dhis2-devs team mailing list archive

[Jason Pickering <jason.p.pickering@xxxxxxxxx>]

Maybe you can commit these to the /resources/geojson directory? They
would be quite handy for others as well perhaps.

Regards,
Jason


On Thu, Apr 8, 2010 at 2:26 PM, Knut Staring <knutst@xxxxxxxxx> wrote:
> Let me also attach geojson versions of overlay files that are needed for
> official maps - namely disputed areas and disputed boundaries.
> These files need some additional styling (beyond width and color) to render
> as required by international organizations.
>
> k
>
> On Thu, Apr 8, 2010 at 2:16 PM, Knut Staring <knutst@xxxxxxxxx> wrote:
>>
>> It's very cool to see the progress Jan and Tri are doing on the GIS
>> module, the exports to Excel is very nice, and so is the one to PDF which
>> preserves the layers. Inspired by StatPlanet which I also think we should
>> add as an output option for DHIS2),
>>  http://www.sacmeq.org/statplanet/StatPlanet.html, I am testing the GIS
>> module with world maps.
>> Unfortunately, when generating GeoJSON from shapefiles with many polygons
>> the result easily becomes very big (http://mapshaper.com/test/demo.html can
>> alleviate that), but here is a world geojson file that is only 150 kb:
>>
>> http://thematicmapping.org/data/json/internet_users_2005_choropleth_lowres.json
>> (discovered at this helpful
>> blog: http://blog.thematicmapping.org/2008/04/thematic-mapping-with-geojson.html)
>> There is a job to be done to verify this file with the ones used by WHO -
>> ISO country codes should be added, and the names of some countries need to
>> be changed. Probably some boundaries are also wrong. I will look into these
>> issues when/if people would like to use this module for more official maps,
>> in which case we also need to extend the export with ability to add a logo
>> and disclaimer and maybe a few simple layout choices.
>> Some issues:
>> - It is not allowed to use 0 for latitude or longitude, even though this
>> is the default value. Any reason to not allow that?
>> - For a world map one would want to select a zoom level less than 5 which
>> is currently the limit.
>> - When there is no data for a polygon, it should be rendered without fill
>> color, just boundary.
>> - The PDF export should include a legend (I think this was recently added
>> in Mapfish)
>> - When trying to export the whole world to an image, I get this message
>> (it works if I zoom in to just a few countries):
>>
>> Problem accessing /dhis-web-mapping/exportExcel.action. Reason: Form too
>> large470782>200000
>>
>> With this small file, things seem to work even in Internet Explorer, and
>> not only IE8 but even the horrible old IE6 which won't die...(I see no point
>> in going to IE5, but it would be good totest IE7 also, which I don't have
>> available right now).
>>
>> So we are definitely on the right track. I would like to set this up as a
>> demo with some global data, would be nice to be not have to require a login.
>>
>> Knut
>
>
> --
> Cheers,
> Knut Staring
>
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-- 
--
Jason P. Pickering
email: jason.p.pickering@xxxxxxxxx
tel:+260968395190