Questions tagged [data]

Any collection of related facts arranged in a particular format; often, the basic elements of information that are produced, stored, or processed by a computer.

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64 votes
8 answers
95k views

Seeking sources for US Zip Code Boundaries [closed]

What are the most up-to-date source for US Zip Code boundaries? My first thought was TIGER, whenever that comes out, but then I thought that the Postal Service might be a better bet.
59 votes
11 answers
152k views

Obtaining up-to-date list of US ZIP Codes with Latitude and Longitude Geocodes? [closed]

NOTE: This began as a question on Stack Overflow, which has subsequently been closed. I also noticed a similar question about Most Up-To-Date Source for US Zip Code Boundaries, but I believe this ...
Ben McCormack's user avatar
55 votes
14 answers
9k views

The GIS of War - Tracking Conflicts and Their Effects

I was idly speculating on the many sorts of things people are keeping track of these days with GIS - natural/human catastrophes, demographic and economic patterns, climate change, etc. In that vein, I ...
52 votes
8 answers
89k views

Seeking administrative boundaries for various countries?

After learning about the US Census's TIGERLines datasets I've working with the following layers, from the USA data Country boundaries State boundaries County boundaries City boundaries ZipCode/...
39 votes
11 answers
54k views

Seeking 2010 Census Block data

I would like to download 2010 Census Block Data for several towns and I can't seem to find it on American Factfinder. If it is not there, then where could I find it?
user573163's user avatar
35 votes
12 answers
48k views

Bulk geocoding 20 million US addresses [closed]

Are there any free or reasonably priced databases for the US which can be searched and return latitude and longitude information?
Chris Muench's user avatar
31 votes
3 answers
1k views

Map material from China not allowed to leave that country

I just read an article about a company in Germany which tests autonomous driving cars in different countries. They state that they analyze all of the generated data in Germany - with one exception: ...
TimSch's user avatar
  • 411
28 votes
18 answers
136k views

Seeking full list of ISO ALPHA-2 and ISO ALPHA-3 country codes?

I'm searching for a full list of countries with their country codes. Like on this page (need full and valid): http://www.nationsonline.org/oneworld/country_code_list.htm
Lampard's user avatar
  • 391
28 votes
5 answers
72k views

Seeking comprehensive list of latitude and longitude values for cities around world?

I'm developing an application that calculates the distance between cities using their respective Longitude and Latitude values. But the problem is where to get a comprehensive list of latitude and ...
hello's user avatar
  • 411
27 votes
5 answers
57k views

List of central coordinates (centroid) for all countries?

I need a list of the central points (centroid) for all countries: China: lat/long (coordinates of the most central point in China) France: lat/long (coordinates of the most central point in France) ...
seinecle's user avatar
  • 465
26 votes
7 answers
6k views

Are any fictional worlds available in some GIS format?

Is there any fictional world (e.g. Middle-earth, Discworld etc.) which could be used in a GIS context? For example, an MBTiles archive and a shapefile or any other format usable with OpenLayers / ...
Nikolai Prokoschenko's user avatar
24 votes
7 answers
14k views

How to download the entire ASTER GDEMv2 dataset?

In October 2011, NASA released the new ASTER GDEM global dataset (30m) and I have been wanting to get my hands on it. The only problem is that it takes forever to download and I do not feel like ...
Ragi Yaser Burhum's user avatar
24 votes
6 answers
2k views

Open access repository of general GIS spatial data?

As a newcomer to using GIS for research, I am wondering if there are online repositories for spatial data, similar to package repositories for Linux distributions. For instance, I would be able to ...
23 votes
7 answers
6k views

Alternatives to Shapefiles as open-source, cross platform dataset types [closed]

I am working on software that is very ESRI oriented, but a future version will likely not be using ESRI software. It uses Shapefiles and Geodatabases. I'm planning on getting all of my data to ...
Tanner's user avatar
  • 7,375
23 votes
4 answers
54k views

Seeking Country/State/City Database [closed]

I am creating a directory which uses locations to categorize all listings. Instead of relying on user input, I'd like to provide a list of locations which the user can select. I have already tried ...
user avatar
22 votes
10 answers
14k views

Seeking GIS data for fast food industry?

I am working a small project related to fast food industry. I am trying find GIS data for fast food chains like subway, MC Donald's, Arby's, etc in state of Ohio. Basically, I am looking for point ...
22 votes
3 answers
2k views

Where to get street data in an importable format?

