读入.csv文件
The read.csv function can read CSV files. If your CSV file has a header line, use this:
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> tbl <- read.csv("filename")If your CSV file does not contain a header line, set the header option to FALSE:
> tbl <- read.csv("filename", header=FALSE)
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Sometimes, you really want your data interpreted as strings, not as factors. In that case,
set the as.is parameter to TRUE; this indicates that R should not interpret nonnumeric
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data as a factor:
> tbl <- read.csv("table-data.csv", as.is=TRUE)
> str(tbl)
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