I have a table that shows an ID and two numeric variables, as in the example below:
ID | VAR1 | VAR2 |
ID1 | 20 | 10 |
ID2 | 21 | 11 |
ID3 | 22 | 12 |
I have to add in this table an other column (e.g. TOT) that calculate the difference between var1 to the first row and var2 to the second and so on, as in the example below:
ID | VAR1 | VAR2 | TOT |
ID1 | 20 | 10 | 9 |
ID2 | 21 | 11 | 9 |
ID3 | 22 | 12 | 22 |
Could anyone help me?
Thanks for your assistance.
data want; merge have have(keep=var2 rename=(var2=next_var2) firstobs=2) end=done; if not done then tot=var1-next_var2; drop next_var2; run;
data want; merge have have(keep=var2 rename=(var2=next_var2) firstobs=2) end=done; if not done then tot=var1-next_var2; drop next_var2; run;
Join us for SAS Innovate April 16-19 at the Aria in Las Vegas. Bring the team and save big with our group pricing for a limited time only.
Pre-conference courses and tutorials are filling up fast and are always a sellout. Register today to reserve your seat.
Learn the difference between classical and Bayesian statistical approaches and see a few PROC examples to perform Bayesian analysis in this video.
Find more tutorials on the SAS Users YouTube channel.