Dear Renata, In your particular case, something like this should do the job:
res=qcc(MDI, type = "xbar.one") names(res) res$limits A general approach (using the example in ?qcc) could be: require(qcc) data(pistonrings) attach(pistonrings) diameter <- qcc.groups(diameter, sample) ex = qcc(diameter[1:25,], type="xbar") names(ex) [1] "call" "data.name" "data" "type" "statistics" "sizes" "center" [8] "std.dev" "nsigmas" "limits" "violations" Since you need the limits, then ex$limits LCL UCL 73.98733 74.01876 contains what you're looking for. HTH, Jorge On Mon, Sep 1, 2008 at 9:14 PM, Renata Mara Schneckenberg Wowk < [EMAIL PROTECTED]> wrote: > Hi Gents, > > > > I need to get the control limits from qcc function. > > > > As follows: > > > > qcc(MDI, type = "xbar.one") > > > > Call: > > qcc(data = MDI, type = "xbar.one") > > > > xbar.one chart for MDI > > > > Summary of group statistics: > > Min. 1st Qu. Median Mean 3rd Qu. Max. > > 0.3266 0.4249 0.4371 0.4333 0.4451 0.4858 > > > > Group sample size: 1 > > Number of groups: 383 > > Center of group statistics: 0.4332557 > > Standard deviation: 0.01520659 > > > > Control limits: > > LCL UCL > > 0.387636 0.4788755 > > > > I want to get LCL and UCL. It is possible ? > > > > Thanks in advance, > > > > Renata > > > > > [[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. > [[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.
