Use Swisstopo Map as Overlay in Googlemaps

[Mario Kaufmann]

Hi

Does someone know if it is possible to add a Swisstopo Map as overlay in Googlemaps?

I have found this post but don't know if it is up to date: https://groups.google.com/forum/#!topic/geoadmin-api/vzGYM3u2JXE

Does someone have a working solution or code for that?

[David Oesch]

post is up to date 

example

https://www.procrastinatio.org/mercator/google.html

do mind that you need to register your referrer as described in https://shop.swisstopo.admin.ch/de/products/geoservice/swisstopo_geoservices/WMTS_info

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[Mario Kaufmann]

Ok, thanks

Am Samstag, 14. April 2018 14:08:21 UTC+2 schrieb David Oesch:

post is up to date 

example

https://www.procrastinatio.org/mercator/google.html

do mind that you need to register your referrer as described in https://shop.swisstopo.admin.ch/de/products/geoservice/swisstopo_geoservices/WMTS_info

On Fri, Apr 13, 2018 at 1:42 PM, Mario Kaufmann <marioka...@gmail.com> wrote:

Hi

Does someone know if it is possible to add a Swisstopo Map as overlay in Googlemaps?

I have found this post but don't know if it is up to date: https://groups.google.com/forum/#!topic/geoadmin-api/vzGYM3u2JXE

Does someone have a working solution or code for that?

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[Mario Kaufmann]

Hi

In your example "http://www.procrastinatio.org/mercator/google.html" is a problem with some tiles: When i zoom into the map, partly single tiles don't load and appears as grey tile. When i zoom to the maximum it doesnt load any tiles and only a grey area appears. Does somebody know how i can solve this issue?

[Loïc Gasser]

Hi,

here is an updated version on codepen.

https://codepen.io/loicgasser/pen/LmOzYK

You have to play with the min and max zoom levels of these layers.

Check these out in the example above.

Loïc Gasser

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[Marc Monnerat]

Hello,

you have to set a maxZoom, the max zoom level the WMTS server is serving. See the WMTS GetCapabilities (https://wmts.geo.admin.ch/EPSG/3857/1.0.0/WMTSCapabilities.xml), for instance it is 21 for the orthophotos (ch.swisstopo.swissimage). And use current as timestamp (or anything specified in the Dimension of the above mentioned document)

     var OrthophotoType = new google.maps.ImageMapType({
         maxZoom: 21,
         minZoom: 7,
         name: "Orthophoto",
         tileSize: new google.maps.Size(256, 256),
         credit: 'swisstopo',
         getTileUrl: function(coord, zoom) {
                     return BASE_URL +  '/1.0.0/ch.swisstopo.swissimage/default/current/3857/'+ zoom + "/" + coord.x + "/" + coord.y + ".jpeg";
                 }
   });

I did update the example:

https://www.procrastinatio.org/mercator/google.html

Regards,

Marc

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