I don't want to use WMS layers, but to actually store the data in my local server, where can I find street data from the world?
Vinko Vrsalovic's user avatar
22 votes
5 answers
10k views

Is there a source for historical shapefiles and tiles?

Is there a source for historical shapefiles and tiles? Like the ancient Greece/Rome, medieval Europe and Japan? Ideally with multiple snapshots during different periods in their development, since ...
22 votes
3 answers
1k views

How can we protect GIS data?

I have found a very interesting paper here related to this topic. I just want to have views/ideas from other professional about how we can protect GIS data using Cryptography or Digital Watermarking? ...
iRfAn's user avatar
  • 1,914
21 votes
9 answers
23k views

Near real-time sources of lightning strike data

I am wondering if anyone has any suggestions on sources of near real-time lightning strike data available for download? For example, Intellicast.com has a map of strikes, but makes no mention of the ...
RyanKDalton's user avatar
  • 23.1k
21 votes
3 answers
16k views

Downloadable, Open Source, IP GeoLocation database

I have an open source project. I need a similarly open source IP GeoLocation database i.e. IP address to country (and ideally city). Ideally with a license that allows redistribution. This is a ...
GIS-Jonathan's user avatar
  • 6,775
20 votes
5 answers
21k views

Finding footprint data for US buildings?

Are there any sources for free and distributable building footprint datasets for major cities around the United States? Ideally, the data would also have the number of stories of each building; is ...
Jesse Stimpson's user avatar
20 votes
5 answers
22k views

Source for high-resolution satellite images free/low-cost?

I am doing a household survey in Kenya, and I need to ensure that my survey team visits every house within a given area. I've been going to google maps and right-clicking on roofs to get coordinates ...
generic_user's user avatar
19 votes
9 answers
3k views

Finding GIS data sources for developing nations?

Not all countries have the benefit of funding/technologies for developing GIS data stores. I'm looking for a list of common GIS data sources that should be investigated when trying to build a good ...
19 votes
8 answers
101k views

Seeking Free Shapefile of European Countries?

I do not seem to be able to find a free shapefile of the European countries. This is the kind of map I am looking to populate with my own data using ESRI ArcGIS: The Eurostat website only seems to ...
Sannita's user avatar
  • 307
19 votes
7 answers
7k views

Seeking Satellite Imagery Providers? [closed]

I'm building a web application - my requirements are: Must have global satellite imagery. Must have easy to use API's that are capable of geoJSON data imports, mouse and keyboard gestures, etc. To ...
Jordan Arsenault's user avatar
19 votes
7 answers
9k views

Seeking neighborhood boundaries globally?

Besides Zillow's creative-commons licensed neighborhood boundaries shapefiles, what sources of neighborhood boundaries are there? Not just in the US, but all over the world. Free/open source is ideal,...
Avishai's user avatar
  • 993
19 votes
1 answer
137k views

Listing available online WMS services (Weather, Land Data, Place Names)?

I'm Looking for WMS services freely available to the public to overlay on my application, specifically weather and AIS information. Perhaps this is a good place to list some available online WMS ...
19 votes
5 answers
55k views

Seeking shapefile of city boundaries in US?

Where can I find a shapefile that contains boundaries for the major cities in the United States? I have tried the census website but could not find anything.
Furlong's user avatar
  • 2,115
18 votes
4 answers
35k views

List of language codes by country

Does anyone know of a list of countries with their associated official language codes? I haven't found anything by Googling yet. What I'm looking for is something like this: Country name/code ...
Alex Ciminian's user avatar
18 votes
7 answers
5k views

Sources of realtime spatial data [closed]

I'm trying to set up a demo that serves up live spatial data, but am having trouble finding any suitable example data sources. Ideally I'm looking for something that updates every few seconds; either ...
Mark Ireland's user avatar
  • 13.2k
18 votes
3 answers
2k views

What is the wire format for Google's new vector map tiles?

Google recently released new vector cartography for their mobile maps. I'm curious if anyone here has any insight into the wire format they use for transmission? I've experimented with a few formats ...
Michal Migurski's user avatar
18 votes
2 answers
4k views

How to best model GPS tracks for storage, visualization and analysis?

I am thinking about writing software to deal with GPS Tracks and Waypoints (mostly storing, displaying and calculating metrics such as speed, grade, and some simple statistics). I wonder what should ...
heltonbiker's user avatar
  • 1,237
18 votes
1 answer
1k views

Are there torrents that contain large free spatial datasets?

