[MapProxy] KML in Google Maps

Keith Moss Keith.Moss at landgate.wa.gov.au
Sun Aug 18 23:20:57 PDT 2013


Here's the set of requests that Google Maps is doing to MapProxy: https://gist.github.com/keithamoss/13493e97b7fc4e38a29c

The initial set were for the entire globe, then I gradually zoomed in 5 levels to Australia. As you'll see, it seems to not request tiles beyond zoom level 3. Those last 30 or so should be levels 4 - 5.

Here's the console output for the requests - quite a few 500 errors - https://gist.github.com/keithamoss/5ad09d924abcc2056f96 which correlates with a bunch of these errors in the MapProxy log files

2013-08-19 09:56:57,163 - WARNING - mapproxy.source.wms - expected image response, got: <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<!DOCTYPE ServiceExceptionReport SYSTEM "http://schemas.opengis.net/wms/1.1.1/exception_1_1_1.dtd">
<ServiceExceptionReport version="1.1.1">
  <ServiceException code="InvalidFormat">
Parameter 'width' contains unacceptable value.

I've attached a screenshot of what the initial view looks like where you can see the tiles that didn't load properly and the odd issue with Western Australia behind shifted a way to the north.

Google Maps doesn't - as far as I know - support network links.

I can setup a private map for you to test with if that would help.



Keith Moss
Satellite Remote Sensing Services
65 Brockway Road, FLOREAT WA 6014
PO Box 741 Wembley WA 6913
Ph. (08) 9387 0332 | Fx. (08) 9383 7142
keith.moss at landgate.wa.gov.au

From: Oliver Tonnhofer [olt at omniscale.de]
Sent: Thursday, 15 August 2013 20:51
To: Keith Moss
Cc: mapproxy at lists.osgeo.org
Subject: Re: [MapProxy] KML in Google Maps


On 13.08.2013, at 03:20, Keith Moss wrote:
> Just wondering if anyone has tried loading a KML service out of MapProxy in Google Maps. We're seeing some odd issues and I'm not sure if the fault sits with the KML MapProxy is generating or in how Google Maps is interpreting it.
> Google Maps will happily load the service at the default view for the layer (in this case, the globe), but never seems to load new zoom levels. Additionally, the requests it does make back to MapProxy are all at Z 1, 2, or 3 - never beyond that.
> The same service works fine in Google Earth. Can provide logs and a test service if that'll help, but just wondering if this sounds familiar to someone.

I have never tested the KML service in Google Maps. Does Google Maps support network links? Does it requests any kml files other than the initial one? Do you see any errors on the web developer console of you browser (like Firebug)?


Oliver Tonnhofer    | Omniscale GmbH & Co KG    | http://omniscale.com
http://mapproxy.org | https://github.com/olt    | @oltonn
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