Tagged Questions

This tag indicates questions about obtaining data

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15
votes
6answers
755 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 ...
6
votes
1answer
1k 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?
3
votes
1answer
265 views

Open dataset(s) with centroids or other geometry for WOEIDs?

The Yahoo! GeoPlanet data is available for download but this data only includes the object hierarchies without any associated geometry. Do anyone know if there is an open source for geometry ...
3
votes
1answer
242 views

How to map our data with Google Map data

I want to add all the bus route data and create a route finding app for my country since Google map has no data about bus routes in my country but with JavaScript API i could get the shortest path ...
5
votes
5answers
274 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 ...
5
votes
2answers
728 views

Using the US census to analyze data nationally

I'm trying to make a table to relate the STFID and LOGRECNO values for the US 2000 census at the block group level, nationally. I realize that the LOGRECNO value is a state specific unique variable, ...
7
votes
4answers
165 views

North America Transit data

As far as I can tell, Google Maps does not release transit data or provide a transit API. Is there a one stop shop for transit Data: Transit stops Routes Fare hierarchy and schedule Ridership ...
6
votes
1answer
538 views

Help using the US American Community Survey Data

I want to use the USA American Community Survey Data for spatial analysis, but I'm having difficulty understanding how the survey tables are constructed so that I can relate them to block-group ...
4
votes
3answers
619 views

How can i transfer data from a spreadsheet into a 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
1answer
250 views

LIDAR data for Chicago

Is there any public or private sources of LIDAR data for the city of Chicago? Searching online has not lead me to any sources, and I am unsure how the commercial world of LIDAR works. The LIDAR point ...
94
votes
47answers
6k views

What free programs should every GIS user have installed?

I'm not necessarily referring to ESRI extensions or open-source products, but others that increase your productivity and ability to handle GIS tasks. For example, Notepad++ for writing code snippets ...
2
votes
1answer
158 views

Downloadable Super Output Areas

I was planning on drawing some deprivation maps this afternoon, but I can't find a site to download the Lower Super Output Area boundaries from to display the data. The only link I can find is to a ...
0
votes
1answer
124 views

Where to get raster files of Earth, united states [duplicate]

Possible Duplicate: Open access repository of general GIS spatial data? I'm brand new to GIS programming so please excuse my lack of knowledge. I am developing a GIS web app using ...
1
vote
3answers
574 views

How to match Census Block Groups from different decades to show percent change?

I know for Census Tracts and Blocks there are Relationship files, but what is the best way to match Census Block Groups from different decades to compare change?
2
votes
0answers
243 views

Creating a sidewalk map for a walkability survey

If I wanted to do my own walkability survey of my city, what tools could I use? I have map data from OpenStreetMap, but I have to consider that streets have two sides (which aren't always accessible ...
4
votes
3answers
725 views

Global solar radiation data

I need a solar radiation data in central Asia. Is there any global dataset of solar radiation. If someone know about it, please send to me the link. thanks a lot
2
votes
2answers
2k views

How can I export county level data in a .shp file to a text (csv) file in ArcMap?

I have a shape file created as per the answer to my previous question, which includes county level means for each county in the US. How can I now export this data in a .csv file, e.g. with just the ...
1
vote
2answers
566 views

How do I download tracks from the GARMIN GPSMAP 78 usin DNRGarmin?

I have been able to download waypoints to DNRGarmin by accessing the GPX file. However, I have only been able to view waypoints. How can I download tracks?
3
votes
5answers
849 views

When a raster is clipped to a polygon with Python, why does it still take on the extent of the entire shapefile?

I am clipping a raster image to each polygon row in a shapefile in ArcMap 9.3 using the Clip tool (Data Management) in Python with Clipping Geometry set. While the clipped raster successfully depicts ...
1
vote
1answer
179 views

Any freely available vector data in cylindrical projection?

I'm trying to develop an application in PHP to plot various points in Europe from a database, and serve them dynamically on a map. I think this should be relatively straightforward when using a map ...
3
votes
1answer
147 views

Online/offline tool for collection of coordinates for simulation purposes

Is there any good free online tool to collect coordinate positions given, say a trajectory; or a polygon. For example, retrieve all coordinates between two points, every 500 meters. Many thanks.
3
votes
5answers
655 views

Where to find a polygon database of golf courses in the US?

Does anyone know where I can find an accurate polygon database of all golf courses in the us?
1
vote
2answers
292 views

Are there sources for obtaining pre-made KML data from Google?

