art


21
Aug 10

Weekend art in R (Part 3)

I have a few posts nearing completion, but meanwhile a weekend break for art. Big thanks to Simon Urbanek and Jeffrey Horner, creators of Cairo, a library for the programming language R. Have you noticed how R can’t anti-alias (fancy way for saying smooth out lines and curves when creating a bit-mapped image)? Cairo can.

Make sure to click the image above for the full version. Here’s my code:

# The Cairo library produces nice, smooth graphics
Cairo(1200, 1200, file="D:/Your/Path/Here/Dots.png", type="png", bg="#FF6A00")
 
# How big should the grid for placing dots be?
myWidth=40
myHeight=40
 
dotsPlaced = myWidth*myHeight
 
# Optional default colors and sizes for dots
myColors = rep(c("#0000F0","#00F000"),dotsPlaced)
myCex = rep(3.2,dotsPlaced)
 
for(i in 1:dotsPlaced) {
	# Change this to allow more of the default color dots to survive
	if(runif(1)<1) {
		myColors[i] = paste("#",paste(sample(c(3:9,"A","B","C","D","E","F"),6,replace=T),collapse=""),collapse="",sep="")
	}
	myCex[i] = runif(1,3,6)
}
 
# Keeping this is marginal
par(oma=c(0,0,0,0))
par(mar=c(0,0,0,0))
 
# Start off with a blank plot. The white dot helps with cropping later
plot(0,0,pch=".",xlim=c(0,40),ylim=c(0,40),col="white", xaxt = "n", yaxt = "n")
 
for(m in 1:myWidth) {
	for(n in 1:myHeight) {
		if(runif(1) < .93) {
			points(n,m,pch=20,col=myColors[((m*n)+n)],cex=myCex[((m*n)+n)])
		}
	}
}
 
dev.off() # Tell Cairo to burn the plot to disk

10
Jul 10

Photo without caption


26
Jun 10

Weekend art in R (Part 2)

I put together four of the best looking images generated by the code shown here:

# More aRt
par(bg="white")
par(mar=c(0,0,0,0))
plot(c(0,1),c(0,1),col="white",pch=".",xlim=c(0,1),ylim=c(0,1))
iters = 500
for(i in 1:iters) {
	center = runif(2)
	size = 1/rbeta(2,1,3)
 
	# Let's create random HTML-style colors
	color = sample(c(0:9,"A","B","C","D","E","F"),12,replace=T)
	fill = paste("#", paste(color[1:6],collapse=""),sep="")
	brdr = paste("#", paste(color[7:12],collapse=""),sep="")
 
	points(center[1], center[2], col=fill, pch=20, cex=size)
	points(center[1], center[2], col=fill, pch=21, cex=size,lwd=runif(1,1,4))
}

Weekend art Part 1 is here.


29
May 10

Weekend art in R (part 1?)


As usual click on the image for a full-size version. Code:

par(bg="black")
par(mar=c(0,0,0,0))
plot(c(0,1),c(0,1),col="white",pch=".",xlim=c(0,1),ylim=c(0,1))
iters = 500
for(i in 1:iters) {
	center = runif(2)
	size = rbeta(2,1,50)
 
	# Let's create random HTML-style colors
	color = sample(c(0:9,"A","B","C","D","E","F"),12,replace=T)
	fill = paste("#", paste(color[1:6],collapse=""),sep="")
	brdr = paste("#", paste(color[7:12],collapse=""),sep="")
 
	rect(center[1]-size[1], center[2]-size[2], center[1]+size[1], center[2]+size[2], col=fill, border=brdr, density=NA, lwd=1.5)
}