Candlestick charts using Quandl and Plotly
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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, "<br>", y), hovertxt)
plot_ly(df, x = ~Date, xend = ~Date, hoverinfo = "none",
color = ~Close > 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("<b>AAPL</b>")),
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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