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6
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3answers
2k views

Where I can find world terrain data?

I need free terrain data for the whole world which I can import into TileMill. Is there some source where I can download them? Thank you.
6
votes
3answers
1k views

Is there a free source of U.S. time zone borders?

I have a mapping app in which I need to display the borders between U.S. time zones. The easiest and most accurate way would be to feed in a list of lat/long coordinates representing the vertices of ...
6
votes
3answers
199 views

How to cite Geospatial Data that has been edited?

I used data from the Ordnance Survey for some maps I created. License information for the Ordnance Survey says to cite OS data like this: Contains Ordnance Survey data © Crown copyright and database ...
5
votes
1answer
2k views

Is there a source for free CSV files with geo data and other desired fields? [closed]

I'm writing some software components that process geospatial data. The input data is a CSV with general columns (e.g. name) and geo columns (e.g. city, lat or zip). I would like to test these ...
4
votes
2answers
909 views

How to manually edit 16 bit GDEM elevation data on a Geotiff file

I'm building a virtual 3D terrain scenery using both satellite imagery (google maps satellite) and elevation data from GDEM Aster elevation data (geoTIFF format files). My problem is that the ...
1
vote
2answers
2k views

One Polygon Joining to Database with Many matching records

Using ArcMap 10.1. Is this possible to have one polygon and join to a database/excel with many matching records? I would like to have 1 polygon but match to 100 corresponding records in a table. When ...
2
votes
0answers
145 views

Where can I download free or open access census datasets for China, including their respective spatial boundaries? [duplicate]

I am interested in the equivalent of US Census Bureau open data and its relevant Tigerline spatial data, albeit for China. In Canada, we also have data released by Statistics Canada along with ...
8
votes
4answers
776 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] ...
3
votes
1answer
453 views

Convert multiple TIFFs into one?

I have downloaded the Blue Marble dataset, and it consists of eight GeoTIFF images, labeled like this: A1 B1 C1 D1 A2 B2 C2 D2 I would like to use these tiles for GeoServer to be served as WMS. ...
6
votes
1answer
2k 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 ...
6
votes
2answers
1k views

Where to find shapefile basemap for the Indian Ocean?

I need to plot point data over a basemap of the Indian Ocean. Can anyone tell me where I can find such a basemap in shapefile format?
4
votes
2answers
4k views

German coordinate system from Lat/Long

I have WGS latitude and longitude for data points near Munich and I'd like to use a grid-type coordinate system, like the Ordnance Survey grids in Ireland or the UK. What coordinate system do you ...
2
votes
1answer
58 views

FIPS code data combination

I have two datasets- matching years, different sources. They are matchable by FIPS code, but my problem is 1) that the first data set, from which I am drawing my independent variable data, only has ...
1
vote
1answer
146 views

1990 US Census Block Boundary File?

Does anyone here know of a source from which 1990 Census Block polygons can be downloaded? For Illinois, specifically, if not for the entire country? The Census Bureau has "no plans to create Block ...
4
votes
2answers
2k views

Is there a simple interface from which I can extract average summer temperature and humidity for a list of latitude and longitudes?

I am interested in finding the summer average (either climatalogical mean or for a specific year) relative humidity and temperature for a set of globally distributed latitude and longitude coordinates....
4
votes
3answers
2k views

Where can I find a shapefile of all the Montreal Neighborhoods?

I am trying to map out Montreal and was wondering if there is already an existing polygon shapefile of all the neighborhoods. Here is a link to a perfect example of what I am looking for. http://en....
7
votes
2answers
1k views

Looking for data sources for real road speeds

A data question really, though there may be a useful geo-processing solution. Context: I am calculating "drivetime" catchment areas using PgRouting and OSM / OSM2PO. If my employer/client is to ...
6
votes
3answers
7k 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 ...
3
votes
2answers
90 views

Where can I find spatial data on polar fish populations?

Where can I find spatial data on polar fish populations? I am looking specifically for polar cod, but any fish will do at this point in my project. I also need arctic ocean salinity, temperature, and ...
3
votes
1answer
628 views

Looking for GIS Data for Curitiba, Brazil?

I am wondering if anyone knows where to find building footprints, road network, transit, or environment feature data for Curitiba, Brazil. Thanks
7
votes
3answers
5k views

How can I transfer data from one PostGIS database to another?

I have quite a bit of GIS data in a old PostGIS Database (version "1.1.6") and I need to transfer it to another PostGIS Database ("POSTGIS="1.5.3"). I tried creating a backup and restoring that on ...
10
votes
3answers
1k 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 ...
4
votes
2answers
2k views

Historical Hurricane Tracks

I have found a great source for historical hurricane data, but I can't seem to find a way to download the track information. It appears that you can only view the data on the website. I was ...
1
vote
3answers
2k views

Where can I find shapefiles for New Zealand Cities and Suburbs/Neighbourhoods?

