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(This article was first published on <strong><a href="http://www.r-chart.com/2017/07/investigating-cryptocurrencies-using-r.html"> R-Chart</a></strong>, and kindly contributed to <a rel="nofollow" href="https://www.r-bloggers.com/">R-bloggers)</a> </div>
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<p>Cryptocurrencies are a fascinating phenomenon and excellent data source for analysis with R.  This post will introduce how to get a list of available currencies into R.  Wikipedia maintains a page with a list of cryptocurrencies.  These can be read from HTML into a data frame.</p>
<p><span><b>library(httr)</b></span><br><span><b>library(XML)</b></span><br><span><b>results = GET(“https://en.wikipedia.org/wiki/List_of_cryptocurrencies”)</b></span><br><span><b>doc = readHTMLTable(doc=content(results, “text”))</b></span><br><span><b>View(doc[1])</b></span></p>
<p>This list is not complete.  Also, an API would be preferable to reading a wiki page.  A publicly available API at cryptocompare.com provides similar information in JSON format.</p>
<p><span><b>library(jsonlite)</b></span><br><span><b>library(data.table)</b></span><br><span><b>response = fromJSON(‘https://www.cryptocompare.com/api/data/coinlist’)</b></span><br><span><b>df = data.table::rbindlist(response$Data, fill=TRUE)</b></span><br><span><b>View(df)</b></span></p>
<p>With a bit of shiny code, this data can be served up in a web application and published to shinyapps.io… so you can skip the R coding and review the data here if you prefer:</p>
<p><a rel="nofollow" href="https://casimir.shinyapps.io/cryptocurr/" target="_blank">https://casimir.shinyapps.io/cryptocurr/</a></p>
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