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Hello, I want do get the point to point distance matrix. Suppose, I have a data frame where the first column is X and second column is Y coordinate of points. I define a function dst(x1,y1,x2,y2) to claculate distance between two points. But I don't know how to tell R to calculate dst for every two points and create a matrix of these distances. Can you give me a little guidance, please? I am quite new to R and programming. Thanks for every advice. Filip Kral. -- View this message in context: h...

Hi I constructed a mixed-effects model from longitudinal repeated measurements of lab values in 22 patients seperated into two groups with the groups as fixed effect using lme. I thought about using the jackknife procedure, i. e., removing any one subject and calculating the fixed effect, to assess the stability of the fixed effect and thereby validate the model. I suppose this has been done in

Dear all, I am looking at the R-help entry below: http://finzi.psych.upenn.edu/R/Rhelp02/archive/26640.html I have a more complicatedt problem. I have a zoo time series frame with 100+ sequences. I want to cycle through them back and forth and compare them to the 1st column at any time. I need also a button to click when I need the viewed-selected sequence (that is being compared to the