Questions about obtaining data.

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29
votes
7answers
14k 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 ...
45
votes
21answers
52k 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 ...
17
votes
9answers
4k views

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 ...
33
votes
6answers
11k views

Downloading OpenStreetMap Data

Is there a straightforward way to download data from OpenStreetMap (OSM)? Using North America as an example, I realize Cloudmade (http://downloads.cloudmade.com/north_america) and geofabrik ...
8
votes
3answers
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 ...
21
votes
5answers
3k 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 ...
14
votes
3answers
5k views

Converting SimpleGeo Places GeoJSON file to shapefile?

SimpleGeo has recently made their "Places" data set freely available which is GREAT, because now we can use it for our own purposes, even offline. So I went about downloading the 2GB dataset, which ...
21
votes
8answers
15k views

Where to get 2010 Census Block data?

This might be a stupid question but I would like to download 2010 Census Block Data for several towns and I can't seem to find it on American Factfinder. Is it there? And if not, does anyone know ...
14
votes
3answers
857 views

Is there an automatic function in QGIS to package all files in a project for transferability?

In my project, I use a lot of geodata from different directories. Now I want to give the QGIS project to a colleague (eg on a CD). Is it possible to copy the shapes from different directories ...
7
votes
4answers
4k views

Site to download al USGS Topo Maps in bulk

I am trying to create seamless topomap WMS or TMS layer that covers the entire US (not interested in geo-pdfs). To do that, I need either the rasters (geo-tiffs, etc) or preferably vectors (whatever ...
7
votes
3answers
4k views

Finding municipal-level administrative boundary data for India?

Does anyone know how to find a shapefile with boundaries of Indian municipalities? I have tehsil boundaries as for year 2001, but I would like boundaries of municipalities and, ideally, also ...
1
vote
2answers
2k views

POI Datasets for North America

I use foursquare because it contains a lot of POIs. Which database do you use when you need a point of interest in North America?
20
votes
10answers
27k views

Where can I obtain an up-to-date list of US ZIP Codes with Latitude and Longitude Geocodes?

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 ...
21
votes
6answers
772 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 ...
13
votes
8answers
943 views

List of US government free GIS data online

The US government publishes a plethora of useful, high-quality GIS data sources online. The data includes: Municipal and international boundaries Classified points of interest Geographic maps ...
12
votes
10answers
15k views

Is there a comprehensive list of latitude and longitude values for cities around the 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 ...
5
votes
2answers
314 views

Available US State or National business (or employer) database lists?

This question dovetails with this post on geomarketing applications. I am familiar with some of larger, paid-for business registry's like InfoUSA and Dunn & Bradstreet. While the detailed ...
3
votes
3answers
995 views

Where can I find the finest granularity of 2010 US census population information?

I am writing a re-districting application where I want to be able to create US voting districts based on geographic coordinate population data. In a perfect world, I would have the population for each ...
16
votes
3answers
5k views

How to download the entire ASTER GDEMv2 dataset?

On October, 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 drawing ...
16
votes
6answers
2k views

Sources of realtime spatial data

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 ...
14
votes
7answers
6k views

Where can I find China data?

I'm looking for good free online sources of vector data on China (shapefiles of cities, provinces, terrain etc). Would anyone be able to suggest where to look? Are there any open repositories of this ...
14
votes
4answers
12k 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 ...
17
votes
3answers
820 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?
9
votes
10answers
3k views

Need a Benchmark GPS Trajectory data-set? Anyone?

I'm looking for a benchmark GPS data set, available for research purposes for free. I've found GeoLife GPS Trajectories dataset from Microsoft Research but I find it a little incomplete. What I need ...
14
votes
4answers
6k 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.
3
votes
1answer
879 views

Programmatically download (seamless) NED tiles?

I used to download 1/3 arcsecond elevation geotiffs from extract.cr.usgs.gov using web services. But a few days ago, that stopped working, probably because USGS reorganized their site. I tried ...
3
votes
3answers
1k views

How to transfer data from spreadsheet into shapefile?

