Open Data Stack Exchange
Open Data Stack Exchange

Most Popular

more tags
1500 questions
25
votes
2 answers

Get Wikipedia URLs (sitelinks) in Wikidata SPARQL query

I can use the following query to list all sovereign states via the Wikidata query interface: PREFIX wikibase: PREFIX wd: PREFIX wdt: SELECT ?cid…
ramiro
  • 1,046
  • 1
  • 9
  • 12
25
votes
5 answers

How to normalize the data when mapping crime reports?

Most maps using count of reports of crime end up being maps of the population density of cities. An attractive response would be to turn these counts into a rate, but a rate per what? Most commonly, people seem to divide the counts by the population…
fgregg
  • 5,108
  • 16
  • 37
25
votes
8 answers

Free icons of country flags, reusable in both open source and commercial products

I need icons for the flags of countries. PNG file format Small sizes such as 32x32 pixels or similar. Consistent size for all flags (even the flags with strange shapes like Nepal, they have to be fit in). Similar to the official flag, not too much…
Nicolas Raoul
  • 8,426
  • 5
  • 28
  • 61
25
votes
3 answers

Historical Weather Forecasts

Does anybody know if there is a place I can find historical data of weather forecasts by forecaster? I'm mainly interested in forecasts of high temperature and low temperature, but precipitation forecasts would be great as well. To clarify, I am…
Eric
  • 353
  • 1
  • 3
  • 8
25
votes
15 answers

COVID19 - Coronavirus case data (country summary data)

There are some very good sites showing the state of infections 'now', but I would like to find a data set of COVID-19 infections, deaths and number of tests by day and by country. These are the best I can find, but it doesn't quite meet what I'm…
Marcus D
  • 1,119
  • 1
  • 9
  • 26
25
votes
8 answers

Tools for merging similar datasets continuously

How do I merge similar datasets, not just once but on an ongoing basis? This seems like a reasonably common problem so I'd be interested if there is a tool out there aimed at this problem, as a guided workflow. Or if any general purpose data tools…
D Read
  • 2,361
  • 2
  • 16
  • 22
24
votes
10 answers

Wikipedia table to JSON (or other machine-readable format)

I'm interested in the data listed in the tables listed here. Is there a good way to extract the information (as JSON, preferably) without resorting to HTML parsing?
user94154
  • 491
  • 1
  • 3
  • 8
24
votes
9 answers

Is there an open API for world terrain data?

I'm looking for open-source or publicly-available terrain data, for instance heightmaps or DEMs -- ideally GeoTIFFS by way of an easy-to-use API. For instance: you pass a pair of lat/longs and maybe a resolution, and are returned an image, possibly…
meetar
  • 584
  • 6
  • 13
23
votes
12 answers

Graph visualization/analysis tool?

Since the Harvard Business Review claimed that Data Scientist is The Sexiest Job of the 21st Century, graph analysis and big data are becoming very popular topics at my university. I'm familiar with graphs algorithms, but we usually program our own…
RSFalcon7
  • 933
  • 7
  • 23
23
votes
7 answers

Any CDR (call data record) dataset?

I would like to do some analytics on CDR data, preferably mobile, but anything will do. Ideally I would like to have between 100MB to 10GB of data. I have been trying to look for this type of data on the web, so far with no luck. Apparently a…
Enzo
  • 541
  • 1
  • 4
  • 7
23
votes
9 answers

Free database of vehicle data and images

I've been looking for a free database of vehicle manufacturer's specifications, data, and images for a long time with no luck, does anyone have any ideas?
user2109
  • 231
  • 1
  • 2
  • 4
22
votes
3 answers

Is there an open database of elementary, middle, and high schools in the United States?

Is there an up-to-date and regularly maintained open database of elementary, middle, and high schools in the United States? I'm looking for both public and private schools. Names alone would be a good start, but of course addresses (at least a state…
Andrew Cheong
  • 437
  • 1
  • 4
  • 12
22
votes
6 answers

Mapping counties to zip codes

Is there any freely available data that relates USA zip codes and USA counties (FIPS County codes)? Since counties can contain multiple zip codes, one can have multiple entries, in such a table: FIPS_code, county_name, zip_code 36001, Albany…
Amelio Vazquez-Reina
  • 325
  • 1
  • 2
  • 7
22
votes
3 answers

What does CKAN stand for and what does it do?

I have seen this acronym a lot on this website, but I don't know what it means! The main header of CKAN.org claims, "the world’s leading open-source data portal platform". What is a data portal platform? What operating systems does CKAN support? Is…
CaesiumFarmer
  • 2,088
  • 1
  • 14
  • 26
22
votes
8 answers

Database with monthly climate/weather data by country

I am searching for an online database for climate data (especially temperature) for non-European countries on a monthly basis. 1990-2014 would be nice.
Daniel Ryback
  • 381
  • 1
  • 2
  • 6
1 2
3
…
99 100