Displaying 1 result from an estimated 1 matches for "select_v3".
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select_v2
2009 Nov 25
1
Sampling dataframe
Hi,
I have a table like that:
> datatest
var1 var2 var3
1 1 1 1
2 3 1 2
3 8 1 3
4 6 1 4
5 10 1 5
6 2 2 1
7 4 2 2
8 6 2 3
9 8 2 4
10 10 2 5
I need to create another table based on that with the rules:
take a random sample by var2==1 (2 sample rows for example):
var1 var2 var3
1 1