Hello all!
I have a problem to group my data (years) in 10 years classes. For example
for year

year     decade
1598  1590-1600
1599  1590-1600
1600  1590-1600
1601  1600-1610
---

my is like this>

 [1] 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611
1612
 [16] 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626
1627
 [31] 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641
1642
 [46] 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656
1657
 [61] 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671
1672
 [76] 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686
1687
 [91] 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701
1702
[106] 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716
1717
[121] 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731
1732
[136] 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746
1747
[151] 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761
1762
[166] 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776
1777
[181] 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791
1792
[196] 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806
1807
[211] 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821
1822
[226] 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836
1837
[241] 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851
1852
[256] 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866
1867
[271] 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881
1882
[286] 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896
1897
[301] 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911
1912
[316] 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926
1927
[331] 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941
1942
[346] 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956
1957
[361] 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971
1972
[376] 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986
1987
[391] 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997

Thank you!
-- 
---
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]]

