[mapserver-users] Re: Clustering and tile clipping

[Wim Vanbelle]

Unfortunately it didn't solve the problem. I tried a lot of different
values though.

On top of that I'm also getting a lot of


[Tue Jan 17 08:50:08 2012] [warn] [client] mod_fcgid: read data timeout in
40 seconds
[Tue Jan 17 08:50:08 2012] [error] [client] Premature end of script
headers: mapserv.fcgi
In msCleanupOnSignal.
[Tue Jan 17 08:50:48 2012] [warn] [client] mod_fcgid: read data timeout in
40 seconds
[Tue Jan 17 08:50:48 2012] [error] [] Premature end of script headers:
mapserv.fcgi
In msCleanupOnSignal.

Anyone have a clue how to increase the timeout? I'm clustering 44K points.
And at lower zoomlevel (values) it is taking a long time.

Wim

On 16 January 2012 15:48, Wim Vanbelle <wimvanbelle at gmail.com> wrote:

> Hi,
>
> Thanks for  your answer, i'll give that a try immediately :).
>
> I remember I played around with it in the beginning, but currently it is
> indeed set to 0.
>
> What is an acceptable value for this? Am I to set this to the same value
> as the maxdistance in the cluster? (Being 100 in my case)
>
> Or perhaps this should be set to the size of my image representing the
> cluster, being 10 pixels?
>
> Best regards,
> Wim
>
>
>
>
> On 16 January 2012 10:55, Tamas Szekeres <szekerest at gmail.com> wrote:
>
>> Hi Wim,
>>
>> Did you try the BUFFER setting to increase the search area during the
>> cluster creation?
>> For more information see: http://mapserver.org/mapfile/cluster.html
>>
>> Best regards,
>>
>> Tamas
>>
>>
>>
>>
>> 2012/1/16 Wim Vanbelle <wimvanbelle at gmail.com>
>>
>>> Does anyone have any working examples of how they implemented clustering
>>> without the tile clipping?
>>>
>>> Thanks.
>>>
>>> On 11 January 2012 10:00, Wim Vanbelle <wimvanbelle at gmail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> I'm very happy that mapserver is now capable of server side clustering.
>>>> However I wonder if it's possible to completely get rid of the tile
>>>> clipping.
>>>>
>>>> Currently I've clustered a point layer with 44k points:
>>>>
>>>>             CLUSTER
>>>>                         MAXDISTANCE 100
>>>>                         REGION "ellipse"
>>>>
>>>>                 END
>>>>
>>>> It is displayed with a simple image:
>>>>                        STYLE
>>>>                                 SYMBOL          "small_shaded.png"
>>>>                                 SIZE            21
>>>>                                 OUTLINECOLOR    0 0 0
>>>>                         END
>>>>
>>>> However, when viewing this on google maps, the images are often clipped
>>>> at the tile edges.
>>>>
>>>> I figured that I could solve this with mapcache:
>>>>
>>>>  <tileset name="ld">
>>>>     <source>ld</source>
>>>>     <cache>disk</cache>
>>>>     <grid>g2</grid>
>>>>     <format>PNG</format>
>>>>     <metatile>2 2</metatile>
>>>>     <metabuffer>30</metabuffer>
>>>>     <expires>3600</expires>
>>>>     <auto_expire>2592000</auto_expire>
>>>>   </tileset>
>>>>
>>>> i've tried higher values for metatile and it helps a bit, but the
>>>> problem simply shifts location. Also with higher values (eg 5 5 metatile)
>>>> mapserver doesn't return the tiles on time for mapcache and I get gaps in
>>>> my results.
>>>>
>>>> Would preseeding the data help with the timeouts? Any other solutions
>>>> that I may try? The metadata parameter for tile_edge buffer only works with
>>>> labels as far as i know.
>>>>
>>>> Thanks in advance, this issue has been troubling me for some time now
>>>> :).
>>>>
>>>> Best regards,
>>>> Wim
>>>>
>>>>
>>>
>>> _______________________________________________
>>> mapserver-users mailing list
>>> mapserver-users at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>>
>>>
>>
>
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