Hello all! I have a big problem now. I want a data frame like this: dput(head(test,100)) structure(c(NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, 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NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA), .Dim = c(100L, 30L), .Dimnames = list( c("1592", "1593", "1594", "1595", "1596", "1597", "1598", "1599", "1600", "1601", "1602", "1603", "1604", "1605", "1606", "1607", "1608", "1609", "1610", "1611", "1612", "1613", "1614", "1615", "1616", "1617", "1618", "1619", "1620", "1621", "1622", "1623", "1624", "1625", "1626", "1627", "1628", "1629", "1630", "1631", "1632", "1633", "1634", "1635", "1636", "1637", "1638", "1639", "1640", "1641", "1642", "1643", "1644", "1645", "1646", "1647", "1648", "1649", "1650", "1651", "1652", "1653", "1654", "1655", "1656", "1657", "1658", "1659", "1660", "1661", "1662", "1663", "1664", "1665", "1666", "1667", "1668", "1669", "1670", "1671", "1672", "1673", "1674", "1675", "1676", "1677", "1678", "1679", "1680", "1681", "1682", "1683", "1684", "1685", "1686", "1687", "1688", "1689", "1690", "1691"), c("01", "02", "03", "04", "05", "06", "07", "08", "09-236", "10-63T", "11", "12", "13", "14", "15", "16", "17-234", "18", "19", "20", "23", "24", "25", "26", "27", "HAR133", "HAR105", "HAR211", "HUMH255", "HUMH276"))) Now I want to group rownames (in this case year) in 10 years classes and I want to count for each 10 years classe (decade) the number of major and minor events. I try this code to group values in classes but don't work and I don't know how to count a value for each row and sum them for each 10 years classes.
test$year<-as.numeric(row.names(test)) q<-cut(rownames(test),seq(0,ceiling(max(rownames(test)+10),by=10), labels=seq(10,ceiling(max(rownames(test)+10), by=10)))) Please help me to solve this problem! Thank very much! -- --- Catalin-Constantin ROIBU Lecturer PhD, Forestry engineer Forestry Faculty of Suceava Str. Universitatii no. 13, Suceava, 720229, Romania office phone +4 0230 52 29 78, ext. 531 mobile phone +4 0745 53 18 01 +4 0766 71 76 58 FAX: +4 0230 52 16 64 silvic.usv.ro [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.