I am looking at Deprivation in the UK and there is some good data in the form of spreadsheets on this website http://www.communities.gov.uk/publications/corporate/statistics/indices2010 I would like ...
1
vote
3answers
248 views

Equivalent of CORINE land cover data sets for rest of world

I am looking for the equivalent of CORINE land cover data sets (100 meters) for the rest of the world; not merely urban areas but any area in general. I see sousa's question unanswered so I thought I ...
4
votes
5answers
1k views

Can I download the entire NRCS SSURGO database?

I am interested in downloading and using the entire USGS SSURGO database. The California Soil Resource Lab provides instructions on working with these data in R, but it starts with the assumption ...
15
votes
8answers
452 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 ...
15
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 ...
25
votes
3answers
561 views

Why are Data Projections relevant?

Sorry for my ignorance - especially after being in this area for a long time. Why is it useful to store data in unusual projections and datums? I understand the value of projections as output ...
19
votes
3answers
658 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? ...
17
votes
6answers
7k 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 ...
16
votes
6answers
1k views

Where can I get a 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 ...
16
votes
7answers
1k 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 / ...
12
votes
8answers
6k views

Obtaining Australian Spatial Data?

I already have basemap data - for that Bing Maps or OpenStreetMap are fine. However, for demonstration purposes I need data for operational layers that I can throw on top of this. It needs to be ...
11
votes
7answers
21k views

Select distinct values from a single column of an attribute table (or layer)

Is there a way to select distinct values from a column in ArcMap? I have the data in both GDB and SHP formats. I have searched for ways to select using SQL, QueryLayers, ModelBuilder and individual ...
5
votes
3answers
4k views

3D visualisation with open source GIS software [closed]

I'm searching for QGIS (or other open source GIS software) tools that can analyse XYZ data. Also I'm interested to hear about if anyone have migrated to non commercial software regarding geological ...
11
votes
7answers
13k views

Where can I find a shapefile of city boundaries in the 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.
8
votes
5answers
2k views

Definitive source for downloading DEM data

USGS has been moving towards serving data through The National Map Viewer. They have several WMServices through their website that serve elevation data to the public (hillshade & DEM). The ...
6
votes
5answers
706 views

Provincial Base Mapping Data Sources in Canada

I'm very familiar with the Ontario Base Mapping Data, and am looking for similar data for other Canadian Provinces. Perhaps we can start a list of resources here? I'm looking for something at a larger ...
14
votes
7answers
17k views

Where can I find Canadian postal code geometries?

Where can I find the shapefiles for Canadian postal codes?
8
votes
1answer
6k views

Looking for ZIP+4 boundaries

I know where to find 5-digit ZIP code boundaries. Do 9-digit ZIP code boundaries exist? If so, where might I find them?
5
votes
4answers
3k views

Free sources of mapping data for France

We are moving to France soon, and are currently investigating a lot of areas. Does anyone know of good online/offline resources for French mapping? I am very interested in mapping, weather, ...
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 ...
9
votes
2answers
302 views

Tools to compare unversioned copies of geospatial data

My office has about 100 GB of geospatial data of varying forms (imagery, feature classes in geodatabases, LIDAR, tables, etc) that have gone somewhat unmanaged for the decade during which they were ...
6
votes
3answers
4k views

Spatial data? Geodata? Geographic Data? Geospatial data?

Language changes all the time and I see various uses of the words defining the data we use in GIS in our day-to-day lives. But what's right? Is there a right answer out there that we would all agree ...
6
votes
4answers
537 views

Where can I get country, region, and city data?

I need the names of countries, country regions and cities of the world. Where do I get that kind of information?
2
votes
4answers
6k views

Converting WKB to WKT

how can i convert wkb to wkt form ... i stored coordinates in wkb but now can it will display to use in wkt form