Renko Chart in R

Question

I am trying to construct Renko Chart using the obtained from Yahoo finance and was wondering if there is any package to do so. I had a look at the most financial packages but was only able to find Candlestick charts.

For more information on Renko charts use the link given here

Answer 1

Really cool question! Apparently, there is really nothing of that sort available for R. There were some attempts to do similar things (e.g., waterfall charts) on various sites, but they all don't quite hit the spot. Soooo... I made a little weekend project out of it with data.table and ggplot.

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rrenko

There are still bugs, instabilities, and visual things that I would love to optimize (and the code is full of commented out debug notes), but the main idea should be there. Open for feedback and points for improvement.

Caveats: There are still case where the data transformation screws up, especially if the size is very small or very large. This should be fixable in the near future. Also, the renko() function at the moment expects a dataframe with two columns: date (x-axis) and close (y-axis).

Installation

devtools::install_github("RomanAbashin/rrenko")
library(rrenko)

Code

renko(df, size = 5, style = "modern") + 
    scale_y_continuous(breaks = seq(0, 150, 10)) +
    labs(x = "", y = "")

renko(df, size = 5, style = "classic") + 
    scale_y_continuous(breaks = seq(0, 150, 10)) +
    labs(x = "", y = "")

Data

set.seed(1702)
df <- data.frame(date = seq.Date(as.Date("2014-05-02"), as.Date("2018-05-04"), by = "week"),
                 close = abs(100 + cumsum(sample(seq(-4.9, 4.9, 0.1), 210, replace = TRUE))))

> head(df)
         date close
1: 2014-05-02 104.0
2: 2014-05-09 108.7
3: 2014-05-16 111.5
4: 2014-05-23 110.3
5: 2014-05-30 108.9
6: 2014-06-06 106.5