Extracts one or more tree-ring series (columns) from a data frame of class "rwl".
Optionally adds the rownames (assumed to be years) as a column.
Arguments
- x
A
data.frameof class"rwl", where each column is a tree-ring width series and rownames represent years.- series
A character string or vector specifying the name(s) of the series (columns) to extract.
- rownames_to_years
Logical. If
TRUE, the rownames ofx(years) are added as a column namedyears.- trim
Logical. If
TRUE, leading and trailing all-NA rows are removed usingtrs_trim().
Value
A data.frame with the selected series. If rownames_to_years = TRUE, the result will have an additional year column.
If trim = TRUE, leading and trailing all-NA rows are removed. If a single series is selected, returns a single-column data frame.
Examples
rwl <- trs_pseudo_rwl(n_series = 5, series_length = 60, end_date = 2000)
# Select single series
trs_select(rwl, series = "trs_1")
#> trs_1
#> 1941 88
#> 1942 91
#> 1943 91
#> 1944 91
#> 1945 98
#> 1946 103
#> 1947 106
#> 1948 97
#> 1949 101
#> 1950 99
#> 1951 96
#> 1952 93
#> 1953 90
#> 1954 96
#> 1955 102
#> 1956 94
#> 1957 98
#> 1958 96
#> 1959 100
#> 1960 106
#> 1961 116
#> 1962 135
#> 1963 119
#> 1964 108
#> 1965 111
#> 1966 111
#> 1967 117
#> 1968 113
#> 1969 114
#> 1970 104
#> 1971 106
#> 1972 90
#> 1973 89
#> 1974 72
#> 1975 79
#> 1976 88
#> 1977 94
#> 1978 91
#> 1979 98
#> 1980 103
#> 1981 96
#> 1982 102
#> 1983 105
#> 1984 94
#> 1985 110
#> 1986 95
#> 1987 92
#> 1988 90
#> 1989 97
#> 1990 91
#> 1991 103
#> 1992 110
#> 1993 94
#> 1994 98
#> 1995 89
#> 1996 92
#> 1997 92
#> 1998 102
#> 1999 108
#> 2000 100
trs_select(rwl, series = "trs_2", rownames_to_years = TRUE)
#> trs_2 year
#> 1941 75 1941
#> 1942 84 1942
#> 1943 85 1943
#> 1944 88 1944
#> 1945 97 1945
#> 1946 98 1946
#> 1947 100 1947
#> 1948 88 1948
#> 1949 85 1949
#> 1950 98 1950
#> 1951 99 1951
#> 1952 104 1952
#> 1953 104 1953
#> 1954 99 1954
#> 1955 104 1955
#> 1956 98 1956
#> 1957 102 1957
#> 1958 99 1958
#> 1959 96 1959
#> 1960 103 1960
#> 1961 110 1961
#> 1962 121 1962
#> 1963 116 1963
#> 1964 105 1964
#> 1965 100 1965
#> 1966 106 1966
#> 1967 101 1967
#> 1968 115 1968
#> 1969 122 1969
#> 1970 122 1970
#> 1971 112 1971
#> 1972 98 1972
#> 1973 92 1973
#> 1974 73 1974
#> 1975 88 1975
#> 1976 84 1976
#> 1977 89 1977
#> 1978 96 1978
#> 1979 100 1979
#> 1980 101 1980
#> 1981 96 1981
#> 1982 98 1982
#> 1983 98 1983
#> 1984 87 1984
#> 1985 94 1985
#> 1986 89 1986
#> 1987 91 1987
#> 1988 90 1988
#> 1989 97 1989
#> 1990 90 1990
#> 1991 97 1991
#> 1992 103 1992
#> 1993 91 1993
#> 1994 104 1994
