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Questions tagged [data]

Questions seeking data (except commercial) recommendations are usually better asked at the Open Data Stack Exchange

2
votes
1answer
77 views

Where can I obtain Water Virtual Flow Segments for Minnesota?

This is a cross-border task. I already have this data for Ontario, Canada but I also need to complete the model for a large lake that is essentially split in half between the two countries. ...
0
votes
1answer
442 views

Why does collapse dualline to centreline only create an outline of the dataset?

I'm trying to collapse all divided roads in one centreline and to integrate any other spurs or errors in the dataset to create one set of centrelines. I have used Merge Divided Roads but it leaves a ...
7
votes
1answer
416 views

POSTGIS workflow for cleaning up a noisy dataset

I have a conservation dataset that im trying to simplify for the purpose of using it as a GML layer in openlayers, ie reducing the total shape and node count to quite small. The data has issues: eg- ...
11
votes
1answer
464 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 ...
3
votes
2answers
205 views

Data needed for wolf habitat/potential distribution in Pacific NW region

Hello fellow GIS’ers, I am assisting a nature writer with maps for a book he’s writing on wolves in the Pacific NW (Titled “Wolves in the Land of Salmon”). I’m writing therefore in the hopes that ...
2
votes
1answer
830 views

Using Natural Earth Dataset As WMS

This Question is about Natural Earth Project. I tried to do some research about creating my own WMS and came across this project. The web page says : Natural Earth is a public domain map dataset ...
3
votes
2answers
383 views

Looking for (free) WMS of surface waters of Europe

Do you know any WMS with hydrographic map of Europe? Especially I am looking for map with surface waters of Europe
0
votes
0answers
66 views

Where do I find information where I can download the legislative mapping data [duplicate]

Possible Duplicate: Where I can download legislative mapping data? It is a collection of files downloaded from aristotle to map Zip to District data. Among the files are 1. Census Code (...
5
votes
1answer
168 views

Vehicle travel data for the USA

I'm looking for vehicle travel data in the USA - at any spatial resolution smaller than the unit of a state, and ideally at a city level. I'm interested in daily, or weekly data and also any ...
3
votes
1answer
366 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 ...
6
votes
2answers
2k 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, ...
6
votes
1answer
1k 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 ...
7
votes
4answers
222 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 (...
2
votes
1answer
221 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 ...
1
vote
1answer
95 views

Online resources for creating shp files performing basic GI functionality

I am looking to build polygons, based on files containing a grid of points. The representation of the polygon would be an aggregation of the points. As the end wares are ESRI, I was wondering if ...
2
votes
0answers
795 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 ...
1
vote
1answer
224 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 ...
4
votes
2answers
1k 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 link....
5
votes
1answer
646 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 Geocaching....
3
votes
1answer
2k 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 ...
5
votes
2answers
297 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
3k 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
287 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 ...
11
votes
2answers
245 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 (...
6
votes
2answers
1k 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 ...
8
votes
3answers
519 views

Data source for determining postal codes given location?

What is the best data source for determining international postal codes given a latitude & longitude?
0
votes
0answers
407 views

Extract Points from a Shapefile [duplicate]

Possible Duplicate: Shapefiles to Text I have several shapefiles from which I need to extract all of the points, with all of their attributes, including position coordinates. I only have access ...
3
votes
1answer
958 views

Complete lookup table for German admin codes in Geonames data? (admin4_code)

I am working with both the postal and Geonames data for Germany. I noticed that while the Postal data may be used as a lookup for ADMIN_CODES 1-3 (ADM1,ADM2,ADM3), it does not mention ADM4 at all. ...
1
vote
2answers
2k views

How can I insert new records to an ArcSDE feature class from a view in ArcSDE

I am wondering how I can both insert new records from a view to a feature class and update data that may be newer in the view than in the feature class. I have been fumbling around in modelbuilder and ...
10
votes
6answers
567 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 ...
4
votes
1answer
1k views

Configuring WMS from a MSSQL data source with MapGuide Open Source

I've having trouble configuring WMS out of MapGuide Open Source. Here's what I've done so far: Installed MapGuide Downloaded MapGuide Maestro Created a "feature" in Maestro that connects to MSSQL2008 ...
4
votes
2answers
100 views

How can cities in a Metropolitan area share data collection costs?

