heart = function(name){ t = seq(-1,1,len=5000) x = sin(t) * cos(t) * log(abs(t)) y = sqrt(abs(t)) * cos(t) plot(x,y,type='l',axes=FALSE,xlab='',ylab='') text(0,.38,"Happy Valentine's Day",col='red',cex=2.5) text(0,.32,name,col='red',cex=2.5) } heart1 = function(name){ t = seq(0,60,len=100) plot(c(-8,8),c(0,20),type='n',axes=FALSE,xlab='',ylab='') x = -.01*(-t^2+40*t+1200)*sin(pi*t/180) y = .01*(-t^2+40*t+1200)*cos(pi*t/180) lines(x,y) lines(-x,y) text(0,7,"Happy Valentine's Day",col='red',cex=2.5) text(0,5.5,name,col='red',cex=2.5) } cat("Type (1 or 2)? ") type = readLines(n=1) cat("Name? ") name = readLines(n=1) if(type == 1)heart(name) else heart1(name)