Hot answers tagged

51 votes
Accepted

Map material from China not allowed to leave that country

I am not sure if the context of your question is really on-topic here, but since the answer and its implications is very much relevant for travellers as well, I'll give it a try. The explanation you ...
user avatar
  • 506
24 votes
Accepted

Where can I get land-use data for Nigeria?

Here is a very comprehensive shapefile for Nigeria and provides land-use data in the form of legends in Excel files. There is also an ArcGIS layer for styling as there are 23 different filters (I did ...
user avatar
  • 72.4k
22 votes
Accepted

City shapefile for free

Populated Places 1:10m (Natural Earth) Shapefile 7343 Cities Download from http://www.naturalearthdata.com/downloads/10m-cultural-vectors/ (Populated Places) Terms of Use http://www....
user avatar
  • 48.5k
21 votes
Accepted

Free radar (SAR) satellite data

You can get Sentinel-1 data from scihub.esa. Requires only registration (And most likely, non-commercial use). As Sentinel-1 has just become operational the archive is not very extensive but should ...
user avatar
  • 422
19 votes
Accepted

Seeking point cloud (LiDAR) data?

I decided to merge other answers with mine and organize them into a tabular format. I think it is easier to read and manage for future visitors: The table can be accessed from the following link in ...
18 votes

Seeking Free Shapefile of European Countries?

You can download the "official" EU administrative/statistical units from Eurostat's GISCO service. The vector layers are available as ESRI Shapefiles and Personal GDBs, at different resolutions from ...
user avatar
  • 4,752
15 votes

Free tile provider for Leaflet

You can simply use Leaflet Provider extension to pickup the tile works the best for your project.
user avatar
  • 1,033
14 votes

Obtaining up-to-date list of US ZIP Codes with Latitude and Longitude Geocodes?

Try this: http://download.geonames.org/export/zip/ It is licensed under a Creative Commons Attribution 3.0 License. They even have zip codes of various other countries around the world.
user avatar
  • 141
14 votes

List of central coordinates (centroid) for all countries?

You can retrieve this information using R like this: library(rgeos) library(rworldmap) # get world map wmap <- getMap(resolution="high") # get centroids centroids <- gCentroid(wmap, byid=TRUE)...
user avatar
  • 1,118
14 votes

Seeking shapefile of hexagons that covers world?

It's probably easiest for you to create your own hexagonal grid shapefile. Many GIS have built-in tools for creating hexagonal grids of any desired resolution and orientation. For example, in the ...
user avatar
  • 10.8k
14 votes

Seeking Free Shapefile of European Countries?

Natural Earth is a great source for free data, including country and state borders, at a variety of scales. You would just need to select European countries using the attribute table.
user avatar
  • 1,254
14 votes

ESRI Field Names?

Your field names seem to be linked to CENSUS data (very similar to this file ) @Map_man answer will lead you to the source of your data, to be sure. See here some metadata that seem to fit : https://...
user avatar
  • 7,508
13 votes

Alternatives to Shapefiles as open-source, cross platform dataset types

A new format that has come about recently is the Geopackage. This specification is built on top of the SQLite database, so it has the same single-file basis, but with the added benefit of being an ...
user avatar
13 votes

Comparison of open data portal solutions

This question has been converted to Community Wiki and wiki locked because it is an example of a question that seeks a list of answers and appears to be popular enough to protect it from closure. ...
13 votes
Accepted

Why use a database when you can have all of your data in javascript/openlayers?

Why use a database? Because it's not necessarily the case, especially with larger datasets, that you can expect to be able to push the entire thing to the client. If you're talking thousands of ...
user avatar
13 votes

Seeking alternative to Google Maps Elevation API

I've been working on opentopodata.org as a free, open alternative to the Google Maps Elevation API. Request URLs look like this: https://api.opentopodata.org/v1/eudem25m?locations=51.875127,-3....
user avatar
12 votes

Where is World hillshade free download?

Three of the first sources that come to mind: OSM hillshade basemap USGS NED hillshade basemap ESRI hillshade basemap (based on SRTM 30m) Or you could always download the free SRTM 30m data and ...
user avatar
  • 9,450
12 votes

how to visualize csv data every 10 rows in QGIS

Assuming you don't have a unique id field, you can use rule based symbols with the following filter $id % 10 = 1 The % sign is equivalent to remainder, so any row that divides by 10 with a ...
user avatar
  • 8,217
11 votes

Finding footprint data for US buildings?

Microsoft just open sourced 124,885,597 million computer generated building footprints in all 50 US states https://github.com/Microsoft/USBuildingFootprints
user avatar
11 votes

Remove unneeded columns from geographic data file?

Shapefile as a temporary file format is not necessary and it may also alter the GML data (shorten attribute names, cut strings to max 255 characters, change DATETIME to DATE etc.) I would use ogr2ogr ...
user avatar
  • 52.3k
11 votes
Accepted

How to disable Layer Preview in geoserver, which is available by default for public?

If you uncheck the Advertised box for the layer under the Publishing tab the layer will not show up in the Layer Preview. Would that be sufficient for your needs?
user avatar
11 votes

Free tile provider for Leaflet

As pointed out by user30184, if you are using OpenCycleMap in an environment where the number of tiles you are requesting might be an issue, please check out the terms and conditions of the provider. ...
user avatar
  • 12.5k
11 votes
Accepted

Seeking polygon shapefile of countries, states and islands?

You can use the site Global Administrative Area. There, you can find surfacic shapefile for each country. Each country is divided according to its administrative divisions (ex: provinces). You can ...
user avatar
11 votes
Accepted

Where can I find state borders for Germany?

You can download free state border layers of Germany from DIVA-GIS by selecting Administrative areas as the subject.
user avatar
  • 72.4k
11 votes

World's capital cities shapefile?

Natural Earth provides a populated places layer which has a capital attribute.
user avatar
  • 75k
10 votes

Seeking free elevation data for Europe?

Since 2013 there is the EU-DEM 25 m: new Digital Surface Model (DSM), representing the first surface as illuminated by the sensors. You can download the GeoTIFF files here: http://www.eea.europa.eu/...
10 votes

Seeking shapefile of city boundaries in US?

Getting the Data You can acquire US Census Place Data, which includes cities, here. For instance, Rhode Island's 2017 Place Data is available here. For ease of bulk downloading, the full list 2017 ...
user avatar
  • 1,761
10 votes
Accepted

What is Google source for United States topographic data?

There is more than one source depending on the area of interest around the globe. Google Maps is the terrain layer, which provides a shaded relief (aka hillshade) view of the topography derived ...
user avatar
  • 48.5k
10 votes

Seeking shapefile for Pacific Ring of Fire?

You could start with a shapefile of volcanoes and drop the file into QGIS. Then set the projection to EPSG:3832 to give you a Pacific centred map. With the addition of a Natural Earth raster as a ...
user avatar
  • 75k
10 votes
Accepted

Free satellite data availability for moon

Perhaps the following links might be useful: http://ode.rsl.wustl.edu/moon/coverage/ODE_Moon_shapefile.html https://webgis.wr.usgs.gov/pigwad/down/moon_dl.htm https://webgis.wr.usgs.gov/pigwad/down/...
user avatar
  • 72.4k

Only top scored, non community-wiki answers of a minimum length are eligible