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rquantmod

Use a custom filename in quantmod saveChart function

In R quantmod, when use saveChart to save the plot ,how to assign file name for the result ?

Below code saveChart('my_plot.png', width=13) can't work

library(quantmod)
getSymbols("AAPL")
chartSeries(AAPL)
require(TTR)
addBBands()
saveChart('my_plot.png', width=13)
Solution

  • saveChart gets the filename from object name. Here are alternatives to get the custom filename:

    Set auto assign to FALSE, and name the data as you wish before plotting:

    my_plot <- getSymbols("AAPL", auto.assign = FALSE)
chartSeries(my_plot)
addBBands()
saveChart(.type = "png")

    Use auto assign, then re-assign it to other object before plotting:

    getSymbols("AAPL")
my_plot <- AAPL
chartSeries(my_plot)
addBBands()
saveChart(.type = "png")

    Use png graphics device:

    png("my_plot.png")
chartSeries(AAPL)
addBBands()
dev.off()