[ckan-dev] problem with spatial previews

Armin Retterath armin.retterath at gmail.com
Thu Aug 13 14:30:04 UTC 2015 

hi matt,

i activated a proxy - for each url path i know :-( :
(dataset/organization/css/js/ ....) for testing:

http://www.gdi-rp-dienste.rlp.de/ckan/

but the ol and leaflet clients are not shown - under 127.0.0.1 it work as
expected :-)

armin





2015-08-13 16:04 GMT+02:00 Matthew Fullerton <matt.fullerton at gmail.com>:

> Then I'm afraid I'm out of ideas...
>
> On 13 August 2015 at 15:00, Armin Retterath <armin.retterath at gmail.com>
> wrote:
>
>> the env vars are set - there is nor problem when running with paster -
>> but as wsgi :-(
>>
>> 2015-08-13 15:43 GMT+02:00 Matthew Fullerton <matt.fullerton at gmail.com>:
>>
>>> I'm not 100% sure I understand the question, but I think you just have
>>> to set the linux environment variables http_proxy and https_proxy in
>>> /etc/environment.
>>>
>>> On 13 August 2015 at 14:40, Armin Retterath <armin.retterath at gmail.com>
>>> wrote:
>>>
>>>> hi matt,
>>>>
>>>> i installed some things to get the site available from www. the main
>>>> problem is now, that ckan don't have the proxy environment activated
>>>> (connections are only available over proxy) if it runs over wsgi mode - do
>>>> you know how to setup the environment for this installation?
>>>>
>>>> armin
>>>>
>>>> 2015-08-13 12:56 GMT+02:00 Matthew Fullerton <matt.fullerton at gmail.com>
>>>> :
>>>>
>>>>> Hi Armin,
>>>>> A problem in general with a lot of your links is that they require
>>>>> extra URL parameters. In its current form, the geo-view wants to truncate
>>>>> the link and then add the SERVICE and REQUEST itself, which is not enough
>>>>> to get data from your geoserver(s). I just experimented with the code to
>>>>> get it to preserve additional parameters. It worked, but its experimental
>>>>> :-)
>>>>>
>>>>> I did manage to find a RLP link that "worked" in CKAN, via the RLP
>>>>> open data portal:
>>>>>
>>>>> http://213.139.159.34/geoserver/wsg/wfs?SERVICE=WFS&VERSION=1.1.0&REQUEST=GetCapabilities&SERVICE=WFS
>>>>>
>>>>> When you exchange WMS for WFS, it works. But WFS gives me the same
>>>>> error as I always get about "uncaught exception: Can't find a
>>>>> WFSCapabilities parser for version 2.0.0". So I'm not making any progress
>>>>> here.
>>>>>
>>>>> When you are able to, send me a WFS link that "works" in your CKAN in
>>>>> the sense that you get the transform error but not the parser error.
>>>>>
>>>>> I'll try and clean up my code for preserving the extra parameters and
>>>>> submit a pull request.
>>>>>
>>>>> I didn't write open layers, open layers helper or geo-view extension,
>>>>> so I can't answer your question about transforms. My understanding was that
>>>>> because WFS is vector data open layers has the ability to shape it to a
>>>>> base map.
>>>>>
>>>>> Best,
>>>>> Matt
>>>>>
>>>>>
>>>>>
>>>>> On 12 August 2015 at 14:42, Armin Retterath <armin.retterath at gmail.com
>>>>> > wrote:
>>>>>
>>>>>>
>>>>>> http://mapserver.lgb-rlp.de/cgi-bin/erdbeben?&request=GetCapabilities&VERSION=1.1.0&SERVICE=WFS
>>>>>>
>>>>>> but we have hundreds of wfs in our geoportal ;-)
>>>>>>
>>>>>> http://www.geoportal.rlp.de
>>>>>>
>>>>>> if you need another link, please ask - ckan 2.4 was able to request
>>>>>> the caps and show the featuretypes as layers in the ol client - only the
>>>>>> get feature request has the problem with the wrong crs
>>>>>> armin
>>>>>>
>>>>>>
>>>>>> 2015-08-12 15:31 GMT+02:00 Matthew Fullerton <
>>>>>> matt.fullerton at gmail.com>:
>>>>>>
>>>>>>> Can you send me the WFS link? Is it open? It would be interesting to
