Horizon Plots in Base Graphics

August 3, 2012
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(This article was first published on Timely Portfolio, and kindly contributed to R-bloggers)

for background please see prior posts More on Horizon Charts, Application of Horizon Plots, Horizon Plot Already Available, and Cubism Horizon Charts in R

There are three primary graphics routes in R (base graphics, lattice, and ggplot2), and each have their zealots.  Last time in More on Horizon Charts, I used lattice and latticeExtra. This time we will build horizon plots in base graphics, and I was pleased with the result.  Unfortunately, there is one small issue in that the points of change from positive to negative overlap.  Please let me know if you have a solution.

From TimelyPortfolio
From TimelyPortfolio
From TimelyPortfolio
From TimelyPortfolio
From TimelyPortfolio
From TimelyPortfolio
From TimelyPortfolio

Now, let’s implement a for loop and mirror the negative values.

From TimelyPortfolio

With horizon chart functionality in base graphics, hopefully we can add this type now to other packages.  Here is a potential example using quantmod.

From TimelyPortfolio

 

R code in GIST (do raw for copy/paste)

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