[ckan-dev] problem with spatial previews

Matthew Fullerton matt.fullerton at gmail.com
Thu Aug 13 14:04:32 UTC 2015 

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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>>>>>>>>>>>>>>
>>>>>>>>>>>>>
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