* Show Two Categories on same histogram. * Define dummy data file for illustration purposes. * rlevesque@videotron.ca. NEW file. SET SEED=975316421. INPUT PROGRAM. LOOP id=1 TO 50. COMPUTE income=RV.NORMAL(35,5). COMPUTE group=UNIFORM(1)>.5. END CASE. END LOOP. END FILE. END INPUT PROGRAM. EXECUTE. GRAPH /HISTOGRAM=income . * look at the histogram and note the smallest value and the range of each bin. * in this case the smallest mid point of a bin is 18,000 and the range is 2000. * (Of course the above 2 lines could be automated if necessary). * Recode the income values as folows. LOOP cnt=18 TO 46 BY 2. IF RANGE(income,cnt-1,cnt+0.99999) income1=cnt. END LOOP. EXECUTE. GRAPH /BAR(GROUPED)=COUNT BY income1 BY group /MISSING=REPORT.