data viz

Tutorial: Crypto dashboard in R shiny

Okay, let’s face it, the whole world has been into cryptocurrencies lately. Bitcoin (BTC), the first cryptocurrency (in fact, the first digital currency to solve the double-spend problem) introduced by Satoshi Nakamoto has become bigger than well-established companies.  A lot of crypto followers and investors are looking to keep track of its daily price to better read the market and make moves accordingly. That’s why I have decided to help them out and create a crypto-dashboard.

Next to this, I am developing a tutorial to help an R user build his/her own Crypto Dashboard. The result of the tutorial will look something like my app on shinyapps.

Please let me know if you are interested in this and I will keep you updated!

The dashboard mainly uses a couple of packages: shiny and dygraphs.

Shiny

Shiny is a package for interactive data visualization. It offers input components and a reactive framework to filter your data from those components and display them in a graph. For the crypto dashboard I am using the following components

  • Dropdown to select the cryptocurrencies. It is a multiple select, this means that multiple currencies can be chosen at the same time. Each currency will have their own (colored) line in the graph.
  • Dropdown to select the output. A user can select from “Price” and “Market Cap”. The output values will be shown on the y-axis in the graph.
  • DateRange component: to select the start and end data for the graph.
  • DygraphOutput: this is a binding to a plot generated with the Dygraphs package, see below.

Dygraphs

Dygraphs is a fast, flexible open source JavaScript charting library. It allows users to explore and interpret dense data sets. The chart is  interactive: you can mouse over to highlight individual values. You can click and drag to zoom. Double-clicking will zoom you back out. Shift-drag will pan. You can change the number and hit enter to adjust the averaging period. Here are the features as described on their website:

  • Handles huge data sets: dygraphs plots millions of points without getting bogged down.
  • Interactive out of the box: zoom, pan and mouseover are on by default.
  • Strong support for error bars / confidence intervals.
  • Highly customizable: using options and custom callbacks, you can make dygraphs do almost anything.
  • dygraphs is works in all recent browsers. You can even pinch to zoom on mobile/tablet devices!
  • There’s an active community developing and supporting dygraphs.

 

 

Crypto-dashboard

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