[fusion-users] Fusion + MapServer + TileCache
Paul Deschamps
pdeschamps at dmsolutions.ca
Thu Dec 17 13:25:03 EST 2009
Wow, I'd like to set some metrics on that experience, It just doesn't make
sense to me that 11 map draws is quicker then one, good to know though.
As for the tilecache layer, you can combine layers in your tilecache.cfg
file forexample:
[basic]
type=WMS
url=http://labs.metacarta.com/wms/vmap0
extension=png
[mapserver_example]
type=MapServer
layers=countries,borders,poulated_places
mapfile=/var/www/myMap.map
[wcs-wms]
type=WMS
url=http://atlas.2c1forest.org/cgi-bin/ms_wms
extension=png
layers=diff_scenario1,ten_km2_hexagon_planning_units_transition
This means that the tilecache layer "wcs-wms" is a wms request of two layers
combined. The same goes for the mapserver example.
As for the base layer I do not think it is a requirement, however one map
may need to be considered as a baselayer.
and yes you would also create a separate map block for each request to a
tilecache layer.
Hope this helps
Paul D.
On Thu, Dec 17, 2009 at 11:11 AM, Nolte, Tim
<Tim.Nolte at ipcswirelessinc.com>wrote:
> Paul,
>
> Actually, the way I used to do things was to use just 1 map file, but
> this actually caused a performance problem. What I get by having 11 map
> images being drawn is a faster end user experience. If an end user
> decides to turn off a layer in one of the other maps then the entire map
> doesn't have to redraw with every change. Also the end user actually
> sees the web client doing something and not just waiting for a single
> map image to generate. I could probably combine the maps down a bit, but
> because the "propagations" layers were so time consuming to build they
> always had significant impact on the entire map generation. Also, some
> of my layers are Oracle Spatial layers which I've been able to separate
> out and keep those costly connections for slowing the entire map
> generation process.
>
> Now here's my question concerning the implementation of the TileCache
> layer. Is it required that it be a Base Layer? Would it function
> properly in light of my AppDef by swapping out my 'propagations' map
> with a TileCache map? Does the TileCache map only provide a single
> 'layer'? Would I have to build a separate "Map" for each layer I have
> defined in my 'propagations' mapfile? Thanks!
>
> - Tim
>
>
> -----Original Message-----
> From: pdescham49 at gmail.com [mailto:pdescham49 at gmail.com] On Behalf Of
> Paul Deschamps
> Sent: Thursday, December 17, 2009 10:48 AM
> To: Paul Spencer
> Cc: Nolte, Tim; fusion-users at lists.osgeo.org
> Subject: Re: [fusion-users] Fusion + MapServer + TileCache
>
> Hi Tim.
>
> I've setup a tilecache using the default "basic" layer as a test, our
> appdef is as follows:
>
> <MapSet xsi:type="MapSetType">
> <MapGroup id="mixed" xsi:type="MapType">
> <Map xsi:type="WMSLayerType">
> <Type>WMS</Type>
> <Extension>
>
> <ResourceId>http://192.168.2.105/cgi-bin/tilecache.cgi</ResourceId>
> <Options>
> <name>test tilecache WMS</name>
> <isBaseLayer>true</isBaseLayer>
> <singleTile>false</singleTile>
> </Options>
> <Parameters>
> <layers>basic</layers>
> <transparent>true</transparent>
> </Parameters>
> </Extension>
> </Map>
> </MapGroup>
> </MapSet>
>
> <MapWidget xsi:type="WidgetType">
> <Name>Map</Name>
> <Type>Map</Type>
> <StatusText>The map.</StatusText>
> <Extension xsi:type="CustomContentType">
> <MenuContainer>MapContextMenu</MenuContainer>
> <FractionalZoom>false</FractionalZoom>
> </Extension>
> <MapId>mixed</MapId>
> </MapWidget>
>
> Initially mike and I noticed that the tilecache requests were not using
> the correct scale. Mike later found that the issue was that the map was
> using a "fractional zoom" and once we added
> "<FractionalZoom>false</FractionalZoom>" to the map widget it worked
> perfectly. Perhaps we should have a bug for this and check to see if the
> map has <singleTile>false</singleTile> then automatically set fractional
> zoom to false.
>
> Now looking at your AppDef. I can see why you are looking at tilecache.
