# Little useless-useful R function – Psychedelic Square root with x11()

[This article was first published on

Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.

**R – TomazTsql**, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here)Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.

Yes, the name of today’s function is wacky, because it gives you the flickering feeling when running it with x11() function. In addition is uses simple square root and cosine function to calculate the points in graph to give it psychedelic feeling.

With the following code you can generate the function to draw the “carpet” patterns.

Psychedelics <- function(number_iterations) { for (i in 1:number_iterations){ x <- seq(-5*pi, 5*pi, length.out = runif(1, i*2, i*2+1)) y <- seq(-5*pi, 5*pi, length.out = i) # print(x) print(y) r <- sqrt(outer(x^2, y^2, "+")) # print(r) image(z = exp(-r/8)*cos(r^4), col = brewer.pal(12,"Set3"), xaxt='n', yaxt='n', ann=FALSE) Sys.sleep(0.1) } }

And after function is registered in environment, you can run:

## Run all together - when running on Unix / Windows ## screen size can be altered x11(width = 7,height = 7) Psychedelics(25) graphics.off()

The end result is shown below

As always, the code is available at Github.

Happy R-ing!

To

**leave a comment**for the author, please follow the link and comment on their blog:**R – TomazTsql**.R-bloggers.com offers

**daily e-mail updates**about R news and tutorials about learning R and many other topics. Click here if you're looking to post or find an R/data-science job.

Want to share your content on R-bloggers? click here if you have a blog, or here if you don't.