[fusion-users] Fusion + MapServer + TileCache
Nolte, Tim
Tim.Nolte at ipcswirelessinc.com
Thu Dec 17 11:11:19 EST 2009
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
>
>
>
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> 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
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