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| program define binsreg_irecode
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| version 13
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| syntax varlist(max=1 numeric) [if] [in], knotmat(name) BINid(varname numeric)
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| [usegtools nbins(string) pos(string) knotliston(string)]
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| marksample touse
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| if ("`usegtools'"==""|"`pos'"!="QS") {
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| confirm variable `binid'
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| confirm matrix `knotmat'
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| local n=rowsof(`knotmat')
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| if (`n'==2) qui replace `binid'=1 if `touse'
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| else if (`n'==3) qui replace `binid'=1+irecode(`varlist', `knotmat'[2,1]) if `touse'
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| else {
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| local J = `n' - 2
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| local knots = `knotmat'[2,1]
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| local assignedbins = 1
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| local knotstsize : strlen local knots
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| local knotsnextsize = 0
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| forvalues j = 2/`J' {
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| local knotsnext = `knotmat'[`j'+1,1]
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| local knotstsize = `knotstsize' + `knotsnextsize'
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| local knotsnextsize : strlen local knotsnext
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| if (`knotstsize' + `knotsnextsize' < `c(macrolen)') & (`j' - `assignedbins' < 248){
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| local knots "`knots',`knotsnext'"
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| if `j' == `J' {
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| qui replace `binid' = `assignedbins' + irecode(`varlist',`knots') if `touse' & `binid'==.
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| }
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| }
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| else {
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| qui replace `binid' = `assignedbins' + irecode(`varlist',`knots') if `binid'==. & `touse'
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| if `j'<`J' {
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| qui replace `binid' = . if `varlist' > `knotmat'[`j'+1,1] & `touse'
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| local knots = `knotmat'[`j'+1,1]
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| local assignedbins = `j'
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| local knotstsize = 0
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| }
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| else {
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| qui replace `binid' = `n'-1 if `varlist' > `knotmat'[`j'+1,1] & `touse'
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| }
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| }
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| }
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| }
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| }
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| else {
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| capture confirm variable `binid'
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| if (!_rc) drop `binid'
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| if (`nbins'==1) qui replace `binid'=1 if `touse'
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| else {
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| tempvar cat
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| if ("`knotliston'"=="T") fasterxtile `binid'=`varlist', nq(`nbins')
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| else fasterxtile `binid'=`varlist' if `touse', nq(`nbins')
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| }
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| }
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| end
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