Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
st: Two identical observations except one variable = sum up this variable and drop one observation
From
miriam geringer <[email protected]>
To
[email protected]
Subject
st: Two identical observations except one variable = sum up this variable and drop one observation
Date
Sun, 19 Jan 2014 15:51:17 +0100
Hey guys,
in my dataset, there are some entries (duplicate entries), which are
identical (all variables have identical values), EXCEPT one variable.
There is one variable, which has different values. All other variables
have exactly the same variables.
Now, I want to add/sum up these two different values and keep all
other (identical) variables the same. After adding up the different
values, I want to keep only one observation with the summed up value.
Example:
This is how it looks:
PERMNO dofd (DAILY_ID) Price Shares offered
123456 1 5
6
123456 1 5
8
This is how it should be:
PERMNO dofd(DAILY_ID) Price Shares offered
123456 1 5
14
Can anyone help?
Thanks!
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/