On 05 Jul 2023 Joshua Ulrich <[email protected]> wrote:
> On Wed, Jul 5, 2023 at 3:11 PM Mike <[email protected]> wrote:
> > > packageVersion('quantmod')
> > [1] '0.4.23'
> > On an older machine running quantmod 0.4.20 I get this message as a
> > warning instead of an error.
> That chart_Series() code didn't change between those 2 versions of
> quantmod. This went from a warning to an error based on changes in R
> itself. You can verify by running the code below on both machines:
>
> ta <- list("a", "b")
> !is.null(ta) && nchar(ta) > 0
> ## Error in !is.null(ta) && nchar(ta) > 0 :
> ## 'length = 2' in coercion to 'logical(1)'
Yes, it seems to be a change in R. The newer machine is running R
4.3.0, the older is running R 4.2.3.
> The chart_Series() docs say that the TA arg should be "a character
> string of semi-colon seperated TA calls". So you can do this:
>
> chart_Series(data, name = "test data", TA = paste(ta, collapse = ";"))
This did it.
Thanks Josh.
Mike
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