search for: augustenburg

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2000 Jan 12
1
Usage of p/d/qnorm
...pect to a varying x cut off value. How could one possibly formulate using p/d/qnorm e.g. the specificity: f(x)= number of positive tests at cut off x / total number of truly positives ? Thank You, Ralf Herold # Charite Campus Virchow-Klinikum # Medizinische Fakultaet der Humboldt-Universitaet # Augustenburger Platz 1, D-13353 Berlin # ralf.herold at charite.de pgp welcome -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in t...
2000 Feb 03
1
Merge?
......], by and merge [...] do not exist in R.", but perhaps someone can suggest such a merge function, just as a "by" function was suggested by Peter Dalgaard on 31. January? Thank You, Ralf Herold # Charite Campus Virchow-Klinikum # Medizinische Fakultaet der Humboldt-Universitaet # Augustenburger Platz 1, D-13353 Berlin # ralf.herold at charite.de pgp welcome -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in t...
2003 Feb 13
5
ESRI shape file import and time-space models
Dear R user, I am running R under Windows 2000. I am looking for a routine for importing - shape files (ESRI) into R - dbase files (FOXPRO) into R and I am looking for time-space models for description and prediction of Bernoulli-, Binomial- and Poissonvaraibles. Thank's a lot for a reply. Sincerely yours, Ekkehardt Altpeter Swiss Federal Office of Public
2000 Oct 17
2
Percentile function
Is there an R function that inputs a value and a vector, and returns the percentile corresponding to the value? Something like pvalue<-function(x,vector){mean(x>=vector)} but with interpolation. Given the above function, is there a way to do the following without the loop: for(i in 1:10) y[i] <- pvalue(x[i],vector) where x and y are numeric vectors of length 10? -- Art Salwin