search for: feb_data1

Hi R-expert, I try to eliminate 29 Feb but I got an error message below: feb_data1 <- Pooraka_data[Pooraka_data$Month=="2",] feb_28days <- feb_data1 [feb_data1$Day=="28",] feb_29days <- feb_data1 [feb_data1$Day=="29",] ## delete 29 Feb feb_no_29 <- feb_data1 [-(feb_29days),] feb_no_29 <- feb_data1 [-(feb_29days),] Error in xj[i] : inv...

Hi, I would like to extract monthly data automatically using a code.  Given are my sample data. I know how to do one by one: jan_data1 <- Pooraka_data[Pooraka_data$Month=="1",4] feb_data1 <- Pooraka_data[Pooraka_data$Month=="2",4] mar_data1 <- Pooraka_data[Pooraka_data$Month=="3",4] apr_data1 <- Pooraka_data[Pooraka_data$Month=="4",4] ... then i try: p0_mn <- function(dt) {  p0 <- sum(dt==0)/length(dt)    mn <- mean(dt)    c(p0=p0, mn...