[R-SIG-Finance] Quantmod problem: calling Charts from function

[Jeff Ryan]

This has been addressed quite a few times on the list and in the docs. 

Given the desire for interactive additions of TA etc, the object is plotted automatically via plot via print. 

Simply wrap you TA calls with plot and that should do the trick. 

Alternately you can add the args as a character string to the TA param of chartSeries. 

The newest quantmod on CRAN has a new function for plotting called chart_Series which may be of interest to try out. It will be to chartSeries what ggplot2 is to ggplot. i.e. a new and improved version, albeit sans the addition of the numbering confusion. It will eventually migrate to chartSeries proper. 

Best,
Jeff





On Nov 18, 2010, at 11:54 AM, "Daniel Probst" <daniel.probst at web.de> wrote:

> Hello,
> 
> I get different behaviour calling candleChart directly versus calling it in a function: only one of multiple technical analyses is plotted.
> 
> Example:
> #####################################
> library(quantmod)
> getSymbols("AAPL",src="yahoo") 
> # WORKS
> candleChart(AAPL,multi.col=TRUE,theme="white")
> addBBands()
> addMACD()
> addMACD()
> # Doesn't work
> test<- function(x) {
>    candleChart(x,multi.col=TRUE,theme="white")
>    addBBands()
>    addMACD()
>    addMACD()
> }
> test(AAPL)
> # only shows first MACD not 2nd unlike in direct call
> ###########################
> 
> Any pointers where the different behaviour comes from?
> Many thanks
> Daniel Probst
> ___________________________________________________________
> Neu: WEB.DE De-Mail - Einfach wie E-Mail, sicher wie ein Brief!  
> Jetzt De-Mail-Adresse reservieren: https://produkte.web.de/go/demail02
> 
> _______________________________________________
> R-SIG-Finance at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-sig-finance
> -- Subscriber-posting only. If you want to post, subscribe first.
> -- Also note that this is not the r-help list where general R questions should go.