[MapServer-users] OGCAPI
Rahkonen Jukka
jukka.rahkonen at maanmittauslaitos.fi
Wed Apr 9 02:03:58 PDT 2025
The URL to use for the connection is the URL of the landing page
https://kulturdb.de/cgi-bin/mapserv/kdb_ogcapi/ogcapi/
That link opens as http on a browser but QGIS knows how to read the document as JSON.
-Jukka Rahkonen-
________________________________________
Lähettäjä: MapServer-users käyttäjän Schroeter via MapServer-users puolesta
Lähetetty: Keskiviikko 9. huhtikuuta 2025 11.50
Vastaanottaja: mapserver-users at lists.osgeo.org
Aihe: Re: [MapServer-users] OGCAPI
Hello Jörg,
thanks for the answer, strangely enough Qgis (version 3.4) is still
stubbornly trying to send me a WFS request. I have now also cleared the
cache and explicitly set OGC-Api. The wrong request is always set in the
diagnostic tools. Which url do you enter as the source in Qgis? Have you
ever created a service with > 40,000 objects?
Sven
Am 09.04.2025 um 09:28 schrieb Jörg Thomsen (WhereGroup) via
MapServer-users:
> Hello Sven,
>
> somehow qgis tried to use a wfs-request. I had to configure your
> service explizit as OGC-Api (not "Maximum") and delete the cache in
> QGIS. Now I can use both collections.
>
> The kdb_alle works not for all items, I have tried up to 10.000 (in
> QGIS with checkbox 'only load items i curent mapxtent'.
>
> https://kulturdb.de/cgi-bin/mapserv/kdb_ogcapi/ogcapi/collections/kdb_alle/items?f=json&limit=10000
>
>
> Don't know what ist happening, perhaps the MapServer log can tell you
> more.
>
> Jörg
>
> Am 08.04.25 um 17:56 schrieb Schroeter via MapServer-users:
>> Hi all,
>>
>> I am currently testing the ogcapi function in the current Mapserver
>> 8.4 and already have an example online:
>> https://kulturdb.de/cgi-bin/mapserv/kdb_ogcapi/ogcapi/collections?f=html
>> In the first collection, all objects (approx. 48,000 point objects
>> from a Postgis DB) are queried. Unfortunately extremely slow.
>> If I query all objects via a WMS, they come very quickly, it should
>> not be due to the DB or the connection, everything is cleanly indexed
>> etc.:
>> https://kulturdb.de/cgi-bin/mapserv?map=kdb&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&BBOX=49.49%2C6.0739%2C50.4%2C7.296&CRS=EPSG%3A4326&WIDTH=762&HEIGHT=588&LAYERS=kdb_alle&STYLES=&FORMAT=image%2Fpng
>>
>>
>> With the second collection with only 333 objects, it works quite well:
>> https://kulturdb.de/cgi-bin/mapserv/kdb_ogcapi/ogcapi/collections/kdb_brunnen/items?f=html
>>
>>
>> Here is the map file for it
>>
>> MAP
>> NAME "kdb_trier"
>> STATUS ON
>> SIZE 400 400
>> EXTENT 6.074 49.492 7.296 50.435
>> UNITS METERS
>>
>> PROJECTION
>> "init=epsg:4326"
>> END
>>
>> WEB
>> METADATA
>> # OGC API Features Konfiguration
>> "ows_enable_request" "*"
>> "ows_getfeatureinfo_formatlist"
>> "text/plain,text/html,application/json,application/vnd.ogc.gml,gml"
>> "oga_onlineresource"
>> "https://kulturdb.de/cgi-bin/mapserv/kdb_ogcapi/ogcapi"
>> "oga_title" "KDB Trier"
>> "oga_abstract" "Objekte der
>> Kulturdatenbank der Region Trier"
>> "oga_srs" "EPSG:25832 EPSG:4326
>> EPSG:3857"
>> "oga_html_template_directory"
>> "/var/www/html/ogcapi/templates/html-bootstrap4/"
>> "oga_extent" "6.074 49.492 7.296
>> 50.435"
>> "oga_use_default_extent_for_getfeature" "true"
>> "oga_limit_default" "10"
>> "oga_limit_max" "500"
>> "oga_paging" "true"
>> "oga_paging_linkheader" "true"
>> "gml_include_items" "all"
>> "gml_featureid" "lfdnr"
>> END
>>
>> TEMPLATE "/var/www/mapserver/template/dummy.html"
>>
