图例修改，请大家帮帮忙！

雪荆

我用sas的以下程序得到这样的图，但是我想把图例的plot去掉，而且图例没有完全显示出来。恳请各位高手帮帮忙！
ods rtf file='F:\methadone\articles\English\CM\结果\CEAR_all.rtf';
goptions reset=all reset=axis reset=legend cback=white colors=(black blue green red);
symbol1 color=green interpol=join line=1 width=1.5;
symbol2 color=green interpol=spline line=2 width=1.5;
symbol3 color=ROSE  interpol=join line=1 width=1.5;
symbol4 color=ROSE  interpol=spline line=2 width=1.5;
symbol5 color=blue interpol=join line=1 width=1.5;
symbol6 color=blue interpol=spline line=2 width=1.5;
/*footnote 'Figure 1 Cost-effectiveness acceptability curve of implementing CM in rural and urban clinics' f='Times New Roman' h=1.5; */
axis1 label=(f='Times New Roman' j=center 'Willingness to pay (RMB)' h=1);
axis2 label=(f='Times New Roman' R=90 a=-90 j=right 'Probability' h=1) ;
legend across=2 down=3 position=(bottom center outside) mode=protect label=(f='Times New Roman' h=0.55) value=(f='Times New Roman' h=0.55);
proc gplot data=CEAC_all;
plot mean1_urban*threshold mean1_rural*threshold mean2_urban*threshold mean2_rural*threshold mean3_urban*threshold mean3_rural*threshold
/noframe overlay haxis=axis1 vaxis=axis2 legend=legend;
run;
ods rtf close;

图1

caroly

你没有设置LEGEND LABEL的取值，仅仅设置了format and height ,所以图例显示不完整