berryFunctions (version 1.4)

smoothLines: draw smoothed lines

Description

draw smoothed lines with an n-level partially transparent haze

Usage

smoothLines(x, y, lwd=1, col=1, n=5, alpha=0.1, ...)

Arguments

x

numrical. x-coordinates. x can be a matrix, then the y coordinates are taken from the second column

y

numerical. y-coordinates

lwd

single integer. line width

col

color. DEFAULT: 1 (black)

n

single integer. number of transparent lines overlayed with sinking line widths. DEFAULT: 5

alpha

Transparency of color. DEFAULT: 0.1 (very transparent)

...

further arguments as in lines

Value

• none, draws lines

See Also

lines, col2rgb, rgb

Examples

x <- 1:5  ; y <- c(0.31, 0.45, 0.84, 0.43, 0.25)
plot(x,y)
smoothLines(x,y)
#png("smoothLines.png")
par(mar=c(2,2,2,0)+.5)
plot(1:100, las=1, type="n", main="usage of blines(x,y, lwd, col, n, alpha ...)")
abline(h=0:10*10, v=0:10*10, col=6); box()
for(i in 0:9) { smoothLines(x=c(0,10,25,35), y=c(i*10, i*10, i*10+12, i*10+7), lwd=i)
                text(25, i*10+5, paste("n=5,lwd=", i, sep="")) }
for(i in 0:9) { smoothLines(x=c(40,50,65,75), y=c(i*10, i*10, i*10+12, i*10+7), n=i)
                text(65, i*10+5, paste("n=",i,",lwd=1", sep="")) }
for(i in 0:9/20) { smoothLines(x=c(80,90,105), y=c(i*200, i*200+12, i*200+12), alpha=i)
                   text(90, i*200+10, paste("alpha=", i, sep=""), adj=0) }
text(5,10, "default", adj=c(0.5,-0.2)); text(45,50, "default", adj=c(0.5,-0.2))

#dev.off()