>> END
>>
>> OUTPUTFORMAT
>> NAME "png"
>> DRIVER AGG/PNG
>> MIMETYPE "image/png"
>> IMAGEMODE RGB
>> EXTENSION "png"
>> FORMATOPTION "GAMMA=0.75"
>> END
>>
>> OUTPUTFORMAT
>> NAME "application/json"
>> DRIVER "OGR/GEOJSON"
>> MIMETYPE "application/json"
>> FORMATOPTION "FORM=SIMPLE"
>> FORMATOPTION "STORAGE=memory"
>> END
>>
>> SYMBOL
>> NAME "circle"
>> TYPE ELLIPSE
>> POINTS
>> 1 1
>> END
>> FILLED TRUE
>> END
>>
>> LAYER
>> NAME "kdb_alle"
>> TYPE POINT
>> STATUS ON
>> INCLUDE "_connection_kdb.inc"
>> DATA "the_geom FROM kdb_kultur_ogr USING UNIQUE lfdnr"
>> PROJECTION
>> "init=epsg:4326"
>> END
>>
>> METADATA
>>
>> # OGC API Features Metadaten
>> "oga_title" "KDB Trier - alle
>> Objekte"
>> "oga_description" "Alle Objekte der
>> Kulturdatenbank der Region Trier"
>> "oga_id_field" "lfdnr"
>> "oga_queryable" "true"
>> "oga_extent" "6.074 49.492 7.296
>> 50.435"
>> "ows_title" "KDB Trier - alle
>> Objekte"
>> "ows_abstract" "Alle Objekte der
>> Kulturdatenbank der Region Trier"
>> "oga_extent" "6.074 49.492 7.296
>> 50.435"
>> "oga_use_default_extent_for_getfeature" "true"
>> "oga_limit_default" "10"
>> "oga_limit_max" "500"
>> "oga_paging" "true"
>> "oga_paging_linkheader" "true"
>> "gml_include_items" "all"
>> "gml_featureid" "lfdnr"
>>
>> END
>>
>> TEMPLATE "/var/www/mapserver/template/dummy.html"
>>
>> CLASS
>> NAME "KDB"
>> STYLE
>> SYMBOL "circle"
>> SIZE 6
>> COLOR 255 0 0
>> OUTLINECOLOR 255 255 255
>> END
>> END
>> END # LAYER
>>
>>
>> LAYER
>> NAME "kdb_brunnen"
>> TYPE POINT
>> STATUS ON
>> INCLUDE "_connection_kdb.inc"
>> DATA "the_geom FROM (SELECT * FROM kdb_kultur_ogr WHERE b_kateg
>> = 'Brunnen') AS foo USING UNIQUE lfdnr"
>> PROJECTION
>> "init=epsg:4326"
>> END
>>
>> METADATA
>>
>> # OGC API Features Metadaten
>> "oga_title" "KDB Trier - Brunnen"
>> "oga_description" "Brunnen Objekte der
>> Kulturdatenbank der Region Trier"
>> "oga_id_field" "lfdnr"
>> "oga_queryable" "true"
>> "oga_extent" "6.074 49.492 7.296
>> 50.435"
>> "ows_title" "KDB Trier - Brunnen"
>> "ows_abstract" "Brunnen Objekte
>> der Kulturdatenbank der Region Trier"
>> "oga_extent" "6.074 49.492 7.296
>> 50.435"
>> "oga_use_default_extent_for_getfeature" "true"
>> "oga_limit_default" "10"
>> "oga_limit_max" "500"
>> "oga_paging" "true"
>> "oga_paging_linkheader" "true"
>> "gml_include_items" "all"
>> "gml_featureid" "lfdnr"
>>
>> END
>>
>> TEMPLATE "/var/www/mapserver/template/dummy.html"
>>
>> CLASS
>> NAME "KDB"
>> STYLE
>> SYMBOL "circle"
>> SIZE 6
>> COLOR 255 0 0
>> OUTLINECOLOR 255 255 255
>> END
>> END
>> END # LAYER
>>
>>
>> END # MAP
>>
>> THE MS Version:
>> MapServer version 8.4.0 PROJ version 9.1 GDAL version 3.6 OUTPUT=PNG
>> OUTPUT=JPEG OUTPUT=KML SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE
>> SUPPORTS=CAIRO SUPPORTS=ICONV SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT
>> SUPPORTS=WFS_SERVER SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER
>> SUPPORTS=SOS_SERVER SUPPORTS=OGCAPI_SERVER SUPPORTS=FASTCGI
>> SUPPORTS=THREADS SUPPORTS=GEOS INPUT=JPEG INPUT=POSTGIS INPUT=OGR
>> INPUT=GDAL INPUT=SHAPEFILE INPUT=FLATGEOBUF
>>
>> 1. How can I speed up the display for the first collection?
>> 2. the collections are not recognised in QGIS, What ist wrong?
>>
>> Thanx
>> Sven
>>
>>
>>
>>
>>
>> _______________________________________________
>> MapServer-users mailing list
>> MapServer-users at lists.osgeo.org
>> https://lists.osgeo.org/mailman/listinfo/mapserver-users
>
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