[mapserver-users] Precache

Varun saraf vsaraf.gmu at gmail.com
Sun Jun 21 07:32:18 PDT 2009 

It worked perfect.I have another question but I guess I will put it up
on the tilecache-users list.

Thanks a lot,
Varun

On Fri, Jun 19, 2009 at 6:55 PM, Guillaume
Sueur<no-reply at neogeo-online.net> wrote:
> Hi Varun,
>
> It looks rather like a question for the tilecache-users list, but I can give
> you a hand.
> I think you didn't specify any layer when running tilecache_seed.py
> Please try :
> tilecache_seed.py [your_layer_name_as_set_in_tilecache.cfg] 0 5
> where 0 and 5 are zoom start and zoom end. You can adapt this last one
> depending on how many levels you set for your layer.
> Run it from the directory where tilecache.cfg is, to avoid problem if you
> have many of them...
>
> Regards,
>
> Guillaume
>
> Varun saraf a écrit :
>>
>> Hello,
>>
>> I have got this (tilecache with mapserver on google maps) working
>> finally after a lot of problems but I now really need to know about
>> how to do a pre-cache of all the tiles from mapserver. I am running
>> tilecache 2.10 on Windows with mapserver ms4w from maptools.org. I
>> tried running "tilecache_seed.py" as per the suggestion above but it
>> always ends up in the following error
>>
>> Traceback (most recent call last):
>>  File "C:\ms4w\Apache\cgi-bin\tilecache-2.10\tilecache_seed.py", line 9,
>> in <mo
>> dule>
>>    TileCache.Client.main()
>>  File "C:\ms4w\Apache\cgi-bin\tilecache-2.10\TileCache\Client.py", line
>> 153, in
>>  main
>>    layer = svc.layers[args[0]]
>> IndexError: list index out of range
>>
>> Any help in this regard would be great.
>>
>> Thanks,
>> Varun
>>
>> On Fri, Jun 19, 2009 at 2:39 PM, Varun saraf<vsaraf.gmu at gmail.com> wrote:
>>>
>>> Hi Roger,
>>>
>>> I am trying to get my mapserver and tilecache work together but its
>>> somehow not working. I am using the same projection as you in all my
>>> layers and the mapfile. (This works when I call my mapserver directly
>>> from google and hence the projection is right).
>>>
>>> Here is my mapfile (Only things that might be important).
>>>
>>> MAP
>>>   EXTENT -173 5 -45 75
>>>
>>>   IMAGETYPE PNG
>>>
>>>   PROJECTION
>>>     "init=epsg:4326"
>>>   END
>>>
>>>   WEB
>>>   METADATA
>>>    wms_srs             "EPSG:4326 EPSG:900913"
>>>   END
>>> ....
>>>   END
>>>
>>>   LAYER
>>> ....
>>>       PROJECTION
>>>           "init=epsg:4326"
>>>       END
>>>   END
>>>
>>> Next I added the 900913 epsg to the proj.4 of mapserver and made the
>>> required changes in tilecache.cfg file as you specified.
>>>
>>> [google-tiles]
>>> type=MapServerLayer
>>> mapfile=C:/ms4w/apps/QCTGIS/drawMap.map
>>> metaTile=true
>>> metaSize=2,2
>>> metaBuffer=0,500
>>> layers=tr20_d00
>>> spherical_mercator=true
>>> srs=EPSG:900913
>>>
>>> I am not sure if the linkn I am using is wrong. I have tilecache
>>> installed in the cgi directory of the apache server that was installed
>>> using "ms4". The example index.html that comes with tilecache works
>>> fine and I can see the images being cached. Also my mapserver directly
>>> works fine. Can you tell me what is it that I am doing wrong here? the
>>> link I use for the tileUrlTemplate in google maps is
>>>
>>> "http://127.0.0.1:8123/cgi-bin/tilecache-2.10/tilecache.cgi/1.0.0/google-tiles/{Y}/{X}/{Z}.png?type=google".
>>> I can also see that this call gets initiated in the apache logs
>>> (access.log) but nothing happens therafter. I don't even know if this
>>> is failing at tilecache end and mapserver isn't being called at all or
>>> at mapserver's end where the image is not being sent by mapserver. Can
>>> you help me out here?
>>>
>>> Thanks a lot.
