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Hi,<br>
<br>
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.<br>
<br>
Regards,<br>
René-Luc<br>
<br>
<div class="moz-cite-prefix">Le 19/06/2016 02:36, Thomas Gratier a
écrit :<br>
</div>
<blockquote
cite="mid:CACPZzQ2c4iBuX2ic32WgkUKXhitt5xJaokuWH4A1EAKVbu=Qzg@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>
<div>
<div>Hi,<br>
<br>
</div>
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 <a
moz-do-not-send="true"
href="https://github.com/mapzen/TileStache/blob/integration-1/TileStache/Goodies/VecTiles/mvt.py"><a class="moz-txt-link-freetext" href="https://github.com/mapzen/TileStache/blob/integration-1/TileStache/Goodies/VecTiles/mvt.py">https://github.com/mapzen/TileStache/blob/integration-1/TileStache/Goodies/VecTiles/mvt.py</a></a><br>
<br>
</div>
Cheers<br>
<br>
</div>
Thomas Gratier<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">2016-06-19 1:51 GMT+02:00 Nikolai
Bezdna <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:mofoyoda@gmail.com" target="_blank">mofoyoda@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word">
<div>Hi Marco,</div>
<div><br>
</div>
<div>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. </div>
<div>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 <a moz-do-not-send="true"
href="https://github.com/mapbox/vector-tile-spec"
target="_blank">Mapbox Vector Tiles spec</a>). </div>
<div>I didn’t use MapServer <a moz-do-not-send="true"
href="http://www.mapserver.org/mapcache/"
target="_blank">MapCache</a>, 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.</div>
<div>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?</div>
<div><br>
</div>
<div>Regards,</div>
<div>Nick</div>
<div><br>
</div>
From: Marco Hugentobler <<a moz-do-not-send="true"
href="mailto:marco.hugentobler@sourcepole.ch"
target="_blank">marco.hugentobler@sourcepole.ch</a>><br>
To: <a moz-do-not-send="true"
href="mailto:qgis-developer@lists.osgeo.org"
target="_blank">qgis-developer@lists.osgeo.org</a><br>
Subject: Re: [Qgis-developer] Any plans for implementing
vector tile<br>
<span style="white-space:pre-wrap"> </span>generation on
QGIS Server?<br>
Message-ID: <<a moz-do-not-send="true"
href="mailto:5765066C.3000905@sourcepole.ch"
target="_blank">5765066C.3000905@sourcepole.ch</a>><br>
Content-Type: text/plain; charset="utf-8"; Format="flowed"<span
class=""><br>
<br>
Hi Nikolai<br>
<br>
Most vector tile generators can work with any WMS in the
background. <br>
E.g. using MapCache with QGIS server should be perfectly
possible.<br>
<br>
Regards,<br>
Marco<br>
<br>
On 06/18/16 10:13, Nikolai Bezdna wrote:<br>
<blockquote type="cite">I’d like to know if there are
any plans for enabling serving vector <br>
tiles from QGIS Server, so they can be used in client
libraries like <br>
Mapbox GL afterwards. Seems like GDAL (OGR really) MVT
driver is stuck <br>
in development and there already are some stand-alone
implementations, <br>
like utilery (<a moz-do-not-send="true"
href="https://github.com/tilery/utilery"
target="_blank">https://github.com/tilery/utilery</a>)
or Mapnik vector tile <br>
(<a moz-do-not-send="true"
href="https://github.com/mapbox/mapnik-vector-tile"
target="_blank">https://github.com/mapbox/mapnik-vector-tile</a>),
but nothing is <br>
integrated with QGIS server. Since Mapbox and ESRI
adopted MVT, and <br>
most major web basemaps (like Google, Apple etc.) are
already vector <br>
tile based, it seems like QGIS is running a bit behind
in this field. <br>
So it would be great to start a discussion on
utilising vector tile <br>
spec within QGIS.<br>
<br>
Cheers</blockquote>
</span></div>
<br>
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