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A comment on Why I use R. Parent comment

Re:Why I use R by mpjdem on Monday January 06, 2020 @08:33AM (#21968961)
If you need i,j indices to solve your problem you should probably not be using a data.frame but a matrix type.
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Re:Why I use R by anthony_doan on Monday January 06, 2020 @10:12AM (#21969681)
If he/she chose to use dataframe then the data is probably multiple type. Matrix data structure can only have one type.
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