[Gretl-users] Re: changing the numerical mapping

On Wed, Feb 1, 2023 at 9:03 AM Cottrell, Allin <cottrell(a)wfu.edu&gt; wrote: > On Wed, Feb 1, 2023 at 5:02 AM Paolo Chirico <paolo.chirico(a)uniupo.it&gt; wrote: >> Dears, >> If I have a string variable with the following mapping: >> 1 = 'middle' >> 2 = 'low' >> 3 = 'high' >> there is a command to give the series a new, more logical mapping? Like as: >> 1 = 'low' >> 2 = 'middle' >> 3 = 'high' >> I've simplified the example, but the concept is: changing the numerical >> mapping of the entire series [...] While my previous answer works for the simplified case, it may be worth giving a more general, automated solution. Here's a function that does the job: <hansl> function void recode (series *y, series x, strings S) y = 0 matrix m = {y} strings S0 = x loop i=1..nelem(S) matrix sel = instrings(S0, S[i]) m[sel] = i endloop y = m stringify(y, S) end function </hansl> The idea is that you pass (1) a target series in pointer form, (2) the original string-valued series and (3) an array holding the string values of the original series, re-ordered as per the desired numerical coding. So in relation to my previous example you'd do: <caller> open strs.csv series y recode(&y, x, defarray("low", "middle", "high")) </caller> Allin _______________________________________________ Gretl-users mailing list -- gretl-users(a)gretlml.univpm.it To unsubscribe send an email to gretl-users-leave(a)gretlml.univpm.it Website: https://gretlml.univpm.it/postorius/lists/gretl-users.gretlml.univpm.it/