program define sptobitmstarxt02 version 11.0 args lf XB Rho tempvar rYW1 D0 D1 qui gen `D0'=0 qui gen `D1'=0 qui replace `D0' =1 if $ML_y1 ==spat_llt qui replace `D1' =1 if $ML_y1 > spat_llt qui gen double `rYW1'=`Rho'*w1y_$ML_y1 qui replace `lf'=-`D0'*(`rYW1'+`XB')+`D1'*($ML_y1-(`rYW1'+`XB'))-exp($ML_y1-(`rYW1'+`XB')) end