[ckan-dev] problem with spatial previews

Armin Retterath armin.retterath at gmail.com
Thu Aug 13 14:00:23 UTC 2015 

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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>>>>>>>>>>>>> https://lists.okfn.org/mailman/listinfo/ckan-dev
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>>>>>>>>>>>>>
>>>>>>>>>>>>
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>>>>>>>>>>>>
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