Hi,
I have some code to build a vector tile based on qgsVectorLayer but I
have not yet time to build a QGIS Server Plugin to use it. I'll be
pleased to do it.
Regards,
René-Luc
Le 19/06/2016 02:36, Thomas Gratier a écrit :
Hi,
Although it will not change the issue to support vector tiles in QGIS
Server, TileStache does support PBF. It's just that you need the
forked version from Mapzen e.g
https://github.com/mapzen/TileStache/blob/integration-1/TileStache/Goodies/VecTiles/mvt.py
Cheers
Thomas Gratier
2016-06-19 1:51 GMT+02:00 Nikolai Bezdna <[email protected]
<mailto:[email protected]>>:
Hi Marco,
As far as I know vector tiles can’t be generated out of WMS
services, because WMS spec is mostly used for getting raster
images (GetMap request) or feature information (GetFeatureInfo
request) and some others.
I guess you meant WFS really, but I don’t know any caching server
implementations that use WFS as a background and generate vector
tiled PBFs (particularly in Mapbox Vector Tiles spec
<https://github.com/mapbox/vector-tile-spec>).
I didn’t use MapServer MapCache
<http://www.mapserver.org/mapcache/>, but according to the docs
it doesn’t support vector tiles, only raster ones. MapProxy and
TileCache don’t support them either. TileStache can produce vector
tiles out of OGR datasource, but in GeoJSON format, which is way
heavier than PBF, even gzipped.
So the good way to go would be to use the OGR MVT driver, but
unfortunately it’s not released and the status of it’s development
is unknown. While web is moving fast towards in-browser rendering
(OpenLayers3 and Mapbox GL already utilise WebGL for that) it’s
becoming clear QGIS server should support vector tiles at some
point. Should I start with a feature request maybe?
Regards,
Nick
From: Marco Hugentobler <[email protected]
<mailto:[email protected]>>
To: [email protected]
<mailto:[email protected]>
Subject: Re: [Qgis-developer] Any plans for implementing vector tile
generation on QGIS Server?
Message-ID: <[email protected]
<mailto:[email protected]>>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Hi Nikolai
Most vector tile generators can work with any WMS in the background.
E.g. using MapCache with QGIS server should be perfectly possible.
Regards,
Marco
On 06/18/16 10:13, Nikolai Bezdna wrote:
I’d like to know if there are any plans for enabling serving vector
tiles from QGIS Server, so they can be used in client libraries like
Mapbox GL afterwards. Seems like GDAL (OGR really) MVT driver is
stuck
in development and there already are some stand-alone
implementations,
like utilery (https://github.com/tilery/utilery) or Mapnik vector
tile
(https://github.com/mapbox/mapnik-vector-tile), but nothing is
integrated with QGIS server. Since Mapbox and ESRI adopted MVT, and
most major web basemaps (like Google, Apple etc.) are already vector
tile based, it seems like QGIS is running a bit behind in this
field.
So it would be great to start a discussion on utilising vector tile
spec within QGIS.
Cheers
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