如何从R中的数据框列中提取逗号后的信息?
polyname
south dakota,minnehaha
colorado,larimer
nebraska,adams
nebraska,adams
nebraska,adams我想要一个像这样的返回栏
counties
minnehaha
larimer
adams
adams
adams发布于 2015-05-30 00:30:49
试一试
df1$counties <- sub('^[^,]+,', '', df1$polyname)https://stackoverflow.com/questions/30534608
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