Hi H, Looking at your example and the help page, it looks to me as though the plot is consistent with the "A" matrix:
Oz Rain Nice Rain 0.25 0.75 Nice 0.60 0.40 # help page A - square coefficient matrix, specifying the links (rows=to, cols=from). In your plot (attached): Rain (col) goes to Rain (row) 0.25 Rain (col) goes to Nice (row) 0.6 Nice (col) goes to Nice (row) 0.4 Nice (col) goes to Rain (row) 0.75 This is a bit confusing, but it seems to do what it says it does. Jim On Thu, Sep 16, 2021 at 10:40 AM H <age...@meddatainc.com> wrote: > > I am using plotmat 1.6.5 (part of the diagram package) in R 3.6 to plot > Markov transition charts but have run into an issue that I was hoping someone > could shed light on here. I did e-mail the maintainer over a month ago but > have not received a reply. > > The issue is that the directional arrows point in the wrong direction. A > brief example: > > stateNames <- c("Rain", "Nice") > Oz <- matrix(c(0.25, 0.75, 0.6, 0.4), nrow = 2, byrow = TRUE) > rownames(Oz) <- stateNames; colnames(Oz) <- stateNames > plotmat(Oz, pos = c(1, 1), lwd = 1, box.lwd = 2, cex.txt = 0.8, box.size = > 0.1, box.type = "circle", box.prop = 0.5, box.col = "light yellow", > arr.length = 0.2, arr.width = 0.2, self.cex = 0.4, self.shifty = 0.01, > self.shiftx = 0.13, main = "") > > In the above example both arrows seem to point in the direction opposite to > what I expect. Has anyone encountered this and know how to fix it? > > Thanks. > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.