>>>>>>> have a link which doesn't have the XML problem, in which case it could of
>>>>>>> course be that there are further problems!
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Matt
>>>>>>>
>>>>>>> On 12 August 2015 at 13:56, Armin Retterath <
>>>>>>> armin.retterath at gmail.com> wrote:
>>>>>>>
>>>>>>>> you can see the message in firebug. also the wfs response is there
>>>>>>>> and the server gives an exception for the epsg:3857. the problem is, that
>>>>>>>> my installation is in our intranet and not available in the www already
>>>>>>>> (i've got the same problem as it was on the list today - proxying is not
>>>>>>>> possible, because ckan don't react on the site_url definition :-( )
>>>>>>>> i can give you further information tomorrow ;-)
>>>>>>>> thanx
>>>>>>>> armin
>>>>>>>>
>>>>>>>> 2015-08-12 12:52 GMT+02:00 Matthew Fullerton <
>>>>>>>> matt.fullerton at gmail.com>:
>>>>>>>>
>>>>>>>>> My problem so far was that OpenLayers said it couldn't cope with
>>>>>>>>> that version of the XML standard. Where in the code do you see the demand
>>>>>>>>> for 3857? There was a similar issue with the WMS code. However, for WFS I
>>>>>>>>> would have though that it should be less of a problem as the data can be
>>>>>>>>> transformed.
>>>>>>>>>
>>>>>>>>> -Matt
>>>>>>>>>
>>>>>>>>> On 12 August 2015 at 11:38, Armin Retterath <
>>>>>>>>> armin.retterath at gmail.com> wrote:
>>>>>>>>>
>>>>>>>>>> hi matt,
>>>>>>>>>> the wfs may have a problem with the requested crs - the client
>>>>>>>>>> demands epsg:3857 but most services support only 4326 - maybe we have to
>>>>>>>>>> alter the default crs in the ini file?
>>>>>>>>>> best regards,
>>>>>>>>>> armin
>>>>>>>>>>
>>>>>>>>>> 2015-08-12 11:59 GMT+02:00 Matthew Fullerton <
>>>>>>>>>> matt.fullerton at gmail.com>:
>>>>>>>>>>
>>>>>>>>>>> I can confirm that WFS does not work.
>>>>>>>>>>>
>>>>>>>>>>> KML, GeoJSON and WMS should all be working:
>>>>>>>>>>> KML:
>>>>>>>>>>> https://smartlane.io/dataset/different-geo-visualizations/resource/06df2d49-5920-42e8-b73d-860aeea823a8
>>>>>>>>>>> GeoJSON works but I recommend you use the GeoJSON view installed
>>>>>>>>>>> with ckanext_geoview and not the openlayers view.
>>>>>>>>>>> https://smartlane.io/dataset/different-geo-visualizations/resource/d31fcbfb-6611-48b5-91f4-630553316521
>>>>>>>>>>> WMS:
>>>>>>>>>>> https://smartlane.io/dataset/different-geo-visualizations/resource/045d88a8-6a1e-4f41-b23c-fa5efa549d34
>>>>>>>>>>>
>>>>>>>>>>> Regarding WMS take a look at the URL on the example page to
>>>>>>>>>>> check you are putting something sensible in. There is a request to
>>>>>>>>>>> visualize individual layers (
>>>>>>>>>>> https://github.com/ckan/ckanext-geoview/issues/22)
>>>>>>>>>>>
>>>>>>>>>>> And in general, it's worth installing the extension from the
>>>>>>>>>>> latest master code on GitHub and not from pip.
>>>>>>>>>>>
>>>>>>>>>>> Best,
>>>>>>>>>>> Matt
>>>>>>>>>>>
>>>>>>>>>>> On 12 August 2015 at 10:45, Armin Retterath <
>>>>>>>>>>> armin.retterath at gmail.com> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> hi sol,
>>>>>>>>>>>>
>>>>>>>>>>>> i solved the issue by activating the view in the frontend -
>>>>>>>>>>>> maybe the docu is not quiet clear :-( .
>>>>>>>>>>>> i thought, that the default view will sufficient - but
>>>>>>>>>>>> ckan.views.default_views setting don't activate the views for the resource
>>>>>>>>>>>> automatically :-( - i had to activate it in the frontend for each view - is
>>>>>>>>>>>> this realistic?
>>>>>>>>>>>> another problem is, that the wms preview don't work as it
>>>>>>>>>>>> should do. the layers are directly requested with the url of the that is
