Displaying 2 results from an estimated 2 matches for "donatelli".
2013 Jan 07
6
Refer to previous row
Hi all,
I have a very basic doubt -- but still, I am a newby!
My question is about referring to the previous row: in a sample as the
following...
ID X1 X2
1 A 12
2 A 6
3 A 10
1 B 17
2 B 19
1 C 22
1 D 13
2 D 19
3 D 21
... I would like to create a dummy variable equal to 1 whenever the
value of ID of the current row is lower or equal than the value of ID
of
2013 Jan 09
4
Basic loop programming
Hi all,
newbie question: I am trying to set up a very simple loop without succeeding.
Let's say I have monthly observation of two variables for a year
- Sales_2012_01, Sales_2012_02, Sales_2012_03, .... (total sales
for jan 2012,feb 2012, etc.)
- Customers_2012_01, Customers_2012_02, .... (total number of
customers for jan 2012, etc.)
and I want to create new monthly variables in