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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12
votes
10answers
6k views

Need a Benchmark GPS Trajectory data-set?

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 ...
12
votes
5answers
10k views

Downloading SRTM data

Is there an easy way to mass download SRTM data? The data is published for download here, but it's sliced into thousands of small files, and I don't see an FTP option for more efficient downloading......
12
votes
3answers
4k views

Where can I find country borders data in plain text format? (XML, JSON, CSV, etc)

I'm trying to obtain some data representing the borders of all countries in the world. This data doesn't have to be very precise, it is to draw the countries on a computer screen. I did a bit of ...
12
votes
7answers
20k 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 ...
12
votes
10answers
14k views

Looking for a World Airport Database

I'm looking for a database that contains all (most, many...as many as it can) world airports. I know of one such set available - http://www.world-airport-database.com/database.php - but the terms ...
12
votes
2answers
25k 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 ...
12
votes
4answers
22k 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?
12
votes
2answers
7k 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 ...
12
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5answers
3k views

Seeking free Archaeology datasets? [closed]

Are there any sites that gather free archaeology datasets?
12
votes
5answers
22k views

Looking for a good online map with rivers [closed]

Is there any internet map source (zoomable, tiled, i.e. "google like") with good display of rivers? I.e. well labelled even on larger scales? So that I'm for example able to track Donau river (with ...
12
votes
3answers
2k views

How is raw OSM data processed for openstreetmap.org

Can anyone provide insight into how OSM data is processed or rendered for www.openstreetmap.org? A specific example... I extracted data from a recent planet.osm PostGIS dataset for an area in ...
12
votes
1answer
274 views

Turning off all pulsing-heartbeat and other animated effects in ArcGIS Pro?

Every time I select a feature or edit or split a feature the selection, appears to slowly pulse which is a new visual effect in Pro. The pulse effect takes way too long bordering on annoying which ...
11
votes
8answers
12k views

Seeking 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
3answers
25k views

City shapefile for free

I am looking for a simple point shapefile which indicates where the cities of the world are. I cannot seem to find one which is free of charge and meets my requirements. Ive got this one: http://...
11
votes
4answers
2k views

Looking for a world database with locations of medical centers, schools, kindergartens, etc

Is there some database with official information about medical centers, schools, POI's and their geo coordinates for all countries in the world? It doesn't have to be free, but I need the GEO ...
11
votes
6answers
32k views

Seeking Postcode Shapefiles for UK?

I am trying to find the shapefiles for postcode sector and districts in the UK. Specifically inside London. I know I can go and pay for these but I only really need to use them once. I want to ...
11
votes
4answers
435 views

Where can I find historic maps of city size?

I'm interested in examining basic dimensions of city size, primarily area (though population would also be of interest) from the earliest possible records. It does not matter where the city is in the ...
11
votes
4answers
8k views

OpenStreetMap Neighborhood Boundaries

Is it possible to download neighborhood boundaries from OpenStreetMap? I see on maps that they often indicate neighborhood names; is there a way to retrieve their coordinates and boundary polygon ...
11
votes
5answers
19k views

Source for US parcel boundary data?

Where can I find shapefile (or other vector) data for US private parcel boundaries (such as for a plat map)?
11
votes
2answers
1k views

Realtime traffic data provider(s)

What services provide realtime (or daily-updated) basic traffic informations for Western Europe ? For example, traffic.com/Navteq provides such data to Bing Maps for US/Canada and Microsoft suggests ...
11
votes
1answer
470 views

Where can I find a histogram of the grade of the Earth's surface?

I've found a histogram of the elevation of the Earth's surface on Wikipedia: However this doesn't give any information about the distribution of grade. For example, the entire surface could be made ...
11
votes
2answers
250 views

How could I rate roads for scenic drives?

relative GIS newbie here. I've been working on a personal project to rate roads on how nice a ride they'd be on a motorcycle. I wrote a Python program to work through road data in the TIGER dataset (...
10
votes
7answers
50k 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 ...
10
votes
11answers
3k views

Using CanVec from Natural Resources Canada?

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 ...
10
votes
3answers
3k views

Where can I get land-use data for Nigeria?

Anybody knows websites of land use for the Federal Republic of Nigeria? Free or paid. I am looking for the states of Kogi and Anambra.
10
votes
3answers
10k 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" ...
10
votes
6answers
568 views

What GIS Data should Amazon add to its Public Data Sets?

Amazon says: If you have a public domain or non-proprietary data set that you think is useful and interesting to the AWS community, please submit a request below and the AWS team will ...
10
votes
2answers
3k views

Remove unneeded columns from geographic data file?

