search for: tilia

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2008 Feb 08
1
Can I index a dataframe with a reference from/to a second dataframe?
...;Picea mariana", "Pinus resinosa", "Pinus strobus", "Populus tremuloides", "Prunus serotina", "Prunus virginiana", "Quercus rubra", "Ribes ", "Sorbus americana", "Thuja occidentalis", "Tilia americana", "Tsuga canadensis", "Ulmus americana", "Viburnum acerifolium", "Viburnum lantanoides"), class = "factor"), Cname = structure(c(7L, 27L, 30L, 2L, 3L, 6L, 31L, 33L, 1L, 8L, 10L, 15L, 11L, 21L, 4L, 14L, 20L, 17L, 18L, 23...