I've been having a lot of issues downloading entire datasets of SRTM or ASTER GDEM2 or similar free datasets, mainly because of poor services. Does anyone know of any torrents which contain such free ...
U2ros's user avatar
  • 5,117
17 votes
4 answers
28k views

Saving project with data source path as relative in QGIS?

Is there an option in QGIS to save the project with the data source being a relative path? I don't see the option here. QGIS Wroclaw1.7.3
SNT's user avatar
  • 3,379
17 votes
7 answers
5k views

What iOS (iPhone/iPad) app from the App Store can I use to collect data?

What iOS app from the iTunes App Store can I use to collect data (mainly points, perhaps photos) and later import them into my GIS? I am mainly interested in an out-of-the-box solution, not develop ...
Ragi Yaser Burhum's user avatar
16 votes
5 answers
33k views

Finding ways to get free radar (SAR) satellite imagery data sets [closed]

I am looking for finding ways to obtain free (non-commercial use) sources of synthetic aperture radar (SAR) satellite imagery. Does anyone know of sources?
SysRq308's user avatar
  • 405
16 votes
2 answers
60k views

Free tile provider for Leaflet

I'm using Leaflet for the maps of my website. So far I was using maps of Mapbox (they're cool), but they obviously charge for them for website with 100,000+ maps per month. I'm trying to find a ...
Hookstark's user avatar
  • 341
16 votes
4 answers
917 views

How to handle TIME in GIS?

Is there any way or any idea on how to handle Time attribute in GIS? For example, which are the ways to specify that an object is at a place at a given time interval and them it is in another place ...
Pablo's user avatar
  • 9,827
16 votes
4 answers
12k views

Is there a public shapefile with the London Underground stations and lines?

Is there a public shapefile containing the stations and lines of the London Underground? I've been doing some intensive searching but I can only find the coordinates of the stations, or the lines in ...
Robin Hawkes's user avatar
  • 1,035
16 votes
4 answers
23k views

Spatial data? Geodata? Geographic Data? Geospatial data? [closed]

What word indicates spatial data within the geographical and geological domains? In particular, what word is precise enough for a science journal article (i.e., formal prose)? Candidates might include ...
16 votes
8 answers
681 views

Are there sources for more esoteric data than streets worldwide?

Related to this question. For example, things like: political world map (as polygons) cities of the world geolocated climate data (avg temp, humidity, rain, as polygons), earthquakes, hurricanes (as ...
16 votes
9 answers
11k views

Seeking Sentinel 2 Images for Nigeria [closed]

I need Sentinel 2 imagery of Nigeria, I signed up in Copernicus Scihub but typing Nigeria into the text box no results appear. I must be doing something wrong, how can be possible that they do not ...
Lollo's user avatar
  • 531
16 votes
5 answers
4k views

Seeking world map with boundaries of regions and communities for commercial use?

I am looking for a vector file worldmap which should include as many boundaries reaching to a very small level (like ZIP-Codes/small communities/etc) as possible. The data of Natural Earth is quite ...
Gideon's user avatar
  • 1,120
16 votes
2 answers
4k views

Retrieving Wikipedia's coordinate information?

I'd like to add icons to my map showing locations which have Wikipedia entries. The WikiLocation API is a great resource for determining Wiki entries near an XY location, but it has limitations (20km ...
Stephen Lead's user avatar
  • 21.1k
16 votes
2 answers
4k views

Storing and managing spatial data? [duplicate]

I have always been curious how other folks are storing their spatial data. Outside of an enterprise environment where much data is stored in enterprise geodatabases, is it better to store data per ...
Sue Deforest's user avatar
15 votes
5 answers
34k views

Seeking free elevation data for Europe?

Where can I find free elevation data for Europe? The available resolutions and terms of use are important details that I also seek.
15 votes
9 answers
2k views

Seeking temporal Landsat imagery

It's been a while since I've dealt with optical imagery. I need to perform a land cover classification at mid-latitudes using several LANDSAT scenes. I've noticed that some online tools are still ...
Radar's user avatar
  • 10.7k
15 votes
7 answers
51k views

Source for GeoJSON data for the US

Does anyone know of any good sources for US data (counties, congressional districts, etc) in GeoJSON format? Has anyone converted public-domain shapefiles/sources to GeoJSON that they would be willing ...
Casey's user avatar
  • 2,040
15 votes
6 answers
11k views

Seeking China data? [closed]

I'm looking for good free online sources of vector (shapefiles of cities, provinces, terrain etc) and raster data on China. Are there any open repositories of this type of data?
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