Hello,
In Windows it's
.Internal(symbols(x, y, type, data, inches, bg, fg, ...))
And this is what I've found:
file r-2.15.2\src\main\graphics.c
function GSymbol
/*
* Force line type LTY_SOLID
* i.e., current par(lty) is ignored when drawing symbols
*/
gc.lty = LTY_SOLID;
So, the op is out of luck, lty solid is hard-coded in the C source.
Maybe plotrix::draw.circle, like Jose suggested.
Rui Barradas
Em 12-01-2013 18:53, Ben Bolker escreveu:
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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