Hi all
Johan has solved this (for QGIS at least). I think the only issues were
a) I wasn't at an appropriate zoom level and in the right area. Other
than that the GDAL file should work fine simply by replacing the URL.
It's possible to define zoom levels in QGIS but I haven;t been able to
figure it out yet. This would be especially useful as using
non-predefined levels makes labels hard to read. There is more info
about this at the original bog post:
http://www.3liz.com/blog/rldhont/index.php?post/2012/07/17/OpenStreetMap-Tiles-in-QGIS
b) just for completeness - I also added '.xml' to my file extension
which may or may not have made any difference.
Anyway, the good news is that it works so any reports back about
further tips and tricks are welcome.
Cheers
L.
On Mon, Feb 3, 2014 at 10:48 PM, Leif Isaksen <[log in to unmask]> wrote:
> Hi Tom, Johan (and Antiquist, where a similar thread has been playing out):
>
> yes, I've got QGIS 2.0.1. as well and it's compiled against GDAL 1.10.
> I also tried setting it (and the project CRS) to both 3857 and
> 900913, which makes a change to the bounds, but not to the content.
> It could be a Mac issue but the OpenStreetmap (and Google, and Bing)
> tiles all worked fine using the GDAL_WMS file which makes me think I
> have a setting wrong somewhere. Zooming doesn't seem to help either.
> Would you be able to send me a copy of your
> GDAL_WMS XML (or perhaps post it somewhere as Tom suggests?
> It would be interesting to see if that works for me, or other Windows users.
>
> Many many thanks
>
> L.
>
>
>
> On Mon, Feb 3, 2014 at 10:11 PM, Tom Elliott <[log in to unmask]> wrote:
>> All:
>>
>> I’m thinking it would be really useful if these how-tos could be put together into a wiki page or some such on the open web so interested folks could find them.
>>
>> Thoughts?
>> Tom
>>
>> Tom Elliott, Ph.D.
>> Associate Director for Digital Programs and Senior Research Scholar
>> Institute for the Study of the Ancient World (NYU)
>> http://isaw.nyu.edu/people/staff/tom-elliott
>>
>>
>>
>> On Feb 3, 2014, at 3:58 PM, Johan Åhlfeldt <[log in to unmask]> wrote:
>>
>>> Hi Leif, All
>>> I followed the example at www.3liz.com (which you referred to below) and first tried the OpenStreetMap tiles, loading the XML file as suggested, and then, edited the ServerUrl to the Url of my own online copy of the tiles. Both attempts worked like a clock. I'm using QGIS 2.01 for Windows. Are you sure your Mac? version of QGIS has support for GDAL 1.7 or later?
>>> Then when opening the XML file as a Raster layer you have to change the projection to EPGS:3857 (=EPGS:900913) which is on the list of supported projections, use the filter to search for that projection. Note that I did not supply the four first zoom levels (0-3) of the Digital Atlas of the Roman Empire (DARE) tiles (http://imperium.ahlfeldt.se), they sure return a black screen, so you have to zoom in a bit. I loaded both the OSM layer and the DARE layer and used the OSM layer to navigate to the area of interest.
>>>
>>> Best regards,
>>> Johan Åhlfeldt
>>> Centre for Theology and Religious studies
>>> Lund University
>>> Sweden
>>>
>>> ----- Original Message ----- From: "Leif Isaksen" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Monday, February 03, 2014 2:39 PM
>>> Subject: Re: [DIGITALCLASSICIST] new open-source historical map tiles and antiquity alacarte beta from AWMC
>>>
>>>
>>> This is a terrific resource. Hats off all round!
>>>
>>> Two quick things:
>>>
>>> - In theory it should be straightforward to import these into QGIS (or
>>> your GIS of choice) using a GDAL WMS description:
>>>
>>> http://www.3liz.com/blog/rldhont/index.php?post/2012/07/17/OpenStreetMap-Tiles-in-QGIS
>>>
>>> In practice however, I get the frame but no content (just a black or
>>> other-coloured square)
>>>
>>> I _have_ managed to use them by hacking the Open Layers plugin and I'm
>>> happy to show anyone show to do this but essentially (in OSX) you
>>> just go to:
>>>
>>> /Users/[your user name]/.qgis2/python/plugins/openlayers_plugin/html/
>>>
>>> and edit one of the html files to point to the tile service. This
>>> isn't a terribly elegant solution though. If anyone can figure out a
>>> working GDAL template I'd be very grateful (and I imagine others would
>>> be too).
>>>
>>>
>>> - Pelagios also has an open tile service for the tiles developed by
>>> Johan Åhlfeldt (they complement the AWMC tiles nicely in fact). We
>>> haven't made a big thing about it because of possible issues with
>>> server load, but perhaps we could mirror AWMC tiles in return for
>>> mirroring ours? If anyone else wants to use them in the meantime then
>>> get in touch.
>>>
>>> All the best
>>>
>>> Leif
>>>
>>>
>>>
>>> On Mon, Feb 3, 2014 at 1:02 PM, Tom Elliott <[log in to unmask]> wrote:
>>>> I thought some here would be interested:
>>>>
>>>> http://awmc.unc.edu/wordpress/blog/2014/02/03/new-public-map-tiles-and-antiquity-a-la-carte-3-0-beta/
>>>>
>>>> "The AWMC is proud to announce the release of a series of geographically accurate, publicly accessible map tiles (http://awmc.unc.edu/wordpress/tiles/ ), suitable for use in nearly any web mapping application or GIS software suite… Along with our tiles, The Ancient World Mapping Center is also releasing a beta version of Antiquity à la Carte 3.0 (http://awmc.unc.edu/awmc/applications/carte-transitional/)…”
>>>>
>>>>
>>>> Tom Elliott, Ph.D.
>>>> Associate Director for Digital Programs and Senior Research Scholar
>>>> Institute for the Study of the Ancient World (NYU)
>>>> http://isaw.nyu.edu/people/staff/tom-elliott
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