Candlestick charts using Quandl and Plotly

July 19, 2016
By

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In this post we’ll show how to create candle stick charts using the new plotly 4.0 syntax. You can refer to this older post as well.

This time we’ll use the Quandl package to retrieve stock data. See here for more details.

install.packages("Quandl")
library(Quandl)
df <- Quandl("WIKI/AAPL")
df <- df[,c(1, 9:12)]

names(df) <- c("Date", "Open", "High", "Low", "Close")
df$Date <- as.Date(df$Date)

df <- df[1:1000,]

hovertxt <- Map(function(x, y)paste0(x, ":", y), names(df), df)
hovertxt <- Reduce(function(x, y)paste0(x, " Open, colors = c("#00b386","#ff6666")) %>%
  
  add_segments(y = ~Low, yend = ~High, line = list(width = 1, color = "black")) %>%
  
  add_segments(y = ~Open, yend = ~Close, line = list(width = 3)) %>%
  
  add_markers(y = ~(Low + High)/2, hoverinfo = "text",
              text = hovertxt, marker = list(color = "transparent")) %>% 
  
  layout(showlegend = FALSE, 
         color = "white",
         yaxis = list(title = "Price", domain = c(0, 0.9)),
         annotations = list(
           list(xref = "paper", yref = "paper", 
                x = 0, y = 1, showarrow = F, 
                xanchor = "left", yanchor = "top",
                align = "left",
                text = paste0("AAPL")),
           
           list(xref = "paper", yref = "paper", 
                x = 0.75, y = 1, showarrow = F, 
                xanchor = "left", yanchor = "top",
                align = "left",
                text = paste(range(df$Date), collapse = " : "),
                font = list(size = 8))),
         plot_bgcolor = "#f2f2f2")

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