search for: 10jul1981

Displaying 1 result from an estimated 1 matches for "10jul1981".

2003 Nov 06
2
Number of Days
...ing to compute numbers of days between two dates as follows: > x <- c("1jan1960", "2jan1960", "31mar1960", "30jul1960") > z <- format(x, "%d%b%Y") > ex <- c("1jan1961", "15jan1960", "21mar1975", "10jul1981") > ez <- format(ex, "%d%b%Y") > ez-z Error in ez - z : non-numeric argument to binary operator As you may see, I am getting an error. Can anyone tell me how I can convert z and ez to numeric vectors, so that I can compute days between the corresponding dates in these ve...