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7

Why use a database? Because it's not necessarily the case, especially with larger datasets, that you can expect to be able to push the entire thing to the client. If you're talking thousands of points, then sure, but for millions of points you probably don't want each and every one represented in RAM on your end users' client. Not everyone has a super fast ...


6

This is not quite a fictional world, but a nice use of GIS technology nonetheless. There's a fabulous XKCD comic featuring a highly detailed illustration, which is a bit tiresome to click and drag in the tiny window provided. Florian Wesch georeferenced the whole cartoon and has provided it in a Leaflet map at http://xkcd-map.rent-a-geek.de


6

You can get Sentinel-1 data from scihub.esa. Requires only registration (And most likely, non-commercial use). As Sentinel-1 has just become operational the archive is not very extensive but should grow quite quickly. You can set request data-access propospal on Alaska Satellite Facility. Some data open access. For ALOS-PALSAR you must be a resident of the ...


6

I just checked my old National Atlas bookmark and was redirected not to the National Map Viewer, but to the National Map's Small Scale data page. There are 197 datasets available for download there, to my eyes it looks like it's the same data that was available at the old National Atlas page and they just moved it to the new URL. Are you not being forwarded ...


5

Only managed to find a couple of sources for SAR images and data: You can download SAR images from here which are mostly focused on ecological sites such as forests: You can download SAR samples from here which contain fairly large datasets (note: the last 4 links at the bottom of the SAR section are dead) Hope this helps.


5

I found a way using purely Python to get the coordinates for tweets using a word filter. It doesn't seem like many people include location with their tweets. This might not be what you're after either because this is live streaming data. You can test it by putting a unique filter word and then tweeting that word from your Twitter account. You will see your ...


4

There is an interactive Google Maps of Middle Earth. Talked about in this article http://geoawesomeness.com/middle-earth-digital-elevation-model-mapping-lord-rings/ Then here's the interactive map http://middle-earth.thehobbit.com/map Music included. It looks like you can download the DEM for Middle Earth here ...


4

You can download hydrology shapefiles from here for a number of countries around the world. Select your country of choice and Inland water as your subject. You should receive 2 types of shapefiles: A line shapefile depicting line features for rivers, canals and basins A polygon shapefile depicting area features for rivers, canals and basins I believe ...


3

I have made hydrologically correct river-channels for the Lake Victoria basin. SRTM 90m does a reasonable but imperfect job. For example, I had to adjust numerous regions based on the actual flow of rivers. All is not lost though it sounds as though we can expect the 30m global dataset soon. I would suggest a dry run with 90 m data and then a rerun when the ...


3

If you are only interested in the attribute table, you can use the Summary Statistics tool, where 'Statistics Fields' = fields to sum, 'Statistics Type' = SUM, and 'Case Field' = ID.


3

Ordnance Survey As the name suggests, OS Terrain 50 is a product with a 50 metre grid resolution (http://www.ordnancesurvey.co.uk/business-and-government/products/terrain-50.html). OS Terrain 50 has been compared with GPS points in a range of sample areas to provide a Route Mean Square Error (RMSE) value for the height points in each geographic ...


3

Thankfully, the Internet Archive has archived this data, and offers it for download. All the different versions are tagged with the geoplanet keyword. The latest version available is 7.10.0 and can be downloaded from this page.


3

May I suggest the Census Bureau as one of the options? You can access ftp sites of the available shapefiles in any of three ftp sites: ftp://ftp.census.gov/geo/ http://www2.census.gov/geo/ ftp://ftp2.census.gov/geo/


3

Two other US government sites I use that provide similar (and in some cases duplicate I believe) datasets as those found on the National Atlas are: USGS Earth Explorer: http://earthexplorer.usgs.gov/ USDA Geospatial Data Gateway: http://datagateway.nrcs.usda.gov/


2

Update: The Geocommunities store has the CLU for the whole US: http://store.geocomm.com/viewproduct.phtml?catid=25&productid=2188 It lacks some of the original redacted attributes, but it's better than nothing.


2

Start by considering synonyms for what you're calling "colloquial area", other than district or ward: neighborhood, region, zone, etc. See if there are already maps of such areas. Real estate agents often divide cities up into well-known but unofficial areas because they wish to group properties roughly according to market value and accepted colloquial ...


2

DIVA GIS will give you roads and municipalities (and I think departments). OSM will give you roads, municipalities and some POIs (and I think departments). Natural Earth will give you municipalities and roads (and I think departments). GeoCommunity will give you roads, municipalities and places (and I think departments). GeoNames will give you places.


2

For viewing bus routes you can take a look at OSM-based maps which visualize bus routes. The OSM wiki has a list of public transport maps, for example the transport layer at the front page or the Öpnvkarte. For retrieving bus route data you can use the Overpass API or the nice frontend overpass turbo. Use this query for retrieving all bus routes in the ...


2

You can use the Dissolve tool. You choose the dissolve field (ID) and then SUM for the statistics.


2

JAXA have made global L-band SAR mosaics at 50 m spatial resolution available from the PALSAR sensor: http://www.eorc.jaxa.jp/ALOS/en/palsar_fnf/fnf_index.htm Registration is required to download the data.


2

You can download administrative shapefiles from here. Simply select Russia as your Country and Administrative areas as your Subject. You will receive 3 shapefiles of differing administrative levels so you can choose what level you would like. Here is are some attributes for the lowest level: Hope this helps.


2

The only area in the US I could find is based in California by the Healthcare Workforce Development Division (HWDD). They collect GIS data in terms of: Medical Service Study Areas Health Professional Shortage Areas Medically Underserved Areas / Medically Underserved Population And other miscellaneous data The site contains shapefiles, PDF maps and Excel ...


2

The Census Bureau provides this type of information. However, the amount of specificity you are asking about is more than what they are willing to provide (for privacy reasons). The closest table is B27015 which covers general insurance status by household income category at the Census Tract level. Oh, and for reference, the Census Tract level is the lowest ...


2

As PolyGo and Brad noted, StackExchange does not host data itself. For a global dataset of inland waterways, SRTM may be the best source readily available. Have you looked at a description of the data. It is actually quite good resolution considering the extent. If you are interested in coastlines and will be working at various scales I also recommend ...


1

Right click the field and choose "Summarize" then choose your field and the method by which to summarize that field. Sum is what you are looking for.


1

You can try finding a station on Wunderground that fits your needs and then use their API to get what you want.


1

These pages on the OSM Wiki will help you determine the necessary tags for the data you need: Bus Stop, Stations, etc Bus Routes You can see what actual data is available in your area of interest by using the OSM Overpass Turbo Tool. Use the Wizard to create a subset of the available data using the tags described above


1

OpenData BoundaryLine (Ordnance Survey) ONS Postcode Directory (ONSPD) May 2014 edition. This includes full UK (including Northern Ireland) Code-POINT Code-Point Open (May 2014) This is a mirror that is updated yearly (or better) http://parlvid.mysociety.org/os/ Using all three you can build up a postcode to at best a district and a ward (We have done ...


1

Neighbourhood names are tricky, one possible source is the Flickr Shapefiles. You could look at Tom Taylor's work (referred to from here) but it seems not to be working today.


1

This is an interesting piece on such data for the UK. Public data in the UK is often not-public, including post codes Anyway the article provided via the link above will give you a direct link to the data you require. I'll let you decide on the morality of using wikileaks for such information.



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