search for: jasiewicz

Hi Sorry for banal question How to create empty data frame with for example 30 variables without typying: data.frame(x=1,y=1....) Jarek

Hi I'm looking for solution or function which I can use to sample data frame, to obtain new (smaller) data frame similar to sample() function Jarek Jasiewicz

Dear All! I'm looking for equivalent of Matematica function "Which" which works as follows: z = Which[x<10,0.3, 10<=x<20,0.5, 20<=x<100,1] where x is a vector I can replace it with custom function with set of ifelse but I'm looking for simpler and faster (much faster) solution best wishes Jarek

Hi! How to write in model's formula of type: nls(y~k/(x^n), data=data, start=list(k=1,n=1)) i.e the problem is on x^n, I(x^n) generate error thanks Jarek

...dotplot: labeling coordinates for each point (Qifei Zhu) > 20. Re: Help to select the raw in a data.frame with the max value > (Jorge Ivan Velez) > 21. Re: Nomogram with stratified cph in Design package > (Frank E Harrell Jr) > 22. Problem installing packages (Jarek Jasiewicz) > 23. Re: 3 questions regarding matrix copy/shuffle/compares > (David Winsemius) > 24. Re: issue building my own package... moving from Apple OS to > Windows (Uwe Ligges) > 25. Re: Scatterplot of two groups side-by-side? (Stefan Grosse) > 26. Re: 3 questions r...

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Hi I have the problem with fitting curve to data with lm and glm. When I use polynominal dependiency, fitted values from model are OK, but I cannot recive proper values when I use coefficents to caltulate this. Let me present simple example: I have simple data.frame: (dd) a: 1 2 3 4 5 6 b: 3 5 6 7 9 10 I try to fit it to model: model=glm(b~poly(a,3),data=dd) I have following data

Hi It is probably simple but how to force in plot command number format: 20000, 30000, 40000 etc. instead of 2e+04, 3e+04 etc. example of command: plot(x=data$along, y=data$rzedna,type="l", xlim=c(0,max(data$along)), ylim=c(200,1200), main="", xlab="length", ylab="height", cex.main=2, cex.lab=1.5, cex.axis=1.2, lwd=2) thanks Jarek

since 2.9.0 version I have a problem with installing packages: install.packages("sp") --- Please select a CRAN mirror for use in this session --- Loading Tcl/Tk interface ... done Warning: unable to access index for repository http://piotrkosoft.net/pub/mirrors/CRAN/src/contrib Warning messages: 1: In open.connection(con, "r") : unable to resolve '' 2: In

Hi All I installed JGR library both on ubuntu 7.10 and 7.04 on 7.10 all went fine, but on 7.04 I recived massage: Exception in thread "main" java.lang.NoClassDefFoundError: org/rosuda/JRI/RMainLoopCallbacks at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:620) at

...ary.ca)   67. Re: How to exclude a column by name? (Wacek Kusnierczyk)   68. Labeling barplot bars by multiple factors (Thomas Levine)   69. Re: vegan metaMDS question (Gavin Simpson)   70. Re: Sort matrix by column 1 ascending then by column 2       decending (Kevin W)   71. Re: R in Ubunto (Jarek Jasiewicz)   72. Re: Sort matrix by column 1 ascending then by column 2       decending (Duncan Murdoch)   73. Re: Labeling barplot bars by multiple factors (Mike Lawrence)   74. alternative to built-in data editor (Jose Quesada)   75. no internal function "int.unzip" in R 2.9.0 for Windows       (...

Dear All! I have a few question about proper syntax for fuzzy rules in sets package (there is only little help about it): 1) how to use negation (NOT) operator there is only OR (||) in example it is NOT, !!, !. I also assume that AND is && 2) where it can be set. For example: area %is NOT% large area %is% NOT large area %is% !large etc... 3) how brackets works (as in typical logical