[ckan-dev] [ckan-global-user-group] Important: MapQuest tiles failing on spatial widgets and maps, workarounds and alternatives

[Matthew Fullerton]

For some views (e.g. KML) the server switching part doesn't work and the
thunderforest link needs to be:

e.g. ckanext.spatial.common_map.custom.url = https://
tile.thunderforest.com/transport/{z}/{x}/{y}.png
<http://tile.thunderforest.com/transport/%7Bz%7D/%7Bx%7D/%7By%7D.png>

or even better ckanext.spatial.common_map.custom.url = //
tile.thunderforest.com/transport/{z}/{x}/{y}.png
<http://tile.thunderforest.com/transport/%7Bz%7D/%7Bx%7D/%7By%7D.png>

(http for http connection and https for https)

-Matt


On 12 July 2016 at 18:13, Adrià Mercader <adria.mercader at okfn.org> wrote:

> Hi all,
>
> If your favourite CKAN instance uses any of the map widgets provided
> by ckanext-spatial or ckanext-geoview (spatial query, dataste extent,
> GeoJSON preview, etc), chances are that you are getting an ugly image
> from MapQuest instead of the usual base map:
>
> http://otile1.mqcdn.com/tiles/1.0.0/osm/0/0/0.png
>
> This was caused by MapQuest discontinuing support for direct access to
> map tiles (In my opinion rather abruptly, and looking at the forums
> the CKAN community is not the only one that has missed this):
>
>
> http://devblog.mapquest.com/2016/06/15/modernization-of-mapquest-results-in-changes-to-open-tile-access/
>
>
> You can provide a working alternative right now without any code
> change, just by configuring an alternative base layer [1]. The
> recommended options are:
>
> 1. MapBox. Register for an account [2] and get an access token. Then
> set the following configuration on your ini file:
>
> ckanext.spatial.common_map.type = mapbox
> ckanext.spatial.common_map.mapbox.map_id = youraccount.map-xxxxxxxx
> ckanext.spatial.common_map.mapbox.access_token = pk.ey...
>
>
> 2. Other tile providers. There are a couple of other free tile
> providers that don't require registration or have free plans.
> Thunderforest (http://www.thunderforest.com/) offers OSM based tiles.
> (registration is recommended [3]). Here are the configuration options
> that you should use:
>
> ckanext.spatial.common_map.type = custom
> ckanext.spatial.common_map.custom.url =
> https://{s}.tile.thunderforest.com/transport/{z}/{x}/{y}.png
> ckanext.spatial.common_map.attribution = Maps © <a
> href="http://www.thunderforest.com">Thunderforest</a>, Data © <a
> href="http://www.openstreetmap.org/copyright">OpenStreetMap
> contributors</a>
>
> Maptiles (https://maptiles.xyz/) offers two base maps based on OSM.
> (I'd recommend clarify with the author its terms of use):
>
> ckanext.spatial.common_map.type = custom
> ckanext.spatial.common_map.custom.url =
> http://{s}.osm.maptiles.xyz/{z}/{x}/{y}.png
> ckanext.spatial.common_map.attribution = &copy <a
> href="http://www.openstreetmap.org/copyright"
> target="_blank">OpenStreetMap</a> contributors. Tiles provided by <a
> href="https://maptiles.xyz">MapTiles</a>.
>
>
> Please if you are using the widgets on a production site consider
> checking the terms for all options described here, and do not hesitate
> to contact any of them if you have any doubts regarding usage.
>
> As for MapQuest support, given the new Leaflet plugin required [4] and
> the current structure of the JS modules it is not trivial to support
> it straight away. If someone has extra time to submit a patch that
> allows to use the new plugin that would be great.
>
> In any case, it definitely seems like it should not be the default
> option any more.
>
>
> Hope this helps in the short term.
>
> Any question just ask.
>
>
>
> Adrià
>
>
> [1]
> http://docs.ckan.org/projects/ckanext-spatial/en/latest/map-widgets.html
> [2] https://www.mapbox.com/pricing/
> [3] http://www.thunderforest.com/pricing/
> [4] https://developer.mapquest.com/documentation/leaflet-plugins
>
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