dhis2-devs-core team mailing list archive

[Lars Helge Øverland <lars@xxxxxxxxx>]

On Mon, Mar 28, 2016 at 11:10 AM, Abyot Asalefew Gizaw <abyot@xxxxxxxxx>
wrote:

> a nice feature.
>
> how does the clustering happen - does it follow org unit levels? If so can
> we display the polygons at the background so that it gives an overview as
> to where the happening is.
>
>
Sure. The event is linked to org unit, and when you make the selection in
GIS, you specify which org unit. But there is no guarantee that the
coordinate of an event linked a facility is within the district of the
facility, etc. One can use the "boundary layer" to outline the borders of
districts, provinces in combination with the event layer.


> --
> Abyot A. Gizaw.
> Senior Engineer, DHIS2
> University of Oslo
> http://www.dhis2.org
>
> On Mon, Mar 28, 2016 at 10:39 AM, Lars Helge Øverland <lars@xxxxxxxxx>
> wrote:
>
>> No fallback on server, if you want this one must install PostGIS.
>> Clustering is so far for events, org units will come in next release.
>> Clustering happens as part of analytics in the database so scalability is
>> roughly equal to the general analytics features.
>>
>>
>>
>> On Mon, Mar 28, 2016 at 5:19 AM, Morten Olav Hansen <morten@xxxxxxxxx>
>> wrote:
>>
>>> 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
>>>>>
>>>>>
>>>
>>
>>
>> --
>> 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
>>
>>
>


-- 
Lars Helge Øverland
Lead developer, DHIS 2
University of Oslo
Skype: larshelgeoverland
http://www.dhis2.org <https://www.dhis2.org/>