Question

我想在quantmod中绘制两个图表，然后将它们放在一个pdf中如何实现这一目标？下面的代码示例，在此代码中，我生成两个单独的pdf但如何将它们合并到一个文件中？

  getSymbols("AAPL", src = "yahoo", from = start, to = end)
  getSymbols("GOOGL", src = "yahoo", from = start, to = end)


  candleChart(AAPL, multi.col=TRUE, theme='white') 
  addMACD()
  dev.copy(pdf, "chart1.pdf")

  candleChart(GOOGL, multi.col=TRUE, theme='white') 
  dev.copy(pdf, "chart2.pdf")
  dev.off()

有什么想法吗？

Answer 1

你可以这样做：

start = "2018-01-01"
end = "2018-04-01"
getSymbols("AAPL", src = "yahoo", from = start, to = end)
getSymbols("GOOGL", src = "yahoo", from = start, to = end)


pdf(file = "charts.pdf")
par(mfrow=c(2,1))
chart_Series(AAPL, TA = "add_MACD();") 
chart_Series(GOOGL) 
dev.off()

Quantmod多个图表在一个pdf中

1 个答案: