information on how to check gemeenteblad source data for spelling mistakes

info.md

@@ -47,6 +47,36 @@ done
 ```
 compare against amount of lines in `working-data/02/` with `wc -l` for each file and then we see which sets dont return all data then more investigation can happen and the query can be adjusted.
 
+## checking the data from gemeenteblad for mistakes
+some of the street names are misspelled. to check for that i was using the following process.
+in the `source-data/by-district` directory i run a quick sed command for each neighbouhood to format data for pasting into a tool i.e. `cat 10-ijsselmonde | sed 's/, /, Rotterdam\n/g'`
+this returns a list like this (abbreviated for readability):
+```
+Aesopusviaduct, Rotterdam
+Anthony Tijkenstraat, Rotterdam
+Bierens de Haanweg, Rotterdam
+Bollandstraat, Rotterdam
+Bolnesserkade, Rotterdam
+Burgemeester Molenaarstraat, Rotterdam
+Cannenburchstraat, Rotterdam
+Zuidkreek.
+```
+
+then i go into https://www.mapcustomizer.com/ and use the bulk import option to mark all these streets, adding `, Rotterdam` to the last street name so it looks like this
+```
+Aesopusviaduct, Rotterdam
+Anthony Tijkenstraat, Rotterdam
+Bierens de Haanweg, Rotterdam
+Bollandstraat, Rotterdam
+Bolnesserkade, Rotterdam
+Burgemeester Molenaarstraat, Rotterdam
+Cannenburghstraat, Rotterdam
+Zuidkreek, Rotterdam
+```
+
+if you try these streets 2 of them will fail (bolnesserkade and cannenburghstraat). then you manually look these streets up in a search engine. in our case - Bolnesserkade is marked as being in Ridderkerk and Cannenburghstraat is misspelled. The first one i just ignore (can be added manually later, it's an edge case) the second one i just correct in the source file and make a comment about it.
+
+
 ## AI-generated guide