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R language changes dataframe data from long to wide: spread function of tidyr package and pivot of CDATA package_ to_ Rowrecs function, data Table package dcast function

2022-04-22 12:48:00 【Data+Science+Insight】

R Language will dataframe Data from long table (long) Change to wide table （wide） actual combat ：tidyr Bag spread function 、cdata Bag pivot_to_rowrecs function 、data.table package dcast.data function

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