Replicas browser and optimizer
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Find coordinates by iso-code that are far away from the average center of all coordinates with the same iso-code and sort them by descending distance from that center. This is a heuristic to find wrong coordinates and / or wrong iso-codes. If you get to the first point already inside the iso-code area, it is unlikely to find more errors further down below. Works best for iso areas that are close to cycle shape (Switzerland, as opposed to the USA), and it does not work for areas located on both sides of the 180° meridian (e.g. FJ, NZ). Fix & rerun. You can change iso codes through variables iso1 and iso2 (you have to copy the script). Original script by Thomas Ledl.
use dewiki_p; set @iso1:='HR'; #set @iso2:='' or code set @iso2:='12'; select sqrt((gt_lat - cen_gt_lat)*(gt_lat - cen_gt_lat) + (gt_lon - cen_gt_lon)*(gt_lon - cen_gt_lon)) as distanzungefaehr, gt_lat, gt_lon, gt_page_id, gt_name, (select page_title from page where page_id = gt_page_id) as title, gt_country,gt_region from geo_tags, (select avg(gt_lat) cen_gt_lat,avg(gt_lon) cen_gt_lon,count(*) from geo_tags where case when @iso2='' then gt_country=@iso1 else gt_country=@iso1 and gt_region=@iso2 end) as zentrumdavon where case when @iso2='' then gt_country=@iso1 else gt_country=@iso1 and gt_region=@iso2 end order by 1 desc limit 100; #and gt_region is null
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