Thank you, thats really good and gives me very good information. Thanks, Martin
Am Donnerstag, den 06.03.2008, 14:35 -0500 schrieb Chuck Cleland: > On 3/6/2008 2:07 PM, Martin Kaffanke wrote: > > Am Mittwoch, den 05.03.2008, 14:38 -0300 schrieb Henrique Dallazuanna: > >> Try this: > >> > >> On 05/03/2008, Martin Kaffanke <[EMAIL PROTECTED]> wrote: > >>> Hi there! > >>> > >>> In my case, > >>> > >>> cor(d[1:20]) > >>> > >>> makes me a good correlation matrix. > >>> > >>> Now I'd like to have it one sided, means only the left bottom side to be > >>> printed (the others are the same) and I'd like to have * where the > >>> p-value is lower than 0.05 and ** lower than 0.01. > >>> > >>> How can I do this? > >> d <- matrix(rexp(16, 2), 4) > >> corr <- cor(d) > >> sign <- symnum(cor(d), cutpoints=c(0.05, 0.01), corr = T, > >> symbols=c("***", "**", "*"), abbr=T, diag=F) > >> > >> noquote(mapply(function(x, y)paste(x, format(y, dig=3), sep=''), > >> as.data.frame(unclass(sign)), as.data.frame(corr))) > > > > Seems that we mark the value itself, but not the p-value. > > > > So lets say, in a way I have to get the lower left half of a > > > > cor(el[1:20]) > > > > Then I need to calc all the values with a cor.test() to see for the > > p-value. And the p-value should be lower than .05 or .01 -> this should > > make the * to the value. > > > > Thanks, > > Martin > > Do you want something like the following, but with the upper triangle > removed? > > corstars <- function(x){ > require(Hmisc) > x <- as.matrix(x) > R <- rcorr(x)$r > p <- rcorr(x)$P > mystars <- ifelse(p < .01, "**|", ifelse(p < .05, "* |", " |")) > R <- format(round(cbind(rep(-1.111, ncol(x)), R), 3))[,-1] > Rnew <- matrix(paste(R, mystars, sep=""), ncol=ncol(x)) > diag(Rnew) <- paste(diag(R), " |", sep="") > rownames(Rnew) <- colnames(x) > colnames(Rnew) <- paste(colnames(x), "|", sep="") > Rnew <- as.data.frame(Rnew) > return(Rnew) > } > > corstars(swiss[,1:4]) > Fertility| Agriculture| Examination| Education| > Fertility 1.000 | 0.353* | -0.646**| -0.664**| > Agriculture 0.353* | 1.000 | -0.687**| -0.640**| > Examination -0.646**| -0.687**| 1.000 | 0.698**| > Education -0.664**| -0.640**| 0.698**| 1.000 | > > I will leave the removing the upper triangle part to you - should be > examples in the archives. > > > ------------------------------------------------------------------------ > > > > ______________________________________________ > > 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. > -- Ihr Partner für Webdesign, Webapplikationen und Webspace. http://www.roomandspace.com/ Martin Kaffanke +43 650 4514224
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______________________________________________ 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.