topic Re: GeoAnalytics plus WFS load. How to do it? in GeoAnalytics

GeoAnalytics plus WFS load. How to do it?

jarnontc — Wed, 07 Nov 2018 11:59:42 GMT

Hi,

I tried to load weather / lightning stroke information from below link with GeoAnalytics plus. I didn't success yet. I got Error Code: "Unable to parse request". If I got it right way, it should be possible load data with WFS format to setup file type as GML. Could someone giving details of setup, what's missing my setup.

I see that <wfs:member> element name is not exact same, what is in GeoAnalytics connector setup > GML - For reading GML files or connecting to WFS services. Reads featureCollection files and makes one row of each featureMember element. Any matter?

http://opendata.fmi.fi/wfs/fin?service=WFS&version=2.0.0&request=GetFeature&storedquery_id=fmi::observations::lightning:…‌

My setup:

Thank You,

Best Regards

Jarno

Re: GeoAnalytics plus WFS load. How to do it?

Patric_Nordstrom — Fri, 23 Nov 2018 09:20:20 GMT

Hi,

I was able to render the points using the static geodata layer. The geometry attribute is a bit hidden in the BsWfsElement so the straight load seems not be working, will chase why.

Thanks,

Patric

Re: GeoAnalytics plus WFS load. How to do it?

jarnontc — Fri, 23 Nov 2018 11:46:33 GMT

Hi Patric

Thank you for help. I managed now load data too with small change. I used https:// instead http://

Best Regards

Jarno

Re: GeoAnalytics plus WFS load. How to do it?

Miay — Wed, 30 Jan 2019 08:34:38 GMT

Hi Patric,

You wrote that you were able to render a static geodata layer. But does the wfs only work with geodata layers? Or does it work with point & polygon layers also?

And is it possible to set up more than one layer based on wfs?

Regards,

/Mikael

Re: GeoAnalytics plus WFS load. How to do it?

Patric_Nordstrom — Wed, 30 Jan 2019 12:18:41 GMT

Sure, the all layers can feed on WFS sources including point, area and line.
Yes, it's possible to have several layers at the same time.
Thanks,
Patric

Re: GeoAnalytics plus WFS load. How to do it?

Miay — Wed, 30 Jan 2019 15:09:12 GMT

Thanks for the answer!

I would also like to ask you about how the Qlik Geoanalytics connector consumes a WFS. Will the data be loaded completely when the application starts or will the application fetch the data dynamically as the user uses and zooms into the map?

If a WFS layer has one million features that, and a user only needs the features at a certain zoom level and at a certain part of the map, it might be a problem if one million features are loaded directly when the application starts.

Is it the same behaviour for both a polygon/point-layer and a geodata-layer that consumes a WFS?

Regards,

/ Mikael

Re: GeoAnalytics plus WFS load. How to do it?

Patric_Nordstrom — Thu, 31 Jan 2019 12:06:36 GMT

There is no automatic paging or bounds function in the current WFS connection, both in connector load operation and the dynamic feed to layers. All data is loaded at request.

Some WFS sources have custom options for filtering that can be applied in the url. Here's two examples, filter by id or by max min x y:

='http://geodata.nationaalgeoregister.nl/bag/wfs?REQUEST=GetFeature&SERVICE=WFS&VERSION=1.0.0&TYPENAME=bag:pand&SRSNAME=EPSG:4326&cql_filter=(identificatie%20IN%20(' &
concat(identifica, ',') &
'))'

='http://geodata.nationaalgeoregister.nl/bag/wfs?REQUEST=GetFeature&SERVICE=WFS&VERSION=1.0.0&TYPENAME=bag:pand&SRSNAME=EPSG:4326&cql_filter=(bbox(geometrie,' &
floor(min(lo),0.001) & ',' &
floor(min(la),0.001) & ',' &
ceil(max(lo),0.001) & ',' &
Ceil(max(la),0.001) & ',%27EPSG:4326%27))'

Thanks,
Patric