Hi all,I would like to draw a simple circle where the color gradient follows
the rule color = 1/(r^2) where r is the distance from the circle. I would also
like to add a color bar with values going from -40 to -110 (and associate those
with the color gradient that fills the circle).
So far I experiemented with draw circle
install.packages('plotrix')require(plotrix)colors<-c('#fef0d9','#fdcc8a','#fc8d59','#e34a33','#b30000')plot(c(-15,15),c(-15,15),type='n')draw.circle(0,
0, 10, nv = 1000, border = NULL, col = colors[1], lty = 1, lwd =
1)draw.circle(0, 0, 8, nv = 1000, border = NULL, col = colors[2], lty = 1, lwd
= 1)draw.circle(0, 0, 6, nv = 1000, border = NULL, col = colors[3], lty = 1,
lwd = 1)draw.circle(0, 0, 4, nv = 1000, border = NULL, col = colors[4], lty =
1, lwd = 1)draw.circle(0, 0, 2, nv = 1000, border = NULL, col = colors[5], lty
= 1, lwd = 1)
but this package does not give easily color gradients and so my solutions
contains 5 same colors filled rings.
Will there be any suggested improvements on my code above?
Thanks a lotAlex
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