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Re: gis event clustering on dev

 

Ok, that sounds very promising. Is there a software fallback for this?
geotools or something? if the user don't have postgis extension installed

-- 
Morten Olav Hansen
Senior Engineer, DHIS 2
University of Oslo
http://www.dhis2.org

On Fri, Mar 25, 2016 at 6:00 AM, Jan Henrik Øverland <
janhenrik.overland@xxxxxxxxx> wrote:

> Bjørn is the expert (and Lars catching up on PostGIS) can provide the
> details, but in general: Client side clustering (Leaflet) is a slightly
> smoother user experience and can handle about 50k points. For event data we
> need something more powerful and as Bjørn says the current server side
> cluster solution quite easily handled 1m+ points. The plan is to switch
> between those two solutions behind the scenes as applicable.
> On Mar 24, 2016 15:01, "Bjørn Sandvik" <bjorn@xxxxxxxxx> wrote:
>
>> I have tested it on 1 million events on an external PostGIS-server, and
>> it worked fine. I'll do a similar test on a DHIS 2 db instance after the
>> Easter break.
>>
>> Bjørn
>>
>> On Thu, Mar 24, 2016 at 12:43 AM, Morten Olav Hansen <morten@xxxxxxxxx>
>> wrote:
>>
>>> Very nice. Any idea on how it scales? 10000 facilities? 50000? More?
>>>
>>>
>>> On Thursday, 24 March 2016, Bob Jolliffe <bobjolliffe@xxxxxxxxx> wrote:
>>>
>>>> Looks cool.  Very intuitive.
>>>>
>>>> On 23 March 2016 at 16:45, Lars Helge Øverland <lars@xxxxxxxxx> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> we've been setting up PostGIS on /dev, meaning you can try out the new
>>>>> event clustering feature that Bjørn and Jan have been developing.
>>>>>
>>>>> 1. Go to event layer in top left corner.
>>>>>
>>>>> 2. Select "Inpatient morbidity mortality" program.
>>>>>
>>>>> 3. Select a data element, e.g. "Age in years".
>>>>>
>>>>> 4. Under periods, select e.g. Jan 2015 to December 2016.
>>>>>
>>>>> 5. Under organisation units, select e.g. Chiefdom level, and click
>>>>> update.
>>>>>
>>>>> Zoom in and out with mousewheel/touchpad to see events cluster and
>>>>> explode.
>>>>>
>>>>>
>>>>> https://play.dhis2.org/dev/dhis-web-mapping/#
>>>>>
>>>>>
>>>>> [image: Inline image 1]
>>>>>
>>>>>
>>>>>
>>>>> Favorites not yet supported.
>>>>>
>>>>> --
>>>>> Lars Helge Øverland
>>>>> Lead developer, DHIS 2
>>>>> University of Oslo
>>>>> Skype: larshelgeoverland
>>>>> http://www.dhis2.org <https://www.dhis2.org/>
>>>>>
>>>>>
>>>>> --
>>>>> Mailing list: https://launchpad.net/~dhis2-devs-core
>>>>> Post to     : dhis2-devs-core@xxxxxxxxxxxxxxxxxxx
>>>>> Unsubscribe : https://launchpad.net/~dhis2-devs-core
>>>>> More help   : https://help.launchpad.net/ListHelp
>>>>>
>>>>>
>>>>
>>>
>>> --
>>> --
>>> Morten Olav Hansen
>>> Senior Engineer, DHIS 2
>>> University of Oslo
>>> http://www.dhis2.org
>>>
>>>
>>
>>
>> --
>> Bjørn Sandvik
>> GIS developer, DHIS 2
>> University of Oslo
>> http://www.dhis2.org <https://www.dhis2.org/>
>>
>> --
>> Mailing list: https://launchpad.net/~dhis2-devs-core
>> Post to     : dhis2-devs-core@xxxxxxxxxxxxxxxxxxx
>> Unsubscribe : https://launchpad.net/~dhis2-devs-core
>> More help   : https://help.launchpad.net/ListHelp
>>
>>

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