Dear R-helpers,
I have two rows in my dataframe:
ID VALUE
1A 10
1B 15
and I would like to combine these two rows into a single (new) row in my
dataframe:
ID VALUE
1 25
...simply by specifying a new value for ID and summing the two VALUES.
I have been trying to do this with with rbind, but it's not working.
I'd appreciate any pointers.
Thanks, Mark Na
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