I have been asked to investigate methods for obtaining KML files. All I know so far is that it is a format based on XML that Google uses to format their maps (or the metadata). However, are there ...
3
votes
1answer
546 views

Keeping attribute data when exporting KML to feature class

I am working on updating kml files into an mxd. I am able to use the conversion tool to change each KML to a layer file, but I am unable to keep the original kml attribute data. When I export point ...
7
votes
3answers
448 views

How can I make a county-level shape file from a set of points at 30 x30 km spacing?

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 ...
5
votes
1answer
288 views

Geocaching - XY coordinates

I was wondering what is the easiest way to get XY geocaching coordinates (by a particular Area of Interest (AOI)) data in a spread sheet format that I could covert to a GIS layer? On the ...
4
votes
2answers
489 views

Indian Latitude Longitude values

I am in need of around 10000 and odd Indian latitude and longitude values for my openlayers project. I have to load them in a postgis db. so a sql file or atleast text file would be better than a ...
8
votes
2answers
513 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 ...
5
votes
2answers
262 views

How to deal with multitype data sources in QGIS?

Today I was trying to import a DXF to Qgis, the result is that qgis displays everything LINES and POINTS but it only displays options for the POINT objects. When I try to export to a shapefile, it ...
6
votes
3answers
577 views

Obtaining *rendered* OSM data

I'd like to produce a simple walking map with some points of interest. Ideally, I'd like to use the rendered OSM data, as you can get from the page. Using the QGIS OSM plugin, I can only download a ...
8
votes
1answer
126 views

Radio station coverage areas for the UK

In the US, the FCC (Federal Communications Commission) publishes transmitter data about TV and Radio stations, including information about their respective service area boundaries. Using the ...
10
votes
2answers
2k views

Data types for storing lng/lat in MySQL

I'm storing a large list of lnt/lat points in a MySQL database. At the moment these are projected points for the UK in M, but in the long term I would like to make sure that I can store the ...
1
vote
2answers
746 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?
9
votes
3answers
3k 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.
1
vote
5answers
3k views

How to convert a double field to a string?

I would like to convert a column in a spreadsheet from a double to a string so I can join the data with a shp file. What is the easiest way to do it?
1
vote
1answer
139 views

Need of an imagery for Mexico

I am doing Rapid Watershed Assessment for my agency and I am responsible for the Southern New Mexico and northwest Texas. I have 2 NAIP added to my ArcMap already and using it with the "Add Image ...
2
votes
1answer
129 views

How to refine queries using GeoNames

The people on this site have been wonderful in helping me query a list of the worlds parks with something like this query: ...
5
votes
2answers
165 views

How to get geographic information for American and world parks and cities?

I am working on building out park data for my web site. My site is about hiking, so I want to get a list of parks and cities in the world. Is that possible? Where can I get/download/see such ...
6
votes
4answers
109 views

Identifying geographies that match certain climatic profiles through GIS

A certain post-haste project has arisen, and I would like to put this question to the collective mind of GIS.SE for ideas and references. The long and short of this research is trying to find roads ...
5
votes
3answers
442 views

How do I render data quicker in Arcmap?

Is there a way around to speed up the data into ArcMap ? When I converted the raster to polygon and some data would load up quicker and some other load slow. I am wondering if I could add the spatial ...
3
votes
2answers
721 views

Fastest way to create an ESRI Grid and populate cell values?

In terms of processing speed what's the fastest way of creating and then adding values to a raster? The values will originally come from ASCII files which can be about 500MB in size - ideally I ...
13
votes
4answers
4k 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 ...
11
votes
2answers
152 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 ...
5
votes
2answers
334 views

Visualizing and organizing traffic flow data for an intersection

I'm looking for advice on how to organize data that describes traffic flows through several unconnected intersections over several years. I'd like to learn about the most basic representation of this ...
7
votes
4answers
1k 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 ...
19
votes
6answers
475 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 ...
3
votes
2answers
158 views

Data storage shared with co-worker [closed]

I would like to ask anyone out there who knows of a good free website that allows me to upload my gis data files to co-worker. Each project I am working on are quite large and would need to upload 1 ...
1
vote
1answer
674 views

Converting total station points to cartesian coordinates

I have a set of points which have been downloaded from a total station instrument. These data points are already in excel sheets and the issue now is how to convert these points (easting, northing and ...
4
votes
3answers
433 views

Australian Topo Map GeoTIFFs

Does anyone know if Australian topo map GeoTIFFs are made available anywhere (preferably for free)? LINZ makes them available in New Zealand - http://www.linz.govt.nz/topography/topo-maps/index.aspx ...
8
votes
3answers
374 views

Data source for determining postal codes given location?

What is the best data source for determining international postal codes given a latitude & longitude?

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