hi david
Thank you very much for the hack of draw.circle that you proposed me.
I don't understand some part of the code, why do you pass radius as a
vector in the function (if I understand well the purpose of the for
loop) ? Also what is ymult?
If I set the radius to the value 0.85 as I wanted (so as a scalar), I
don't see any difference in the result when I call this function
draw.circle2, the stripes are not drawn inside the circle. I don't know
if it is normal.
Thanks, best
Jean-Philippe
On 14/06/2017 19:29, David Winsemius wrote:
On Jun 14, 2017, at 10:18 AM, David Winsemius <dwinsem...@comcast.net> wrote:
On Jun 14, 2017, at 9:46 AM, Jeff Newmiller <jdnew...@dcn.davis.ca.us> wrote:
I don't see a question. If your question is whether R supports pattern fills,
AFAIK it does not. If that is not your question, ask one.
--
Sent from my phone. Please excuse my brevity.
On June 14, 2017 7:57:41 AM PDT, jean-philippe
<jeanphilippe.fonta...@gssi.infn.it> wrote:
dear R users,
I would like to fill a circle with yellow stripes instead of a uniform
yellow color. To draw the circle I used the following command after
having loaded the (very nice !) plotrix library :
I finally understood the question and it needs a hack to the draw.circle
function in plotrix since the angle and density arguments don't get passed in:
First get code for draw.circle:
------
draw.circle # then copy to console and edit
draw.circle2 <- function (x, y, radius, nv = 100, border = NULL, col = NA, lty
= 1,
density=NA, angle=45, lwd = 1 )
{
xylim <- par("usr")
plotdim <- par("pin")
ymult <- getYmult()
angle.inc <- 2 * pi/nv
angles <- seq(0, 2 * pi - angle.inc, by = angle.inc)
if (length(col) < length(radius))
col <- rep(col, length.out = length(radius))
for (circle in 1:length(radius)) {
xv <- cos(angles) * radius[circle] + x
yv <- sin(angles) * radius[circle] * ymult + y
polygon(xv, yv, border = border, col = col, lty = lty,
density=density, angle=angle,
lwd = lwd)
}
invisible(list(x = xv, y = yv))
}
Now run your call to pdf with draw.circle2 instead of draw.circle
Best;
David.
library(plotrix)
pdf("MWE.pdf",width=8, height=8)
plot(seq(-12.5,-8.7,length.out=100),seq(-11.3,-8.3,length.out=100),type="l",col="red",xlim=c(-12.5,-8.7),ylim=c(-11.5,-8.5))
par(new=T)
plot(seq(-12.5,-8.7,length.out=100),seq(-11.7,-8.7,length.out=100),type="l",col="red",xlim=c(-12.5,-8.7),ylim=c(-11.5,-8.5))
par(new=T)
polygon(c(seq(-12.5,-8.7,length.out=100),
rev(seq(-12.5,-8.7,length.out=100))), c(seq(-11.3,-8.3,length.out=100),
rev(seq(-11.7,-8.7,length.out=100))),
col = alpha("red",0.4), border = NA)
par(new=T)
draw.circle(-12.85,-10.9,0.85,nv=1000,border=NULL,col="yellow",lty=1,lwd=1)
dev.off()
Agree that the coding question remains unclear, so not using the offered
example but responding to the natural language query. The `polygon` function
has 'density' and 'angle' argument that with 'col' and 'lwd' can make slanted
fill lines. This is a modification of hte first example on `?polygon`?
x <- c(1:9, 8:1)
y <- c(1, 2*(5:3), 2, -1, 17, 9, 8, 2:9)
op <- par(mfcol = c(3, 1))
for(xpd in c(FALSE, TRUE, NA)) {
plot(1:10, main = paste("xpd =", xpd))
box("figure", col = "pink", lwd = 3)
polygon(x, y, xpd = xpd, col = "orange", density=3, angle=45, lwd = 5, border =
"red")
}
The polygon function is _not_ in pkg::plotrix.
It looks a bit ugly since they are not real data, but it is the
simplest
MWE example that I found.
Thanks, best
Jean-Philippe
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
David Winsemius
Alameda, CA, USA
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
David Winsemius
Alameda, CA, USA
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Jean-Philippe Fontaine
PhD Student in Astroparticle Physics,
Gran Sasso Science Institute (GSSI),
Viale Francesco Crispi 7,
67100 L'Aquila, Italy
Mobile: +393487128593, +33615653774
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
