Thanks for the question. Here is a sample of the code for my plot:
Top = c(34, 39, 42, 45, 46, 41, 41, 40, 43, 38, 33, 33)
Bottom = c(24, 29, 32, 36, 32, 34, 32,41, 40, 39, 29, 24)
plot(1,1, col = "white", xlim = c(1.3,11.7), ylim = c(0,80), axis =
FALSE, xaxt = "n")
axis(1, at = c(1:12))
polygon(c(c(1:12),c(12:1)), c(top, bottom), col =
adjustcolor("#33a02c",alpha.f = 0.7) ,border = "#33a02c", lty = 4, density =
80, angle = 180)
I would like the hatched lines to all go in the same direction (parallel to the
x-axis) so that I can layer another polygon on top with perpendicular hatches
and you will be able to differentiate between the two.
-----Original Message-----
From: Peter Alspach [mailto:peter.alsp...@plantandfood.co.nz]
Sent: Thursday, April 28, 2016 12:11 AM
To: Simon, Heather <simon.heat...@epa.gov>; r-help@r-project.org
Subject: RE: polygon angle option perpendicular to axis
Tena koe Simon
plot(1:10, 1:10, type='n')
polygon(c(2,3,6,8), c(2,5,5,3), density=20, angle=90) polygon(c(2,3,6,8),
5+c(2,5,5,3), density=20, angle=0)
I don't understand your problem. Perhaps if you "provide[d] commented,
minimal, self-contained, reproducible code" it would help.
HTH ....
Peter Alspach
-----Original Message-----
From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Simon, Heather
Sent: Thursday, 28 April 2016 8:17 a.m.
To: r-help@r-project.org
Subject: [R] polygon angle option perpendicular to axis
I am trying to use the angle option in polygon to create polygons filled with
horizontal and vertical lines. The polygons I am crating are irregular and it
the angle function appears to set the angle of the shading perpendicular to the
polygon sides rather than perpendicular to the axes. Is there any way to set
the angle relative to the axes rather than relative to the polygon sides?
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