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Does chart_Series () function work with a logarithmic axis?

Is there a way to create a log y-axis with chart_Series()

? I am using experimental chart_Series()

, not method chartSeries()

in quantmod

, because it is more convenient when adding additional lines to the graph.

library(quantmod)
POWR <- getSymbols("POWR", auto.assign=FALSE)

# the following attempts did not produce logarithmic axis for y
chart_Series(POWR, log.scale=TRUE)  # like in chartSeries()
chart_Series(POWR, log="y")         # like in plot.default()

With a quick look at the code, it is not possible with existing methods chart_pars()

or chart_theme()

for customization.

Thanks a lot for any help.

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2 answers


If you don't need an OHLC chart, and all you do is, you can use a feature chart.TimeSeries

from the PerformanceAnalytics suite where you have many options for customizing the chart.



chart.TimeSeries(cumprod(1+ ROC(POWR, type = "discrete")[-1,6]),ylog = TRUE,minor.ticks =FALSE)
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Your extra arguments don't work because they are not expected to pass through (through ...

) parameters to any function inside chart_Series

. If you just want to use candles try   chart_Series(log(POWR))



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