proc sgpanel legend for group variable location=outside

[Cruise]

I have two major and few other minor problems in this plot. Major problems first. Each panel supposed to present line chart by 5 level of categorical variable, 'BF categories'. Instead these tangled lines appeared which doesn't make sense. I'd like to have each lines in each panel in different colors associated with a Legend outside the panel with information as below.

Any suggestions please? Attached is the summary data from a sampled data.

Legend:

 red: 1-3 months

 blue: 4-9 months

 green: 10-12 months

 brown: 13-24 months

et.c

PROC IMPORT DATAFILE= "...\plotdata.txt" 
			OUT= B.plotdata
            DBMS=DLM REPLACE;
            GETNAMES=YES;
RUN;
proc sgpanel data=plotdata; 
panelby race agegroup/ novarname onepanel LAYOUT=LATTICE columns=5 ROWHEADERPOS=right; 
series y=pr_obs x=year/group=bf;
keylegend/  title="BF categories" position=bottom location=outside;
format race race. agegroup agegroup. year 4.0 bf bf.;
colaxis label='COHORT YEARS' fitpolicy=thin grid;
rowaxis label='PREVALENCE OF DISEASE' grid;
title 'PREVALENCE OF 'X' BY COHORT YEAR, AGE AND RACE'; 
run;

[Reeza]

What variable do you have that specifies those three groups you want. Don’t see anything relevant in the data. 

[Cruise]

Reeza, the variable 'bf' which has 6 levels. Legend with 3 levels in my post wasn't meant to be exact.

[PGStats]

I fixed a few minor problems in this version

PROC IMPORT DATAFILE= "&sasforum\datasets\plotdata.txt" 
			OUT= plotdata
            DBMS=DLM REPLACE;
            GETNAMES=YES;
RUN;

proc sort data=plotdata; by race agegroup bf year; run;

ods graphics / height=1200 width=1200;
proc sgpanel data=plotdata; 
panelby race agegroup/ novarname onepanel LAYOUT=LATTICE ROWHEADERPOS=right; 
series y=pr_obs x=year / group=bf lineattrs=(pattern=solid);
keylegend/  title="BF categories" position=bottom;
*format race race. agegroup agegroup. year 4.0 bf bf.;
colaxis label='COHORT YEARS' fitpolicy=thin valuesformat=best4.0;
rowaxis label='PREVALENCE OF DISEASE';
title "PREVALENCE OF 'X' BY COHORT YEAR, AGE AND RACE"; 
run;

[Cruise]

Great!!! Thanks Pgstat and Reeza. Below is the code with your inputs reflected. One last thing, because chart is getting large in size, I'd like to have ROWHEADERPOS=both COLHEADERPOS=both options for easire eyeballing. Currently, row and col headers I guess are interfered by axis titles at left and bottom. Is there anyway to have row/col headers stick to the body of the chart? not split by axis titles?  Like in the image?

proc sort data=b.plotdata; by race agegroup bf year; run;
ods graphics / height=1200 width=4000;
proc sgpanel data=plotdata1;
panelby race agegroup/ novarname onepanel LAYOUT=LATTICE ROWHEADERPOS=both COLHEADERPOS=both;
series y=pr_obs x=year / group=bf lineattrs=(pattern=solid);
keylegend/  title="Categories" position=bottom;
*format race race. agegroup agegroup. bf bf.;
colaxis label='YEARS' fitpolicy=thin valuesformat=best4.0 values=(2002 to 2015 by 1);
rowaxis label='PREVALENCE OF DISEASE' grid;
title "TITLE";
run;

[PGStats · Accepted solution]

It would look even worse with row headers on the outside. Perhaps the PANEL layout would be better for your graph.

ods graphics / height=1400 width=1200;
proc sgpanel data=plotdata; 
panelby race agegroup/ novarname onepanel LAYOUT=Panel columns=5;