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2010 Sep 02
0
extract month data automatically
...quot;3",4] apr_data1 <- Pooraka_data[Pooraka_data$Month=="4",4] ... then i try: p0_mn <- function(dt) {  p0 <- sum(dt==0)/length(dt)    mn <- mean(dt)    c(p0=p0, mn=mn) } rbind(p0_mn(jan_data2),p0_mn(feb_data1), p0_mn(mar_data1),p0_mn(apr_data1),p0_mn(may_data1),p0_mn(jun_data1),p0_mn(jul_data1), p0_mn(aug_data1),p0_mn(sep_data1),p0_mn(oct_data1),p0_mn(nov_data1),p0_mn(dec_data1)) ) > head(Pooraka_data,20); tail(Pooraka_data,20)    Year Month Day Amount 1  1901     1   1    0.0 2  1901     1   2    3.0 3  1901     1   3    0.0 4  1901     1   4    0.5 5  1901     1  ...