[R] Data frame organization

Arnaud Mosnier @@mo@n|er @end|ng |rom gm@||@com
Mon Aug 26 16:51:01 CEST 2019

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Hi,

I have a really simple question.
I need to convert a data.frame with the following format

A   10
B   5
C   9
A   5
B   15
C   20

in this format

A   10   5
B   5    15
C   9    20

Thanks !!!

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