I have some GML data that has some unneeded columns in it. I'd like to remove these columns in order to reduce the file size. (To clarify: I mean that the file has many points in it, and each of these ...
10
votes
5answers
3k views

Looking for USDA plant hardiness zone shapefile

Given that this is a USDA resource I really thought that it would be available online somewhere, but for the life of me I cannot find a shapefile for the USDA plant hardiness zones anywhere. Does ...
10
votes
2answers
759 views

Designing an API for spatial data

I am considering trying to make an API so that I can make some spatial datasets available to colleagues for analysis. Part of my work has been to analyze and prepare data which can then be used for ...
10
votes
4answers
4k 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 ...
10
votes
4answers
8k views

Postal areas for Germany?

Does anyone of you know how and where I can download postal area districts of Germany in shapefiles (download free of charge if possible).
10
votes
3answers
323 views

Know of a source of historical 24-hour rainfall totals for US locations?

I'm looking to get historical information on the magnitude of rainfall events for a given location (Boston, Massachusetts USA). For example, to create a histogram of rainfall events by precipitation ...
10
votes
2answers
8k views

What are the existing datasets of world maritime routes?

I have a list of cargo ports of all over the world and need to show some port-to-port trips on a map, and also to compute lengths of these trips. For that, I need a dataset of actual maritime routes (...
10
votes
5answers
7k views

update one shapefile attribute table with values from another dbf table

I try to explain here what I am trying to do: I have one shapefile and one independent dbf table with the same fields. In the dbf table all the fields are populated but in the shapefile attribute ...
10
votes
1answer
1k views

Where can I find paved/unpaved road surface data for the US?

I'm currently working on a small program that evaluates OpenStreetMap data to calculate how twisty or curved roads are in order to generate maps of roads that may be of interest to motorcycle riders ...
10
votes
3answers
561 views

PostGIS (2.0?) - Native Versioning of the Datastore

I recently have been surprised to see there are not too many solutions at all discussing the best methods of versioning datastores which are made available for editing. I am looking for a robust, ...
9
votes
5answers
25k views

Free radar (SAR) satellite data [closed]

I'm looking for free (non-commercial use) sources of radar (SAR) satellite imagery. Does anyone know of sources?
9
votes
8answers
10k views

Comprehensive database of all cities/towns in South Africa?

The title says it all really - I'm looking for a comprehensive list/database of all cities/towns in South Africa. I know about these guys: http://www.afrigis.co.za/, but they're just not getting back ...
9
votes
5answers
992 views

Where can I find state borders for Germany?

I'm looking for free state border layers for Germany. Are there any free sources for such data?
9
votes
3answers
3k views

Where can I find latitude and longitude data for the borders of U.S. Congressional districts?

I'm interested in finding the most up-to-date latitude and longitude data for U.S. Congressional district borders. I'd prefer a human readable format (e.g. XML), but I'm writing my own code so I can ...
9
votes
3answers
766 views

Making county-level shapefile from set of points at 30 x30 km spacing using ArcGIS for Desktop?

I have a data set in csv form, like: latitude, longitude, value -45, 45, 10 .... I would like to calculate county level means from these data, using either ArcGIS or R+grass. I have the ArcGIS USA ...
9
votes
3answers
4k views

What to consider when hiring aerial LiDAR survey? [closed]

My organization is considering hiring a company to capture new LiDAR data to help with current stormwater issues that we are currently experiencing. I am a GIS analyst that has been assigned with this ...
9
votes
3answers
4k views

Where can I find polygon data of wine (viticulture) areas and their main grape or varietal?

Where is coordinate data on the geographic boundaries of wine (vitaculture) areas and their main type of wine (grape or varietal)? a GIS shapefile or geoJSON file format would be perfect. Ideally I ...
9
votes
5answers
5k views

Is there a way to view KML natively in ArcMap?

Answering this question: How do I import/export KML to ArcGIS Desktop? raised another one. There are loads of tools to import/export kml/kmz. Are there tools available for native viewing of KML in ...
9
votes
3answers
3k views

Free and global basemaps for download

I'm pretty sure that a lot of people might have faced the situation where they search the internet for geographical basemaps on a global scale but can't hardly find the needed data in a short time and ...
9
votes
4answers
11k views

Finding free building height dataset for major cities around world? [closed]

I am searching for building/property data which include building height, building area, lot size, and building type classifications(preferably as complete as possible). I am working on an Earthquake ...
9
votes
4answers
1k views

What are some alternative sources for USGS data?

I've been using the USGS National Map viewer (http://viewer.nationalmap.gov/viewer/) for getting data for QGIS, but the download system is driving me insane. I enter my email address and [sometimes] ...
9
votes
1answer
624 views

OpenStreetMaps offline tile packs

Is there a place where I could download OpenStreetMaps tile packs for the united states? I would like to have offline access for the whole country.
9
votes
3answers
1k 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 ...