search for: avprix16

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2010 May 11
1
merging data frame
...y/10"), class = "factor"), POSITION = c(3, 4, 3, 10, 1, 1, 3, -1, 6), prix = c(1089.75, 328.48, 256.53, 13860, 1843.3, 993, 51.24, -16.85, 2881.5)), .Names = c("DESCRIPTION", "POSITION", "prix"), class = "data.frame", row.names = c(NA, 9L)) avprix16 <- structure(list(DESCRIPTION = c("COPPER May/10", "CORN May/10", "COTTON NO.2 Jul/10", "CRUDE OIL miNY May/10", "GOLD Jun/10", "ROBUSTA COFFEE (10) Jul/10", "SILVER May/10", "SOYBEANS Jul/10", "SPCL HIGH GRA...
2010 May 20
6
writing function
Dear group, I am trying to write functions, but as a beginner, everything is not so obvious. Let's say I want the results in a list of elemts like this : tot1, tot2, etc Here is a function: toto <- function(x,y) { for(i in x:y){ paste(c("tot",i),collapse="")<-(i*2) } } If I type this : >toto(1,5) I get this message error: Error in paste(c("tot",