Hi
I have a data frame with values in following format.
param case1
1 a
2 b
2 c
2 d
3 e
4 f
how to use aggregate so that it I only one row for each 'param' value.
the output for the above input should be
param case1
1 a
2 b,c,d
3 e
4 f
Thanks
M
--
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Mary Kindall
Yorktown Heights, NY
USA
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