Questions about obtaining data.

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Does anyone know of Electric Company Boundary Shape files that are out there for Free?

Ohio has a great website for their Electric Service Commission and I am looking for a shape file or data that would get me the service boundaries of electric companies for other states. EIA has data ...
2
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1answer
81 views

Is pre-1990 historical block-level census data available online?

I'm looking for historical block-level data for Chicago. According to this Census bureau document, historical block-level census data exists for major cities going back to 1960, and even back to ...
5
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2answers
134 views

How to find library or other business POIs?

I am just starting an Intro GIS course, so I really have no idea what the best place is to find downloadable GIS data. I was really hoping to do my semester project on library or bookstore locations ...
2
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1answer
64 views

OSGB conversion error

So I am using ArcGIS 10 and trying to work in British National Grid. My shape file is in WGS84 UTM30N. By chance I passed the shape file across to a colleague and we both transformed into BNG. When ...
4
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1answer
319 views

SQL Server data modelling + spatial data = what book?

What recommended book can you provide about data modelling for geographical spatial data (geometry) in SQL server?
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0answers
32 views

RARE II Roadless Data

I am looking for data showing RARE II Roadless Areas on USFS Lands. RARE II was an early inventory of Roadless areas that was completed in the late 70s. This dataset is different than areas that are ...
2
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2answers
4k views

Detailed Bathymetric/Bathymetry contour data (0-200M)

I am looking for free Bathymetric contour data in shapefile format for depths between 0-200 meters for North America. I prefer contours at 10 meter increments, but will take whatever I can get. I ...
2
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1answer
390 views

Question about sizes of input rasters for raster calculation

To calculate any formula (conditional statements/relational operation etc) in the raster calculator in ArcGIS using two different sources of raster images, I'd like to know input rasters must be the ...
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0answers
184 views

Describing weather data in ArcMap area solar radiation analysis

I am writing up the methodology of the analysis I did on solar radiation availability for a city. I used the tool 'area solar radiation' with ArcMap 10, using the time configuration ...
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3answers
2k 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)?
5
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3answers
2k views

Open source database of world locations [duplicate]

Possible Duplicate: Comprehensive list of Latitude and Longitude values of cities round the world i would like to know if is out there any downloadable database of world locations, i know ...
8
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1answer
330 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 ...
3
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0answers
141 views

Advice on colour balancing a SPOT5 ArcGIS Mosaic Dataset

All, I'm working on a project using satellite imagery of a large braided river. I've been provide lots of SPOT5 images (that overlap). I've created a geodatabase, created a mosaic dataset, added the ...
6
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1answer
288 views

NYC Subway Line Station Order?

I've currently got data on the NYC subway stations (including name, position, and how many people entered and existed during a timeframe). Also, I have the data on which stations have which train ...
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1answer
364 views

Real time GPS data sources [duplicate]

Possible Duplicate: Sources of realtime spatial data Wondering if there are any free real time GPS feeds available for consumption. I am preparing a presentation about GIS and I thought a ...
6
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1answer
210 views

Fast data representation on the vector layers

I have found an interesting article about how HTML5 supports representation on large datasets. Article can be found here. In the article it is said that HTML5 and feature simplification can ...
6
votes
2answers
1k views

Building cartograms using Web GIS?

I would like to build a cartogram map using Web GIS. I have a basemap and a set of raw data in excel. I wondered what are the steps to build up a cartogram map using Web GIS? Note: Originally ...
3
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1answer
198 views

How to create a multimodal network?

How to add waterways and railroads without turn restrictions into the previously created street network dataset with turn restrictions, in order to create a multimodal network? For a university ...
3
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1answer
181 views

Simplest way to share map and data with ArcGIS 10.x and 9.x users

What is the simplest way to share a map and data with both ArcGIS 10.0 and 9.3 users, portably? This question could be rephrased as "Instead of waiting for Esri to (maybe) implement backwards ...
2
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1answer
44 views

FEMA LOMA Data Availability?

Does anybody know where there might be some good/current FEMA data? I am interested specifically in the LOMA data for Florida. I have found a WMS Service that is hosted by FEMA but I'm having trouble ...
4
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2answers
374 views

Where can I find Ethiopian electoral constituency and district (woreda) boundaries data?

I am a PhD student in Development Studies in Oxford. I'm trying to find a map of the Ethiopian electoral boundaries. These are not the same as the district (woreda) boundaries - districts can be in ...
4
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0answers
180 views

Touristic poi-data (api or dump) with popularity measure

I'm looking for freely available touristic (hotel, restaurants, bars, attractions, etc.) poi-data that have some measure of popularity. With popularity I mean, explicit popularity like on ...
16
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1answer
455 views

Are there torrents that contain large free spatial datasets?

I've been having a lot of issues downloading entire datasets of SRTM or ASTER GDEM2 or similar free datasets, mainly because of poor services. Does anyone know of any torrents which contain such free ...
3
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0answers
171 views

How to merge SeaWiFS and MODIS data or use other merged products?

I hope to produce a time-series for sea surface temperature (SST) and chlorophyll-a (Chl-a) for use in MaxEnt without the use of arcgis, preferring Python tools to others. I am new to satellite data ...
3
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3answers
586 views

climatic data from MODIS or other sources

I'm looking for climatic information in the form of raster like MODIS daily LST (Land Surface Temperature) data. I'm looking for other parameters like precipitation, humidity, air pressure and so on. ...
3
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3answers
610 views

Where to get Land Use data for the UK?

We're currently looking for a Land Use dataset for part of England (UK) and were wondering what datasets are out there, either free or commercial. One's we've found so far: ...
2
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3answers
313 views

How can I get a road network to run a simulation on?

I'm new to GIS and I'm asking this a bit out of desperation, but I'm trying my best not to get overwhelmed. :) I want to download a file that contains data of a road network (of what road network is ...
11
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3answers
213 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 ...
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3answers
2k 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 ...
1
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1answer
354 views

Google maps api, several moving markers using a csv file containing the coordinates

I collected 5 sets of coordinates of moving vehicles and I want to play the scene using googlemaps API showing those 5 vehicles moving. The sets are saved in a postgresql table. is it possible ? if ...
3
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1answer
1k views

Download Dataset From ArcGIS REST Service

Looking at this information page for a dataset hosted on esri.com: http://fema-services2.esri.com/arcgis/rest/services/2012_Sandy/ImageCat_NLT/MapServer/layers Trying to figure out how I can get ...
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3answers
1k 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.
4
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2answers
501 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 ...
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2answers
842 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
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0answers
144 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 ...
3
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2answers
251 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. ...
2
votes
1answer
493 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 ...
7
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2answers
591 views

Where can I find a 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? I use ArcView 9. Thank you.
3
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2answers
1k 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
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1answer
53 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
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1answer
102 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
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2answers
488 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 ...
3
votes
3answers
790 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. ...
7
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2answers
753 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 ...
10
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1answer
292 views

Open-source software for managing terabytes of different formats of geospatial data?

I have a problem that I am sure many GIS Teams or Departments have which is how to find, keep track of and manage multiple different datasets from multiple sources. I have read the responses from a ...
6
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3answers
3k 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
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2answers
76 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
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1answer
373 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
6
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3answers
3k 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 ...
8
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3answers
791 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 ...