#> 1995 95 1995
#> 1996 102 1996
#> 1997 97 1997
#> 1998 101 1998
#> 1999 104 1999
#> 2000 101 2000
# Select multiple series
trs_select(rwl, series = c("trs_1", "trs_2"))
#> trs_1 trs_2
#> 1941 88 75
#> 1942 91 84
#> 1943 91 85
#> 1944 91 88
#> 1945 98 97
#> 1946 103 98
#> 1947 106 100
#> 1948 97 88
#> 1949 101 85
#> 1950 99 98
#> 1951 96 99
#> 1952 93 104
#> 1953 90 104
#> 1954 96 99
#> 1955 102 104
#> 1956 94 98
#> 1957 98 102
#> 1958 96 99
#> 1959 100 96
#> 1960 106 103
#> 1961 116 110
#> 1962 135 121
#> 1963 119 116
#> 1964 108 105
#> 1965 111 100
#> 1966 111 106
#> 1967 117 101
#> 1968 113 115
#> 1969 114 122
#> 1970 104 122
#> 1971 106 112
#> 1972 90 98
#> 1973 89 92
#> 1974 72 73
#> 1975 79 88
#> 1976 88 84
#> 1977 94 89
#> 1978 91 96
#> 1979 98 100
#> 1980 103 101
#> 1981 96 96
#> 1982 102 98
#> 1983 105 98
#> 1984 94 87
#> 1985 110 94
#> 1986 95 89
#> 1987 92 91
#> 1988 90 90
#> 1989 97 97
#> 1990 91 90
#> 1991 103 97
#> 1992 110 103
#> 1993 94 91
#> 1994 98 104
#> 1995 89 95
#> 1996 92 102
#> 1997 92 97
#> 1998 102 101
#> 1999 108 104
#> 2000 100 101
trs_select(rwl, series = c("trs_1", "trs_3", "trs_5"), rownames_to_years = TRUE)
#> trs_1 trs_3 trs_5 year
#> 1941 88 91 87 1941
#> 1942 91 101 93 1942
#> 1943 91 101 89 1943
#> 1944 91 99 90 1944
#> 1945 98 107 92 1945
#> 1946 103 102 99 1946
#> 1947 106 105 100 1947
#> 1948 97 94 95 1948
#> 1949 101 106 94 1949
#> 1950 99 98 87 1950
#> 1951 96 95 84 1951
#> 1952 93 90 96 1952
#> 1953 90 90 99 1953
#> 1954 96 101 99 1954
#> 1955 102 108 105 1955
#> 1956 94 89 92 1956
#> 1957 98 98 101 1957
#> 1958 96 91 100 1958
#> 1959 100 95 99 1959
#> 1960 106 100 103 1960
#> 1961 116 108 112 1961
#> 1962 135 121 122 1962
#> 1963 119 106 110 1963
#> 1964 108 95 102 1964
#> 1965 111 103 104 1965
#> 1966 111 112 113 1966
#> 1967 117 107 109 1967
#> 1968 113 118 119 1968
#> 1969 114 117 117 1969
#> 1970 104 109 110 1970
#> 1971 106 105 104 1971
#> 1972 90 90 95 1972
#> 1973 89 88 92 1973
#> 1974 72 77 76 1974
#> 1975 79 92 89 1975
#> 1976 88 85 89 1976
#> 1977 94 88 88 1977
#> 1978 91 96 87 1978
#> 1979 98 104 96 1979
#> 1980 103 104 96 1980
#> 1981 96 98 92 1981
#> 1982 102 94 88 1982
#> 1983 105 100 96 1983
#> 1984 94 92 89 1984
#> 1985 110 92 95 1985
#> 1986 95 85 86 1986
#> 1987 92 90 94 1987
#> 1988 90 83 91 1988
#> 1989 97 95 103 1989
#> 1990 91 86 94 1990
#> 1991 103 100 105 1991
#> 1992 110 99 103 1992
#> 1993 94 97 97 1993
#> 1994 98 101 115 1994
#> 1995 89 108 101 1995
#> 1996 92 119 98 1996
#> 1997 92 120 100 1997
#> 1998 102 118 109 1998
#> 1999 108 117 113 1999
#> 2000 100 107 107 2000