>>>>>>>>>>>> defined in the resource. this is not right. first the GetCapabilities
>>>>>>>>>>>> request has to be done and the GetMap url has to be extracted. with this
>>>>>>>>>>>> url the map can be invoked correctly. i 've done a adoption for the code
>>>>>>>>>>>> two years ago. maybe i find it and can give it back to the list.
>>>>>>>>>>>>
>>>>>>>>>>>> also simple wfs are not supported - i tested
>>>>>>>>>>>> http://mapserver.lgb-rlp.de/cgi-bin/erdbeben?&request=GetCapabilities&VERSION=1.1.0&SERVICE=WFS
>>>>>>>>>>>>
>>>>>>>>>>>> i also tested kml and geojson preview with follwoning urls:
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> http://www.geoportal.rlp.de/mapbender/php/mod_GetPublishedData.php?wmc_id=13986&outputFormat=geojson
>>>>>>>>>>>>
>>>>>>>>>>>> http://www.geoportal.rlp.de/mapbender/php/mod_GetPublishedData.php?wmc_id=13986&outputFormat=kml
>>>>>>>>>>>>
>>>>>>>>>>>> but the resource is not shown on the map :-( - maybe s.o. knows
>>>>>>>>>>>> the problem.
>>>>>>>>>>>>
>>>>>>>>>>>> thanx in advance,
>>>>>>>>>>>> armin
>>>>>>>>>>>>
>>>>>>>>>>>> 2015-08-12 4:23 GMT+02:00 李承錱[Sol] <u103133.u103135 at gmail.com>:
>>>>>>>>>>>>
>>>>>>>>>>>>> Hi Armin:
>>>>>>>>>>>>>
>>>>>>>>>>>>> I'm using CKAN 2.4.0 and ckanext-geoview without any problems.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Is there any error in the log file?
>>>>>>>>>>>>>
>>>>>>>>>>>>> And, do you specify the correct format name in the resource
>>>>>>>>>>>>> metadata ("geojson" for geojson resources and "wms" for wms resources)? The
>>>>>>>>>>>>> format column for resource is required to decide the available views.
>>>>>>>>>>>>>
>>>>>>>>>>>>> To get the spatial search, you should still install the
>>>>>>>>>>>>> ckanext-spatial
>>>>>>>>>>>>> <http://ckanext-spatial.readthedocs.org/en/latest/install.html>
>>>>>>>>>>>>> extension and follow the guide
>>>>>>>>>>>>> <http://ckanext-spatial.readthedocs.org/en/latest/spatial-search.html>
>>>>>>>>>>>>> to set up it. The ckanext-geoview is only for previewing spatial resources.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Cheers,
>>>>>>>>>>>>>
>>>>>>>>>>>>> Sol
>>>>>>>>>>>>>
>>>>>>>>>>>>> 2015-08-10 23:22 GMT+08:00 Armin Retterath <
>>>>>>>>>>>>> armin.retterath at gmail.com>:
>>>>>>>>>>>>>
>>>>>>>>>>>>>> hi matt,
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> thanx for the info.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> i set now set following definitions:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> ckan.plugins = stats geo_view text_view datastore image_view
>>>>>>>>>>>>>> resource_proxy
>>>>>>>>>>>>>> ckan.views.default = image_view geo_view
>>>>>>>>>>>>>> ckan.spatial.srid = 4326
>>>>>>>>>>>>>> ckanext.geoview.ol_viewer.formats = wms kml geojson
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> but nothing happens .-( . before i activated both plugins -
>>>>>>>>>>>>>> also nothing happens. neither the spatial_metadata nor spatial_query had
>>>>>>>>>>>>>> any effect on the portal - do i have to do more configuration? maybe
>>>>>>>>>>>>>> activate a spatial search widget as it was so in 1.8.1b - which i tested
>>>>>>>>>>>>>> some years ago?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> i need a spatial search widget and options to view wms,
>>>>>>>>>>>>>> geojson and maybe use wfs.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> - or should i go directly to 2.5a - is there a compatibility
>>>>>>>>>>>>>> list for the spatial extensions? can they be activated parallel?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> thanx in advance,
