| Creating Plots | |
| Selecting Observations |
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| In this lesson so far, you've created plots using all the
observations in a data set. You can also select observations based on a condition
by using a
WHERE statement in your PROC GPLOT step.
If you took the lesson on PROC PRINT or PROC TABULATE, you learned to use the WHERE statement to select observations based on certain conditions. |
proc print data=clinic.admit;
where actlevel in ('HIGH','LOW');
run;
proc tabulate data=clinic.stress;
var maxhr rechr resthr;
table max*(maxhr rechr resthr);
where maxhr-resthr<=70;
run;
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The WHERE statement works the same way
with PROC GPLOT. The following plot, for example, displays only observations
where the value for both Swim and AerClass exceeds
35. To select these observations, you use this WHERE statement: |
symbol1 interpol=spline value=none color=red;
symbol2 interpol=spline value=none color=blue;
proc gplot data=clinic.therapy1999;
plot swim*month aerclass*month/overlay;
where swim>35 and aerclass>35;
run;
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