[ka-Map-users] tiling print service (WMS)

[Bart van den Eijnden (OSGIS)]

Hi Ed,

but won't that consume too much memory?

For generating a 15.000 x 15.000 pixels PNG24 image Mapserver would take
about 900 Mb into memory or not?

Best regards,
Bart

> Bart -
>
> I'm not aware that a 2048x2048 pixel limit is "normal" for WMS servers.
> That's the default limit for MapServer but it is very easily changed.
> I've done that for several years and produce very large images from
> single MapServer WMS requests.
>
> 	- Ed
>
> Ed McNierney
> President and Chief Mapmaker
> TopoZone.com / Maps a la carte, Inc.
> 73 Princeton Street, Suite 305
> North Chelmsford, MA  01863
> Phone: +1 (978) 251-4242
> Fax: +1 (978) 251-1396
> ed at topozone.com
>
> -----Original Message-----
> From: ka-map-users-bounces at lists.maptools.org
> [mailto:ka-map-users-bounces at lists.maptools.org] On Behalf Of Bart van
> den Eijnden (OSGIS)
> Sent: Wednesday, May 10, 2006 7:52 AM
> To: ka-map-users at lists.maptools.org
> Subject: [ka-Map-users] tiling print service (WMS)
>
> Hi list,
>
> can the ka-map tiling logic be used to create a WMS print service?
>
> Imagine our use case, people wanting to print on A0 paper from ArcGIS,
> and ArcGIS has a WMS layer for aerial photographs in it. Ofcourse normal
> WMS services limit themselves to 2048x2048 pixels like Mapserver does.
> But ArcGIS requests an image of about 15000 pixels wide.
>
> If a tiling php script could act as WMS service, and would ask for
> 2048x2048 tiles to the aerial photograph WMS, and stream that back to
> the client (ArcGIS), it could be a solution. Could ka-map be used for
> this?
> Would it be a lot of work?
>
> Also, is it possible to stream back the whole 15000x15000 pixels image
> without taking the whole thing in memory? I.e. could the script read up
> the tiles from disk and stream them sequentially into 1 image?
>
> Thanks in advance for some thoughts on this.
>
> Best regards,
> Bart
>
> _______________________________________________
> ka-Map-users mailing list
> ka-Map-users at lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/ka-map-users
>
>