Working with Time Series Data
Using SAS Data Set Options
You can use the OBS= and FIRSTOBS= data set options to subset the input data set.
For example, the following statements print observations 20 through 25 of the data set FULL:
proc print data=full(firstobs=20 obs=25);
run;
Figure 3: Partial Listing of Data Set FULL
| Obs | date | state | i | x | y | close |
|---|---|---|---|---|---|---|
| 20 | 21OCT1993 | NC | 20 | 0.44803 | 0.35302 | 0.44803 |
| 21 | 22OCT1993 | NC | 21 | 0.03186 | 1.67414 | 0.03186 |
| 22 | 23OCT1993 | NC | 22 | -0.25232 | -1.61289 | -0.25232 |
| 23 | 24OCT1993 | NC | 23 | 0.42524 | 0.73112 | 0.42524 |
| 24 | 25OCT1993 | NC | 24 | 0.05494 | -0.88664 | 0.05494 |
| 25 | 26OCT1993 | NC | 25 | -0.29096 | -1.17275 | -0.29096 |
You can use KEEP= and DROP= data set options to exclude variables from the input data set. For information about SAS data set options, see SAS DATA Step Statements: Reference.
Last updated: June 19, 2025