search for: yseiler

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2007 Mar 28
2
fitting data with conditions
Mich besch?ftig folgende Fragestellung. Ich kenne die Verteilung (lognormal) zus?tzlich weiss ich das 99%, das 90% und das 1% Quantil. Gibt es in R eine M?glichkeit die Lognormalverteilung zu finden, das heisst den korrespondierenden logmean und logsd? Vielen Dank f?r ihre Hilfe Gruss Yvonne
2012 Jan 11
1
R problem: unable to read data in the xls-format in the PerformAnalytics package
Hallo I have the following problem 1) Problem: I am unable to read data in the xls-format in the PerformAnalytics package. While it works well for several commands, e.g. t(table.Stats(msci_ret)) it does not work for other commands, e.g. x <- msci_ret[, c("CH"), drop = FALSE] table.Drawdowns(x) The error code is: Error in checkData(R) : The data cannot be converted into a