[R] Drawing a dotted circle.

[Ben Bolker]

  A wild guess which I can't check right now, but: is there something
funny/different with the Windows graphics driver that draws the result
of a dashed line based on many closely spaced points as a solid line?
i.e., it draws a dash for the beginning of every segment within the
line, even if they are close together, resulting in overlapping dashes
-> a solid line?  Don't have time to dig into

.External.graphics(C_symbols, x, y, type, data,
        inches, bg, fg, ...)

 right now ...


On 13-01-12 01:41 PM, Rui Barradas wrote:
> Hello,
> 
> Checks ok on Ubuntu 12.04 but not on Windows 7, where it plots a solid
> line circle.
> 
> symbols(0, 0, circles = 1, inches = FALSE, fg = 'gray', lty=2)
> sessionInfo()
> R version 2.15.2 (2012-10-26)
> Platform: x86_64-w64-mingw32/x64 (64-bit)
> 
> locale:
> [1] LC_COLLATE=Portuguese_Portugal.1252 LC_CTYPE=Portuguese_Portugal.1252
> [3] LC_MONETARY=Portuguese_Portugal.1252 LC_NUMERIC=C
> [5] LC_TIME=Portuguese_Portugal.1252
> 
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods base
> 
> loaded via a namespace (and not attached):
> [1] tools_2.15.2
> 
> 
> Hope this helps,
> 
> Rui Barradas
> Em 12-01-2013 17:02, Ben Bolker escreveu:
>> Ved P. Sharma <vedsharma <at> gmail.com> writes:
>>
>>> I am trying to draw a dotted circle by using symbols command:
>>>
>>> symbols(0, 0, circles = 1, inches = FALSE, fg = 'gray', lty=2)
>>>
>>> But it gives me a solid line. I was just wondering whether am I making a
>>> mistake?
>>>
>>    Works for me (although it's a dashed line; lty=3 gives a dotted
>> line) on Ubuntu 10.04, R-devel.  Results of sessionInfo() please?
>>
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>