A couple more tips which may be helpful, depending on which API endpoint(s) you're using:
If you're using the REST API's page HTML endpoint (/api/rest_v1/page/html/<title>), category links are marked up with rel="mw:PageProp/Category", and you can use this fact to find all linked categories with querySelectorAll. https://www.mediawiki.org/wiki/Specs/HTML/1.5.0#Category_links If you want to query all categories for a page, but omit hidden categories (those not shown on a typical article view, and which may have less taxonomic value to the average reader), you can use the clshow parameter: https://en.wikipedia.org/w/api.php?action=query&prop=categories&titles=Marfa,_Texas&cllimit=500&clshow=!hidden mdh On Mon, Oct 30, 2017 at 11:49 AM, Michael Holloway <mhollo...@wikimedia.org> wrote: > (+mediawiki-api) > > Hi Chris, > > I think many of us may be having trouble answering this because it's not > quite clear what you're trying to do. Can you be more concrete about what > categories (or what category scheme) you have in mind? > > Wikipedia doesn't have a single, overarching hierarchy of categories. A > page may be associated with any number of categories (including zero). > Some of these categories may be subcategories of other categories. Editors > may freely create and remove categories, and add and remove page > associations with these categories. > > The REST API currently doesn't expose any category information, but you > can obtain category information through follow up requests to the Action > API (https://en.wikipedia.org/w/api.php). For example: > > To get all categories associated with the page "Marfa, Texas" on English > Wikipedia: > > https://en.wikipedia.org/w/api.php?action=query&prop= > categories&titles=Marfa,_Texas&cllimit=500 > > To get all pages associated with the category "Category:Cities in Presidio > County, Texas": > > https://en.wikipedia.org/w/api.php?action=query&list= > categorymembers&cmtitle=Category:Cities_in_Presidio_County,_Texas > > Best, > Michael > > > > On Wed, Oct 25, 2017 at 5:13 PM, Christopher Smyth <ch...@inflighto.com> > wrote: > >> Hello, >> >> We’re a small app development company that has integrated Wikipedia >> content into a geo-locating iOS app. The app is working well and the Wiki >> content is displaying correctly. However, we’d like to categorise the >> Wikipedia content into three categories rather than just one. >> >> Is there a way to filter and categorise Wikipedia content that is >> accessed through the REST API? We only use content that is geo-coded (ie >> has latitude and longitude) information associated with each article. >> >> How should we go about configuring our API integration so that we can >> split Wikipedia content according to its top-level categories? Is there a >> way to do this? >> >> >> >> Many thanks for your assistance with this request. >> >> >> >> Regards, >> >> Chris Smyth >> >> >> >> >> >> Christopher Smyth >> >> Director >> >> Inflighto >> >> ch...@inflighto.com >> >> +61 (0)417 298 598 <+61%20417%20298%20598> >> >> >> >> [image: Inflighto_Source_file_tm_Original Horizontal - EMAIL SIGNATURE >> SMALL] <https://www.inflighto.com/> >> >> >> >> >> >> _______________________________________________ >> Services mailing list >> servi...@lists.wikimedia.org >> https://lists.wikimedia.org/mailman/listinfo/services >> >> >
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