>>> Varun
>>>
>>> On Thu, May 21, 2009 at 12:46 PM, Roger André<randre at gmail.com> wrote:
>>>>
>>>> Ahh, ok.  I'm not sure in what fashion you are using TileCache, but my
>>>> experience has been with using it to create tiles to display in Google
>>>> Maps.  Google Maps uses the projection which is EPSG:900913.  I
>>>> believe there are other codes for it, but that is the one I use.
>>>>
>>>> All of my source data for the MapServer projects I make are in
>>>> EPSG:4326.  So there are 3 things I need to do in order to make the
>>>> Tilecache output tiles align correctly in Gmaps.
>>>>
>>>> 1. I set both the mapfile and the layer projections to EPSG:4326.
>>>> MAP
>>>>  NAME  'v2_80m_global'
>>>>  PROJECTION
>>>>   "init=epsg:4326"
>>>>  END
>>>>
>>>>  LAYER
>>>>   NAME 'imagery'
>>>>   PROJECTION
>>>>     "init=epsg:4326"
>>>>   END
>>>> <snip...>
>>>>
>>>> 2. I explicity allow for a wms request to be made for the layer in
>>>> EPSG:900913 by setting the following in my MapServer LAYER:
>>>>   METADATA
>>>>     "wms_srs"             "EPSG:4326 EPSG:900913"
>>>> <snip...>
>>>>
>>>> 3. I define my TileCache layer so that it requests images from
>>>> Mapserver in EPSG:900913.
>>>> [v2_20m_global]
>>>> type=MapServerLayer
>>>> mapfile=/var/www/mapfiles/v2_20m_global/v2_20m_global.map
>>>> metaTile=true
>>>> metaSize=2,2
>>>> metaBuffer=0,500
>>>> layers=imagery
>>>> spherical_mercator=true
>>>> srs=EPSG:900913
>>>>
>>>> That's what works for me.
>>>>
>>>> Roger
>>>> --
>>>>
>>>> On Thu, May 21, 2009 at 5:24 AM, Chad Clabaugh <cclabaugh at centwire.com>
>>>> wrote:
>>>>>
>>>>> Thank you Roger, for your response.  I have done that but I do not
>>>>> understand how tilecache works.  The images that are returned from
>>>>> mapserver
>>>>> line up perfectly. But the images returned from tilecache do not align
>>>>> very
>>>>> well (they're distorted).  If tilecache is simply caching the returned
>>>>> images then I do not understand where this distortion comes from.  Any
>>>>> thoughts?
>>>>>
>>>>> Thanks!
>>>>>
>>>>> -----Original Message-----
>>>>> From: Roger André [mailto:randre at gmail.com]
>>>>> Sent: Wednesday, May 20, 2009 11:46 PM
>>>>> To: Chad Clabaugh
>>>>> Cc: mapserver-users at lists.osgeo.org
>>>>> Subject: Re: [mapserver-users] Precache
>>>>>
>>>>> Your request is somewhat lacking in detail, but assuming that your
>>>>> goal is a simple one, here is one way to accomplish this.
>>>>>
>>>>> 1. Create a MapServer project that displays your shapefile in whatever
>>>>> style you choose.
>>>>> 2. Setup a TileCache instance that points to your MapServer project.
>>>>> 3. Run the tilecache_seed.py script to pre-generate tiles.
>>>>>
>>>>> Roger
>>>>> --
>>>>>
>>>>> On Wed, May 20, 2009 at 12:16 PM, Chad Clabaugh
>>>>> <cclabaugh at centwire.com>
>>>>> wrote:
>>>>>>
>>>>>> How can I precache tile images from shapefiles?
>>>>>>
>>>>>>
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>>
>>>>>>
>>>>>> Chad Clabaugh
>>>>>>
>>>>>> Technical Support, Engineering
>>>>>>
>>>>>> Office: 260.760.6398
>>>>>>
>>>>>> Mobile: 260.466.8861
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> mapserver-users mailing list
>>>>>> mapserver-users at lists.osgeo.org
>>>>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>> _______________________________________________
>>>> mapserver-users mailing list
>>>> mapserver-users at lists.osgeo.org
>>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>>>
>> _______________________________________________
>> mapserver-users mailing list
>> mapserver-users at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>
>>
>

More information about the MapServer-users mailing list