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14
votes
4answers
5k views

Where to download free elevation data for Europe?

Where can I find free elevation data for Europe? Please mention the available resolutions and terms of use when posting a source.
14
votes
4answers
376 views

Which data formats are best for Open Data distribution?

What are the pros and cons of different data formats (performance, file size, etc.) when considering open data distribution? Our organisation wants to publish data as open data. However, there is no ...
9
votes
2answers
3k views

Derive WGS84 Longitude & Latitude from British Northings & Eastings

I'm looking for a fairly simple way to append columns with WGS84 longitude and latitude to a table containing northings and eastings. The source data is Ordnance Survey's CodePoint Open, which I is ...
6
votes
5answers
2k views

Problem loading OS OpenData multipoint shapefile into PostGIS

I am trying to load the OS OpenData Strategi shapefile dataset into a PostGIS database. I have had no problems with the polyline and polygon shapefiles, but I am unable to get the point shapefiles to ...
5
votes
3answers
2k views

Open source database of world locations [duplicate]

Possible Duplicate: Comprehensive list of Latitude and Longitude values of cities round the world i would like to know if is out there any downloadable database of world locations, i know ...
5
votes
3answers
174 views

Missing Scottish Administrative Data in OS Opendata sets

I'm not sure if this forum is really the correct place to ask, but impertinence would lead me to believe that there may be some one on here that may know the answer. I'm using the Ordnance Survey Open ...
4
votes
1answer
44 views

European road usage statistics per highway

I'm looking for an open data source which features the amount of cars per road per day or per year for Europe(!). I've found several national reports, which are only available as PDF and as such a not ...
3
votes
5answers
2k views

Ways to load OS VectorMap data

Us lucky fellows in the UK have been able to access public geodata from Ordance Survey under an open licence since April this year. Some of the datasets, including VectorMap, are broken into 100 ...
3
votes
3answers
197 views

Comparison of open data portal solutions

For many organizations, such as local/county/state governments, providing public access to GIS data is a challenge. Simply knowing what data is available, what it is, who owns and maintains it, and ...
3
votes
2answers
960 views

Using openlayers to render UK National Grid maps

Is there a way I can use Openlayers with a 1 pixel = 1m/2m/4m OS Grid map at high resolutions (i.e. OS Street View), but switching to a Mercator projection when you zoom out (i.e. for Google Maps or ...
2
votes
3answers
265 views

coordinate definitions from nyc.gov open data SpatialLocation field

The NYC Open Data website has a dataset of street events. The last column is called SpatialLocation, and is defined as a text field. An example is below. It is clearly two points on a physical map. ...
2
votes
2answers
114 views

Where can I go to have a rant about Open GEO Data?

Which is the most popular GIS forum or website that's not under the control of our corporate or government overlords? This place is great for questions and answers, but if I want to have a discussion ...
2
votes
4answers
364 views

Where can I get free New Zealand and Melbourne geodata?

I have just installed QGIS. Do any forum users know where I could download or access files and maps for 1) New Zealand, and/or 2) Melbourne/Victoria, Australia. Preferably it would be good to know ...
2
votes
3answers
165 views

What are the licence limitations on the free Ordnance Survey (OS) data sets?

The OS has some “free” map data, but what am I allowed to use it for?
2
votes
2answers
144 views

Choosing intervals for a map of race in the United States

I'm creating an open map layer of race in the United States using Census Data. This layer will be publicly available in the near future as "Justice Map". The goal is to help others create maps using ...
1
vote
1answer
27 views

Background map as open data from geoserver

I'm in the process of opening up as much data to the public as possible. I've been told to open up for the background map (tiles?) which is used from a geoserver(.org), so others can use the ...
1
vote
1answer
288 views

Direction on OS Meridian data

I've been looking to use the Ordanance Survey's Meridian data (part of the their OpenData suite) for doing vehicle routing. Whilst I can infer road class from the NUMBER property on each polyline, I ...
0
votes
1answer
47 views

Where to find street names for each city in US?

I'm sorry if my question is stupid but I had to ask. I'm building a database of US states, cities, streets AND their basic relations to each other. I already have state and city tables. Where can I ...