Animated 3D Plot of Ammonia Toxics Criteria

January 7, 2016

(This article was first published on AdventuresInData, and kindly contributed to R-bloggers)

In 2013, EPA published final national recommended water quality criteria for the protection of aquatic life from the toxic effects of ammonia in freshwater.

These criteria are a function of water temperature and pH, so that the criteria concentration value changes with changing pH and temperature.  Frequently the criteria values are plotted as a slice with one of the two variables held constant.  But I wanted to see what the total criteria space looked like.  One way to do this is with a 3D plot with the independent temperature and pH variables on the x and y axes (the horizontal plane) and the dependent Ammonia concentration on the z axis (vertical).  Since shape of the surface is difficult to see from any one perspective, animation helps show the overall shape.

This plot was developed in R using plot3D and animation libraries.

To leave a comment for the author, please follow the link and comment on their blog: AdventuresInData. offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web Scraping) statistics (regression, PCA, time series, trading) and more...

If you got this far, why not subscribe for updates from the site? Choose your flavor: e-mail, twitter, RSS, or facebook...

Comments are closed.

Search R-bloggers


Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)