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Rのdplyr::filterを使って 行名 rownameでフィルターをかける場合

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data_frameというデータフレームがあり、a1, b1という行名のみのデータフレームを表示したい場合、以下のようにする。

data_frame %>% dplyr::filter(row.names(.) %in% c("a1", "b1"))

row.names(.)の ”.” を忘れないように。

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