I'm trying to find some shapefiles (administrative boundaries) of New Zealand CITIES and SUBURBS/NEIGHBOURHOODS. I've found some boundaries for the Country, Regions, Districts (not useful for me) .. ...
2
votes
4answers
498 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 ...
4
votes
3answers
2k views

Canadian province boundaries in latitude and longitude

Are there any datasets available that give a list of latitude and longitude points for Canadian province boundaries? I don't need anything too detailed as I'm displaying collated data in smallish ...
3
votes
2answers
978 views

World map shapefile including disputed areas

I am looking for a global shapefile that allows you do show data for all disputed areas (like Waziristan, Spratlay Islands, Kahsmir, etc.). Do you have any idea where I can find a shapefile with not ...
9
votes
2answers
504 views

How do you treat partial 3d features in PostGIS?

We have features from survey data that contain partial 3d information. The most common example would be a 2D LineString representing a road, that contains elevation information in certain points ...
1
vote
1answer
155 views

Paleoclimatology Data

I have been looking for paleoclimatology data. I have found some with NOAA ( http://www.ncdc.noaa.gov/paleo/data.html ) but all the data is stored as a KMZ and a series of linking text and html files....
7
votes
4answers
1k views

Where can I find free Archeology datasets?

Are there any sites that gather together free datasets? I am especially interested in published data relating to archeology.
3
votes
2answers
347 views

Why can't I see all records in my personal GDB in QGIS?

I am running QGIS 1.8. I have a layer from an ESRI Personal GDB. There are 431 features in the layer. When you load the layer into QGIS, and look at the Metadata properties, it shows the number of ...
2
votes
1answer
4k views

How to get Openlayers cluster strategy work for large data?

The map Layer has around 1500 points. I am able to display all the points in the map without any problem but adding the cluster strategy to the layer does not work. The Cluster strategy functions when ...
16
votes
3answers
3k 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 ...
16
votes
2answers
3k views

What is the best practice for data management? [duplicate]

I have always been curious how other folks are storing their spatial data. Outside of an enterprise environment where much data is stored in enterprise geodatabases, is it better to store data per ...
6
votes
1answer
1k views

Where can I find European City boundary data?

Does anyone know any sources for free European city boundary data? Thanks!
2
votes
4answers
926 views

Dublin postal areas shp file?

I'm currently developing an application that uses shp files for Dublin. In particular I want to display the postal areas for Dublin but cannot locate an appropriate shp file. Can anyone advise where ...
7
votes
1answer
225 views

Getting monthly weather means for future climates?

I am trying to generate spatially downscaled (5-10 arcminutes) future climate maps indicating monthly mean min and max temp, and precip. Most people usually need to extrapolate monthly data into ...
-4
votes
3answers
4k views

The list of geocodes of villages/cities of India wanted [closed]

Any relevant information is welcome. For example, license of the data, where I can find relevant sources, etc.
0
votes
0answers
28 views

Desktop tool to batch convert Shapefils to CSV with polygon outline coordinates [duplicate]

Possible Duplicate: How to convert .shp to .csv including attributes AND geometry? Is there a desktop tool that would allow me to take dozens of large (300MB) shapefiles and convert them into ...
13
votes
2answers
2k views

Where can I find historic country border data?

I am looking for border polygons from World War I (from 1914-1918). Is there a resource out there that maintains this kind of information?
3
votes
0answers
421 views

Are there any shapefile-based GPS data recorders?

I am looking for a data recorder that can be programmed to send a serial data request to a field computer and then accept and record an incoming data string and tie it to GPS location and then save ...
2
votes
2answers
244 views

Is there anywhere that I can obtain global UV data in either raster or vector format?

I'm looking for some UV data (currently with no spatial or temporal resolutions in mind, but ideally split into UV-A and UV-B) for the whole earth. Can anyone recommend a source for data like this or ...
2
votes
1answer
47 views

How to access existing graphs in arcGIS 10

I am trying to access an existing graph in arcGIS version 10. The student workbook I am using was written for version 9.3. Version 10 does not have "tools" option in the toolbar. The instructions ...
2
votes
8answers
10k views

Finding shapefiles of pipeline data?

Does anyone know where I can get or find shapefiles for pipelines (USA location)? Preferably free as I've never done pipelines before and I'm meeting a client next week that is doing pipeline work. ...
8
votes
2answers
563 views

Sources of geolocated Tweets

Are there any publicly available sources of geolocated Tweets? I'm aware that one can collect them on their own, but was wondering if there is something readily available to play with. There is a ...
7
votes
3answers
751 views

What format to use for highly compressed vector data?

Does anyone have information about possible formats for highly compressed vector data? Some basic requirements. Must be possible to read using the larger commercially available platforms. (ArcGIS, ...
1
vote
2answers
113 views

Looking for average temperature data for Afghanistan

Hey all I am looking for a average temperature data for Afghanistan monthly over a year, precipitation would work too. In a shapefile, if anyone has any or knows anywhere that I could access one ...
4
votes
1answer
847 views

Joining Census Data

I have collected census data for a county in Pennsylvania. Data varies from 1999-2010. For my data before 2010, a significant number of blocks do not match up (image below) when I join the data (...
0
votes
0answers
87 views

Trouble with making shapefile from xls file

Using DIVA GIS, each time I attempt to import some species data from an xls file to be plotted onto a map, the program becomes very slow and eventually becomes unresponsive. My dataset originally ...
0
votes
0answers
36 views

consolidating of all the census data for the state of Florida from the below listed US Census website

I have a potential project to utilize census data within a GIS and the hard part appears to be the consolidating of all the census data for the state of Florida from the below listed US Census website....