Maechler
>> sessionInfo()
> R version 3.3.2 Patched (2017-02-07 r72138)
> Platform: i386-w64-mingw32/i386 (32-bit)
> Running under: Windows 7 (build 7601) Service Pack 1
> --------------------------------------
> Dario Strbenac
> University of Sydney
> Camperdown NSW 2050
> Australia
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