search for: 1980l

Hi R users, I have a dataset with multiple variables and i'm trying to weigh average depths for fish species per year by their abundance (CPUE. I have tried the weighted.mean function but as i have two columns for the x value the lenghts differ with the w (CPUE). How do I solve this problem? So far I have tried this: data<-by(allspecies, list(allspecies$Depth, allspecies$Year),

Dear all, I'm trying to make an R code for the drought severity index (DSI) developed by Philips and McGregor (1998). You can refer to the description of the algorithm on page 19 from http://dissertations.port.ac.uk/229/01/MaloneS.pdf The code is given in Excel as the following and can be found on page 60 from the same link. C7 = IF(C6<0,IF(@SUM(A6:A1)<0,C6+A6,"0"),

All, What would be the most efficient way to load the data at the following address into a dataframe? http://ratings.fide.com/top.phtml?list=men Thanks, David -- View this message in context: http://r.789695.n4.nabble.com/Loading-Chess-Data-tp4642006.html Sent from the R help mailing list archive at Nabble.com.

..., 121L, 253L, 385L, 517L, 649L, 781L, 913L, 1045L, 1177L, 1309L, 1441L, 1573L, 1705L, 1837L, 1969L, 2101L, 2233L, 2365L, 2497L, 2629L, 2761L, 2893L, 3025L, 3157L, 3289L, 3421L, 3553L, 3685L, 3808L, 3929L, 132L, 264L, 396L, 528L, 660L, 792L, 924L, 1056L, 1188L, 1320L, 1452L, 1584L, 1716L, 1848L, 1980L, 2112L, 2244L, 2376L, 2508L, 2640L, 2772L, 2904L, 3036L, 3168L, 3300L, 3432L, 3564L, 3696L, 3819L, 3940L, 4017L), .Label = c("01.01.1962", "01.01.1963", "01.01.1964", "01.01.1965", "01.01.1966", "01.01.1967", "01.01.1969", &q...