Hello, all-- I am having some fun playing with the graphing in quantmod-- very nice! I am writing a function to calculate (and hopefully plot) support and resistance lines, but the usual plot call of "abline(h=value)" does not seem to work. Here's my code:
require(quantmod) AAPL<-getYahooData("AAPL") candleChart(AAPL,subset="last 3 months",theme="white") addMACD() abline(h=290,col="red") The same sequence works fine if I'm just using a plain vanilla "plot" call, however. What am I missing? Do I need to call the line as a technical study using addTA? Not sure how to make a straight line constant doing that... I'm sure it should be obvious, since my searching on google hasn't turned up anything. So I'm getting ready for a "face-palm" moment if anyone can point me in the right direction! --------------------------------------- David L. Van Brunt, Ph.D. mailto:dlvanbr...@gmail.com On Sun, Nov 21, 2010 at 10:29 AM, David Winsemius <dwinsem...@comcast.net>wrote: > stop() throws an error but the side effect is to pop out of whatever > environment you may be in and return to the top-level. I thought that was > what you wanted. If not, then please produce a better problem description > with code as requested in the posting guide. > > > On Nov 21, 2010, at 10:12 AM, madr wrote: > > >> I try to use stop(), but i get: >> Error in eval.with.vis(expr, envir, enclos) : >> -- >> View this message in context: http://r.789695.n4.nabble.com/ >> > > And learn to include context. > > > -- > > David Winsemius, MD > West Hartford, CT > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.