incorporate coastal line into GeoJSON polygons

gazetteerhk / census_explorer

Explore Hong Kong's neighborhoods through visualizations of census data

http://gazetteer.hk

MIT License

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incorporate coastal line into GeoJSON polygons #24

Closed hupili closed 10 years ago

hupili commented 10 years ago

sea regions are also coloured at present. Use coastal lines.

hupili commented 10 years ago

Like The project mentioned in #15

hxu commented 10 years ago

Agreed that this would be good to have. I found coastlines here, but they don't seem to match to our shapefiles. Maybe something wrong with the projection, so I can take another look.

Cedric writes here that the coastal shapefiles are on the Census CD-ROM, if we want to try and go that route.

hupili commented 10 years ago

I'm on it. I need to read the license before sharing. Also the CD mentioned in #15 .

hupili commented 10 years ago

I can not find license of the map data. We may stick to fair use convention. I can not upload the whole disc. A selected set of relevant shape files are in Google Share Dir:

coast : from the disc
dc/dcca : before coast clipping, from disc
dc_land: cd clipped by coast from the disc
dcca_land: I use coast to clip dcca

@hxu or @2blam You may try to integrate it.

hxu commented 10 years ago

thx @hupili, I've integrated this in frontend.

hxu commented 10 years ago

I found that the new Constituency Area file has only 390 areas, as opposed to 412. @hupili the data is from the 2001 Census, right? I'm guessing this is because some areas were subdivided as populations grew.

The District Council set should still be OK, but I am going to combine the coastal shapefile with the 2011 CA shapefiles so that we have all 412.

hupili commented 10 years ago

Yes, that's from 2001. Maybe we only use the coastal shape file from 2011 and produce the land-only versions ourselves.

hxu commented 10 years ago

Fixed in 08f2d4709c546