> I bet thats expensive to have fusion load 11 map files. Is there not any
> way you can have one map file with layer grouping? that would save you a
> ton of bandwidth and would improve map draw speed having only 1 request
> instead of 11.
>
> Remember though it is really only good to use tilecache on layers that
> do not change. Any dynamic data means the you'll have to clear the cache
> at the same interval that the data is updated.
>
> Cheers
>
> Paul.
>
>
>
>
>
>
>
> On Wed, Dec 16, 2009 at 1:27 PM, Paul Spencer <pspencer at dmsolutions.ca>
> wrote:
>
>
> okay Tim. I'm keen for us to make sure this works, so if you
> run into trouble please let us know.
>
> Cheers
>
> Paul
>
>
> On 2009-12-16, at 12:02 PM, Nolte, Tim wrote:
>
> > I haven't even begun looking into it other than posing the
> question to the list. I wanted to know if anyone had issues or get a
> sense of what the limitations were/are without spending a lot of time to
> find that I wouldn't be able to accomplish what I was looking to do. I
> just sent an email with my AppDef and what I'm looking to accomplish.
> >
> > - Tim
> >
> > ----
> > Timothy J Nolte - tnolte at ilpcs.com
> > Network Planning Engineer
> >
> > Sprint Nextel
> > 4717 Broadmoor Ave, Suite G
> > Kentwood, MI 49512
> >
> > Office: 616-656-5163
> > PCS: 616-706-2438
> > Support: 616-929-0289
> > Fax: 616-554-6484
> >
> >
> > -----Original Message-----
> > From: pdescham49 at gmail.com [mailto:pdescham49 at gmail.com] On
> Behalf Of Paul Deschamps
> > Sent: Wednesday, December 16, 2009 11:58 AM
> > To: Nolte, Tim
> > Cc: fusion-users at lists.osgeo.org
> > Subject: Re: [fusion-users] Fusion + MapServer + TileCache
> >
> > Hi Tim.
> >
> > I personally have not yet written an application that uses
> tile cache, though I am told it does work. I am going to spend some time
> today with fusion trunk and see what i need to do to get it up and
> running. I'll pass along my findings to the list.
> >
> > Have you had any successes with this thus far?
> >
> > Paul D.
> >
> >
> >
> >
> > On Wed, Dec 16, 2009 at 11:23 AM, Nolte, Tim
> <Tim.Nolte at ipcswirelessinc.com> wrote:
> >
> >
> > Has anyone successfully used TileCache with Fusion,
> along with MapServer?
> >
> > - Tim
> >
> > ----
> > Timothy J Nolte - tnolte at ilpcs.com
> > Network Planning Engineer
> >
> > Sprint Nextel
> > 4717 Broadmoor Ave, Suite G
> > Kentwood, MI 49512
> >
> > Office: 616-656-5163
> > PCS: 616-706-2438
> > Support: 616-929-0289
> > Fax: 616-554-6484
> >
> > _______________________________________________
> > fusion-users mailing list
> > fusion-users at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/fusion-users
> >
> >
> >
> >
> >
> >
> > --
> > Paul Deschamps
> > Applications Specialist
> > DM Solutions Group Inc.
> >
> > Office: (613) 565-5056 x28
> > pdeschamps at dmsolutions.ca
> > http://www.dmsolutions.ca
> > http://research.dmsolutions.ca
> >
> >
> >
> > _______________________________________________
> > fusion-users mailing list
> > fusion-users at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/fusion-users
>
>
> __________________________________________
>
>
> Paul Spencer
> Chief Technology Officer
> DM Solutions Group Inc
> http://research.dmsolutions.ca/
>
>
>
>
>
>
> --
> Paul Deschamps
> Applications Specialist
> DM Solutions Group Inc.
>
> Office: (613) 565-5056 x28
> pdeschamps at dmsolutions.ca
> http://www.dmsolutions.ca
> http://research.dmsolutions.ca
>
>
>
>
--
Paul Deschamps
Applications Specialist
DM Solutions Group Inc.
Office: (613) 565-5056 x28
pdeschamps at dmsolutions.ca
http://www.dmsolutions.ca
http://research.dmsolutions.ca
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/fusion-users/attachments/20091217/3dc2a5bd/attachment.html
More information about the fusion-users
mailing list