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| /*------------------------------------------------------------------------------- | ||
| derivescores_destring.ado: helper script for -derivescores- convert a classification code variable to the corresponding preferred numerical equivalent | ||
| Copyright (C) 2017 Daniel Bela ([email protected]) | ||
| Knut Wenzig | ||
| This program is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation, either version 3 of the License, or | ||
| (at your option) any later version. | ||
| This program is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| -------------------------------------------------------------------------------*/ | ||
| *! derivescores_destring.ado: helper script for -derivescores- convert a classification code variable to the corresponding preferred numerical equivalent | ||
| /* | ||
| This procedure displays converts a given string classification code variable | ||
| and generates a numerical variable from it, by using the appropriate | ||
| preferred values from the classification table ('prefValue'). | ||
| */ | ||
| program define derivescores_destring , nclass | ||
| // syntax declaration and macros | ||
| syntax varname(string) , DEClaration(string) [, generate(name) replace verbose ] | ||
| // set macros | ||
| local sourcevarname Concept | ||
| local targetvarname prefValue | ||
| local stylevarname labelStyle | ||
| local renamefrom | ||
| local renameto | ||
| local re_renamefrom | ||
| local re_renameto | ||
| tempvar mergesource | ||
| local tableoffset 3 // offset for indenting the whole table | ||
| local tablespace 2 // space between the two table columns | ||
| local col1header `"key"' // column header for column 1 | ||
| local col2header `"content"' // column header for column 2 | ||
| local maxnamelength=udstrlen(`"`col1header'"') // initialization value for width of column 1 | ||
| // abort if -derivescores setup- has not been run previously | ||
| if (`"${DERIVESCORES_initialized}"'!="1") { | ||
| noisily : display as error in smcl `"It does not seem that {it:derivescores} has been initialized; maybe you should run {stata derivescores setup} first?"' | ||
| exit 459 | ||
| } | ||
| // determine initialization number for given declaration(s) | ||
| local decnum | ||
| forvalues num=1/${DERIVESCORES_dec_count} { | ||
| if (`"${DERIVESCORES_dec`num'_shortname}"'==`"`declaration'"') { | ||
| local decnum `num' | ||
| continue , break | ||
| } | ||
| } | ||
| if (missing(`"`decnum'"')) { | ||
| noisily : display as error in smcl `"{it:`declaration'} is not a table declaration that has been initialized"' | ||
| exit 198 | ||
| } | ||
| // check mutually exclusive options `replace' and `generate()' | ||
| if (!missing(`"`replace'"') & !missing(`"`generate'"')) { | ||
| noisily : display as error in smcl `"options {it:generate()} and {it:`replace'} are mutually exclusive | ||
| exit 198 | ||
| } | ||
| // replace-scenario: temporarily generate variable as new | ||
| if `"`replace'"'=="replace" { | ||
| tempvar generate | ||
| } | ||
| // assert that `generate' is a new variable | ||
| confirm new variable `generate' , exact | ||
| // check if "Concept" and "prefValue" and so on are unused variable names; add to rename lists, if not | ||
| foreach testvar in `sourcevarname' `targetvarname' `stylevarname' { | ||
| capture : confirm variable `testvar' , exact | ||
| if (_rc==0) { | ||
| tempvar `testvar' | ||
| local renamefrom : list renamefrom | testvar | ||
| local re_renamefrom : list re_renamefrom | `testvar' | ||
| local renameto : list renameto | `testvar' | ||
| local re_renameto : list re_renameto | testvar | ||
| } | ||
| } | ||
| // bring sourcevariable name to rename list | ||
| local renamefrom : list renamefrom | varlist | ||
| local re_renamefrom : list re_renamefrom | sourcevarname | ||
| local renameto : list renameto | sourcevarname | ||
| local re_renameto : list re_renameto | varlist | ||
| // rename variables to match correspondence declaration | ||
| rename (`renamefrom') (`renameto') | ||
| // everything between here and the hoefully successful merge shall not abort; | ||
| // if it does regardless, we have to cleanup the oddly renamed variables in the dataset before termination | ||
| capture { | ||
| // generate helper variable for label style (to match entries in declaration table uniquely) | ||
| generate labelStyle=`"${DERIVESCORES_dec`decnum'_defaultStyle}"' | ||
| // merge with declaration | ||
| noisily : merge m:1 `sourcevarname' `stylevarname' using `"${DERIVESCORES_dec`decnum'_file}"', keepusing(`"`targetvarname'"') keep(match master) generate(`mergesource') noreport nolabel nonotes | ||
| // add successfully merged variable to re-rename lists | ||
| local re_renamefrom : list re_renamefrom | targetvarname | ||
| local re_renameto : list re_renameto | generate | ||
| // save values for reporting results lateron | ||
| if (`"`report'"'!="noreport") { | ||
| count if `mergesource'==3 | ||
| local dupmatches `r(N)' | ||
| duplicates report `sourcevarname' if (`mergesource'==3) | ||
| local uniqmatches `r(unique_value)' | ||
| count if `mergesource'==1 | ||
| local dupmismatches `r(N)' | ||
| duplicates report `sourcevarname' if (`mergesource'==1) | ||
| local uniqmismatches `r(unique_value)' | ||
| } | ||
| // sort new variable after source variable | ||
| order `targetvarname' , after(`sourcevarname') | ||
| } | ||
| // in case something went wrong: save return code, and abort after re-renaming variables | ||
| local returncode=_rc | ||
| // drop labelStyle | ||
| drop `stylevarname' | ||
| // re-rename variables | ||
| rename (`re_renamefrom') (`re_renameto') | ||
| // label target variable | ||
| label variable `generate' `"`: variable label `varlist''"' | ||
| // replace-scenario: interchange (temporary) new and already existing variable names | ||
| if `"`replace'"'=="replace" { | ||
| rename (`varlist' `generate') (`generate' `varlist') | ||
| } | ||
| // abort on errors | ||
| if (`returncode'!=0) { | ||
| exit `returncode' | ||
| } | ||
| // report results | ||
| if (`"`report'"'!="noreport") { | ||
| local maxnamelength 30 | ||
| noisily : display as result in smcl _newline `"{text}results from destringing values according to declaration {result}`declaration'{text}:"' _newline `"{p2colset `tableoffset' `maxnamelength' `=`maxnamelength'+`tablespace'' `=c(linesize)-`maxnamelength'-`tablespace'-`tableoffset'-15'}"' _newline `"{p2line}"' _newline `"{text}{p2col:destringed observations:}"' %8.0g `dupmatches' `"{p_end}"' _newline `"{text}{p2col:unchanged observations:}"' %8.0g `dupmismatches' `"{p_end}"' _newline(2) `"{text}{p2col:unique destring matches:}"' %8.0g `uniqmatches' `"{p_end}"' _newline `"{text}{p2col:unique unchanged values:}"' %8.0g `uniqmismatches' `"{p_end}"' _newline `"{p2line}"' _newline `"{p2colreset}"' | ||
| } | ||
| // quit | ||
| exit 0 | ||
| end | ||
| // EOF |
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