Does anyone have any stories to tell (good or bad) about attempts to share the costs of data collection among cities/agencies in a metropolitan area? Aerial imagery is a primary example, but would ...
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 ...
2
votes
1answer
300 views

How to specify which component of a file is imported when using a PluginDataSource?

In my application a plug-in datasource has been implemented to read specifically formatted files containing a mix of data types, including geometry in the form of polygons, lines, and points. Using ...
5
votes
2answers
572 views

Data ETL workflow optimization

I have a legacy workflow that I would like to optimize and automate (at least partially). The current workflow goes like this. I receive a MS Access .mdb file containing a single table. This table ...
4
votes
1answer
2k views

UK cities boundries in Ordnance survey

Are there any city boundaries of UK cities in the Ordnance Survey?
15
votes
8answers
601 views

Are there sources for more esoteric data than streets worldwide?

Related to this question. For example, things like: political world map (as polygons) cities of the world geolocated climate data (avg temp, humidity, rain, as polygons), earthquakes, hurricanes (as ...
16
votes
4answers
810 views

How to handle TIME in GIS?

Is there any way or any idea on how to handle Time attribute in GIS? For example, which are the ways to specify that an object is at a place at a given time interval and them it is in another place ...
5
votes
2answers
2k views

Data organization strategies for .csv and .shp

I'm organizing a large amount of data for a project and the data is stored in .csv format, with a code to relate each row to a polygon in a .shp. I was planning on converting the .csv data into .dbf ...
7
votes
5answers
1k views

Are the Canadian National Topographic System (NTS) maps available freely online?

I'd really like a seamless service of the Canadian topo maps, similar to ArcGIS Online USA Topographic Maps, http://www.arcgis.com/home/item.html?id=4ee3622f0bfd41eea55ffa83aaf31a9f If there is no ...
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 ...
3
votes
2answers
389 views

Where I can find real world data for triangulation? [duplicate]

I want points for practicing triangulation algorithms. Just points with coordinates [X,Y] and elevation [Z] of real world terrain. I can use Google Maps Elevation API, but there is no method how to ...
9
votes
2answers
1k views

GIS Layer of USA State Court Jurisdiction Boundaries

Does anyone know of a national layer? Edit: Sorry for the delay in clarifying. I am looking for all courts (district, circuit, municipal, Superior, etc.) depending on the terminology used for the ...
5
votes
2answers
3k views

Are there any sources of UK building footprint data available?

I noticed that there's another question related to this topic, but the question was related to US data. I'm looking at the possibility of producing an interactive map for a UK based city, which ...
8
votes
5answers
2k views

Data Source: Address ranges for every block in NYC

I'm looking for data that defines the address ranges used on NYC blocks. On this screenshoot you can see google has noted the first addresses on each block of West End Avenue and 92nd/93rd/94th st. (...
3
votes
2answers
174 views

Map source for iLife '11?

The new iLife has map functionality, what's the source of the map data used? Further pictures on engadget, which show a city-level view.
6
votes
1answer
289 views

What is the best way to store Flickr's Shapefiles Public Dataset in SQL Server 2008?

I'm wanting to import specific locations from the Flickr Shapefile Dataset into SQL Server would like to know what is the best way to store the data in SQL Server 2008? Link the the 1.0 Dataset: http:...
3
votes
2answers
1k views

Using openlayers to render UK National Grid maps

Is there a way I can use Openlayers with a 1 pixel = 1m/2m/4m OS Grid map at high resolutions (i.e. OS Street View), but switching to a Mercator projection when you zoom out (i.e. for Google Maps or ...
1
vote
2answers
2k views

Where can I get UnitedStates.gdb file

I am doing this tutorial http://help.arcgis.com/en/sdk/10.0/arcobjects_net/conceptualhelp/index.html#/How_to_geocode_a_single_address/00010000038r000000/ but it requires the following file: ...
3
votes
5answers
2k views

Ways to load OS VectorMap data

Us lucky fellows in the UK have been able to access public geodata from Ordance Survey under an open licence since April this year. Some of the datasets, including VectorMap, are broken into 100 ...