use for questions seeking data that may include commercial/paid solutions - use open-data if it must be open/free

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30
votes
7answers
16k views

Most Up-To-Date Source for US Zip Code Boundaries

I was just wondering what the most up-to-date source for US Zip Code boundaries would be. My first thought was TIGER, whenever that comes out, but then I thought that the Postal Service might be a ...
2
votes
1answer
907 views

How to process topographic survey data in ArcGIS?

I am interested to find out how others process topographic survey data in ArcGIS. Often I am only given a text file or an Excel spreadsheet containing XYZ points and simple attribute information ...
11
votes
7answers
667 views

Where can I find GIS data to test GIS coordinate operations?

I am trying to find some data that can be used to test GIS coordinate operations from one CRS to another CRS. So far all I have found is the Gold Data set and also various example points in the EPSG ...
5
votes
3answers
2k views

Does a national(USA) interstate rest stop/rest area dataset exist?

And I don't care about format--worry about that later! I found some maps in Google maps, usually per state. I also have one map made my someone else, that no longer appears in the Google Maps search ...
15
votes
4answers
13k views

Where can I find building footprint data?

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 ...
1
vote
3answers
3k views

Downloading 1 arc-second elevation data for Canada other than Geobase?

Can someone suggest a source for Canadian elevation data better or equivalent to 1 arc-second? I have a good data source for Ontario but for other provinces folks often recommend Geobase which claims ...
14
votes
4answers
7k 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.
1
vote
2answers
1k views

Where can I get UnitedStates.gdb file

I am doing this tutorial http://help.arcgis.com/en/sdk/10.0/arcobjects_net/conceptualhelp/index.html#/How_to_geocode_a_single_address/00010000038r000000/ but it requires the following file: ...
13
votes
6answers
997 views

What is the best way to visualize multiple large LIDAR tiles?

I want to load approximately 10 large LIDAR tiles for analysis. I have tried using ArcScene but it appears there is a limit on how much data ArcScene can handle at one time. Each tile is 65-90MB in ...
5
votes
3answers
457 views

What kind of datasets are necessary for geomarketing applications?

If you would have to create a data base for geomarketing applications yourself, what kind of datasets would you purchase/collect? The first goal would be to find new store locations. Another would be ...
0
votes
1answer
131 views

How can I retrieve an attribute's domain using ArcIMS ActiveX Connector?

I have an ArcIMS Image Service that's consuming data stored in an ArcSDE database (both v9.3.1). Many of the layers have attribute columns that use coded value domains defined in the SDE database, ...
7
votes
5answers
266 views

What are the concerns with using Creative Commons licenses for spatial data?

As more people and organizations are realizing the importance and benefits of publishing their data under an 'open' license, people are looking for the best license to apply. Creative Commons CC ...
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 ...
10
votes
3answers
5k views

Define “geospatial data” for a non-GIS professional

I realize this is a sort of a subjective question, but I've seen other subjective questions on the site, so I thought it I'd put it out there. A colleague recently had a request for "geospatial data" ...
2
votes
4answers
137 views

Where to license non-automotive POIs for France, Spain and Portugal?

qualified POIs are needed for a commercial project - should cover broad out-of-car usecases (not needed: parking, gas stations). Could be commercially licensable data or derived from national geodata ...
46
votes
21answers
54k views

Are there any free administrative boundaries available as shapefiles?

After learning about the US Census's TIGERLines datasets I'm addicted to GIS :) I've working with the following layers, from the USA data Country boundaries State boundaries County boundaries City ...
10
votes
12answers
1k views

canvec: why so quiet? where are all the users?

It has now been a little over 3 years since Natural Resources Canada released CanVec, a national coast to coast to coast spatial dataset at 1:50,000 or better nominal scale. In the interverning time ...
6
votes
1answer
234 views

What is the best way to store Flickr's Shapefiles Public Dataset in SQL Server 2008?

I'm wanting to import specific locations from the Flickr Shapefile Dataset into SQL Server would like to know what is the best way to store the data in SQL Server 2008? Link the the 1.0 Dataset: ...
16
votes
4answers
3k views

Simplifying adjacent polygons

I encountered a problem simplifying set of polygons that are adjacent. If I simplify each polygon separately with the Douglas–Peucker algorithm (which is used by many open source tools), the resulting ...
4
votes
1answer
333 views

Can someone explain in simple terms the licence on Google “satellite” images?

What can I and can I not do with the Google satellite images?
3
votes
3answers
186 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?
4
votes
4answers
271 views

Are there any other providers of map data in the UK apart from the Ordnance Survey?

The Ordnance Survey charges a lot for most data, so what are the other options?
4
votes
4answers
322 views

In the UK, how do I convert from an address to a lat/long?

Please include where I can buy the dataset and how much it costs?
5
votes
5answers
362 views

What is the best way to protect data online?

What techniques do people use when protecting data (e.g., preventing a user downloading the whole dataset) they are overlaying on top of Google/Yahoo/Bing etc.?
15
votes
8answers
457 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 ...
14
votes
8answers
19k views

Where can I find Canadian postal code geometries?

Where can I find the shapefiles for Canadian postal codes?
17
votes
3answers
858 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?
8
votes
2answers
3k views

Ordnance Survey grids - download or generate?

Does anyone know a source from which to download vector UK Ordnance Survey grids at varying resolutions? Or failing that, a tool that can create an OS grid at a specified resolution? There are plenty ...
5
votes
3answers
403 views

Where can I get data for traffic signals, stop signs, and other sign assets/inventory?

I'm working on a project involving roads. The quality of the service would benefit from knowing if a given road is continuous or if it's broken up by stop signs, traffic signals, and other things ...