[OpenLayers-Users] need help figuring out WMTS parameters for simple webmap

[Andreas Hocevar]

You may want to have a look at
http://openlayers.org/dev/examples/mobile-wmts-vienna.js, which shows
both how to configure WMTS layers manually and how to create them from
a GetCapabilities response.

OpenLayers.Layer.XYZ won't help you in most cases, because WMTS layers
can have a different grid layout for each resolution.

Andreas.

On Thu, Feb 21, 2013 at 5:29 AM, Donovan Cameron <sault.don at gmail.com> wrote:
> Hello OpenLayers List!
>
> My first time working with OL and I've been trying to get a WMTS[1] to load
> in version 2.11 and feel like I'm getting close because it is grabbing
> tiles, sort of...
>
> This is so that I can modify a plugin[2] for QGIS to let me load this WMTS
> as a basemap.
>
> But I can't figure out what some of the needed parameters are - been trying
> to interpret the GetCapabilities[1] xml and have figured some stuff out I
> think.
>
> I'm using the OpenLayers.Layer.XYZ method because this WMTS use that form of
> URL for requests:
> http://maps.wien.gv.at/wmts/lb/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.jpeg
>
> So under the OpenLayers.map part, I have...
> maxExtent: new OpenLayers.Bounds(1799448.39, 6124949.74, 1848250.44,
> 6162571.82)
>
> ...which I got from generating an extent polygon from the two x,y points
> given by the Lower/UpperCorner in the TileMatrixSet.
>
> I don't know if that was the right way to get the bounds... but in QGIS[3]
> it looks OK with overtop Google basemaps..
>
> So then I used that polygons centre x,y to fill out the setCenter option:
> map.setCenter(new OpenLayers.LonLat(1823849.41, 6143760.78), 0);
>
> I don't know what to enter for the maxResolution or if I've set the two
> options correctly:
> sphericalMercator: false,
> wrapDateLine: false,
>
> The file I'm trying to get working is openlayers/html/schnittstellen.html
> and that is found in the zipfile[4] I uploaded to my dropbox.
> All the other HTML files in that folder work as expected. When I open that
> file, it grabs an empty white tile and this is the example URL:
> http://maps1.wien.gv.at/wmts/lb/farbe/google3857/0/67/52.jpg
>
> But I don't know why it's not working - can someone help me figure this out
> please? Thanks in advance.
>
> [1] http://maps.wien.gv.at/wmts/1.0.0/WMTSCapabilities.xml
> [2] http://plugins.qgis.org/plugins/openlayers_plugin/
> [3] http://susepaste.org/images/7ea74f53.jpeg
> [4] https://dl.dropbox.com/u/33592962/outgoing/openlayers.zip
>
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>



--
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.