[英]split a column into several column with variable names in R
How can I separate the one column into several columns. 如何将一列分为几列。 Note that the I have the information on the width of each column.
请注意,我具有每列宽度的信息。
eg 例如
12729404
28290282
36383025
I would like to separate it and give it a variable names into: 我想将其分开并给它一个变量名:
plot_no sp_code dbh
127 29 40.4
282 90 28.2
363 83 10.2
Note that I have ~5000 rows data with one column. 请注意,我有〜5000行数据和一列。
We can try with sub
我们可以尝试
sub
read.table(text=sub("(\\d{3})(\\d{2})(\\d{2})(\\d{1})", "\\1,\\2,\\3.\\4", df1$v1),
sep=",", header=FALSE, col.names = c('plot_no', 'sp_code', 'dbh'))
# plot_no sp_code dbh
#1 127 29 40.4
#2 282 90 28.2
#3 363 83 2.5
df1 <- structure(list(v1 = c(12729404L, 28290282L, 36383025L)),
.Names = "v1", class = "data.frame", row.names = c(NA, -3L))
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