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> armin
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> 2015-08-10 12:20 GMT+02:00 Matthew Fullerton <
>>>>>>>>>>>>>> matthew at smartlane.de>:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Dear Armin,
>>>>>>>>>>>>>>> Are you using ckanext-geoview or ckanext-spatial?
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> For the WMS viewer I think you need to specify which file
>>>>>>>>>>>>>>> types you want to offer previews for, e.g.:
>>>>>>>>>>>>>>> ckanext.geoview.ol_viewer.formats = wms kml
>>>>>>>>>>>>>>> https://github.com/ckan/ckanext-geoview#openlayers-viewer
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> In general, and specifically for the GeoJSON problem, check
>>>>>>>>>>>>>>> that the file formats are set for the resource. I think it needs to be
>>>>>>>>>>>>>>> 'geojson' for a GeoJSON file and 'wms' for the WMS resource.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Best,
>>>>>>>>>>>>>>> Matt
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> *Projekt SMARTLANE*
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> matthew at smartlane.de <florian at smartlane.de>
>>>>>>>>>>>>>>> T +49.89.289.28575
>>>>>>>>>>>>>>> F +49.89.289.22333
>>>>>>>>>>>>>>> www.smartlane.de
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> EXIST-Gründungsvorhaben „Tapestry“
>>>>>>>>>>>>>>> c/o Lehrstuhl für Verkehrstechnik
>>>>>>>>>>>>>>> Technische Universität München
>>>>>>>>>>>>>>> Arcisstraße 21
>>>>>>>>>>>>>>> 80333 München
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Gefördert vom Bundesministerium für Wirtschaft und
>>>>>>>>>>>>>>> Technologie
>>>>>>>>>>>>>>> aufgrund eines Beschlusses des Deutschen Bundestages.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> ------------------------------
>>>>>>>>>>>>>>> *Von:* ckan-dev <ckan-dev-bounces at lists.okfn.org> im
>>>>>>>>>>>>>>> Auftrag von Armin Retterath <armin.retterath at gmail.com>
>>>>>>>>>>>>>>> *Gesendet:* Freitag, 7. August 2015 12:07
>>>>>>>>>>>>>>> *An:* CKAN Development Discussions
>>>>>>>>>>>>>>> *Betreff:* [ckan-dev] problem with spatial previews
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> hello together,
>>>>>>>>>>>>>>> i freshly installed ckan 2.4.0 with the spatial extensions
>>>>>>>>>>>>>>> on an debian 8 environment (including  datastore).
>>>>>>>>>>>>>>> in the frontend the options for show wms, geojson, ... are
>>>>>>>>>>>>>>> not displayed :-( .
>>>>>>>>>>>>>>> it seems to be, that ckan don't find the plugins?
>>>>>>>>>>>>>>> here are my entries in the development.ini:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> ckan.plugins = stats text_view datastore image_view
>>>>>>>>>>>>>>> recline_view spatial_metadata spatial_query geo_view geojson_view
>>>>>>>>>>>>>>> resource_proxy
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> # Define which views should be created by default
>>>>>>>>>>>>>>> # (plugins must be loaded in ckan.plugins)
>>>>>>>>>>>>>>> ckan.views.default_views = ckanext-geoview geojson_view
>>>>>>>>>>>>>>> geo_view image_view text_view recline_view recline_map_view
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> thanx in advance
>>>>>>>>>>>>>>> armin
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> _______________________________________________
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>>>>>>>>>>>>>>> ckan-dev at lists.okfn.org
>>>>>>>>>>>>>>> https://lists.okfn.org/mailman/listinfo/ckan-dev
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>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
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