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3
votes
4answers
8k views

How to convert WKB to WKT?

how can i convert wkb to wkt form ... i stored coordinates in wkb but now can it will display to use in wkt form
1
vote
8answers
8k 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. ...
1
vote
1answer
4k views

Looking for vector data for the country Turkey

specifically roads, railroads, and rivers shape files.... no cost would be nice, but it needs to be more detailed and accurate than mapcruzin's free data. Something under $500 would also be ...
7
votes
3answers
655 views

Making county-level shapefile from set of points at 30 x30 km spacing using ArcGIS for Desktop?

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
3answers
13k views

How to import info from mdb file into a project?

I need to import info on a QGIS project. The info are in a MDB file (population, mean age, number of cars and so on: one record per region) that is written to be connected with a region shape from an ...
5
votes
1answer
4k views

Exporting .jpg files from data driven pages in Arcmap

I have generated about 90 maps through data driven pages(ArcGIS 10.0). I now want to export them as .jpg files in either landscape or portrait format. I tried python but it is not working, it worked ...
0
votes
4answers
535 views

Illinois Legislative Zip to District Match Data Set

I have the Zip +4 for the about 650 areas and I need to find Illinois Senator and Rep code, address, name. How can I solve this issue. Did anyone solve this issue using any vendor data? We do not want ...
5
votes
2answers
707 views

Locating shapefile of European railways for goods transportion?

We are trying to make a project about European goods trade so we need railway data in shapefile format. More specifically, we are trying to find the potential of mine products being exported from ...
5
votes
6answers
2k views

Can I download the entire NRCS SSURGO database?

I am interested in downloading and using the entire USGS SSURGO database. The California Soil Resource Lab provides instructions on working with these data in R, but it starts with the assumption ...
3
votes
1answer
8k views

How to add points to a point vector layer - QGIS

I have a point layer with multiple data points in QGIS, but I want to add some extra data points to it and adjust some info that we missed because the ground was wet and we needed to go around it. I ...
2
votes
2answers
329 views

PLSS shapefiles - alternative to geocommunicator.gov?

The BLM's website geocommunicator.gov is down and I'm wondering if anyone knows of a second source for PLSS shapefiles. Any help is greatly appreciated.
2
votes
1answer
325 views

Seeking shapefile of Indian electricity grid?

Does anybody know where I can find a shapefile of the major components of the Indian electricity grid? Ideally, I'd get transmission/other high-voltage lines, substations, generating units, and ...
1
vote
1answer
1k views

Where to Dowload Village layers for India with census 2011 information?

Does anyone know where I could download a layer of all villages in India together with their populations (hopefully from the 2011 census)?
0
votes
2answers
206 views

Watershed layers with names for each one for Europe or Sweden?

I am working on freshwater species and I would like, make a list of each watersheds used for each species. So I am looking for a watershed maps which contain name of the watershed. I found some good ...
16
votes
4answers
672 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 ...
13
votes
6answers
2k views

What iOS (iPhone/iPad) app from the App Store can I use to collect data?

What iOS app from the iTunes App Store can I use to collect data (mainly points, perhaps photos) and later import them into my GIS? I am mainly interested in an out-of-the-box solution, not develop ...
12
votes
2answers
3k views

Google Fusion Tables vs Amazon Web Services: which is better for GIS data?

What are the pros/cons for storing storing spatial data in Google Fusion Tables versus Amazon Web Services? Factors would include: Cost, performance, ease of update.
9
votes
4answers
3k views

OpenStreetMap Neighborhood Boundaries

Is it possible to download neighborhood boundaries from OpenStreetMap? I see on maps that they often indicate neighborhood names; is there a way to retrieve their coordinates and boundary polygon ...
16
votes
3answers
1k views

What is the wire format for Google's new vector map tiles?

Google recently released new vector cartography for their mobile maps. I'm curious if anyone here has any insight into the wire format they use for transmission? I've experimented with a few formats ...
11
votes
6answers
3k views

Where can I get neighborhood boundaries?

Besides Zillow's creative-commons licensed neighborhood boundaries shapefiles, what sources of neighborhood boundaries are there? Not just in the US, but all over the world. Free/open source is ...
10
votes
3answers
465 views

PostGIS (2.0?) - Native Versioning of the Datastore

I recently have been surprised to see there are not too many solutions at all discussing the best methods of versioning datastores which are made available for editing. I am looking for a robust, ...
9
votes
3answers
364 views

Costs and requisites when hiring aerial LiDAR survey [closed]

My organization is considering hiring a company to capture new LiDAR data to help with current stormwater issues that we are currently experiencing. I am a GIS analyst that has been assigned with this ...
7
votes
4answers
8k 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)?
12
votes
3answers
2k views

What is a good taxonomy or naming convention for files and folders containing GIS data?

My company has collected about 30 TBs of GIS data over the past 8 years, and I always find myself asking the following questions: What type of data do we have for a given geographic area? What are ...
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 ...
10
votes
4answers
6k views

Downloading SRTM data

Is there an easy way to mass download SRTM data? The data is published for download here, but it's sliced into thousands of small files, and I don't see an FTP option for more efficient ...
9
votes
10answers
11k views

Where can I get pointcloud data? [on hold]

Is there any freely available pointcloud data? I'm especially interested in dense clouds of small areas(5m to 100m radius) but anything else would be fine too. Edit: I've found that these pages ...
7
votes
4answers
436 views

Automatic matching of two street networks

I'm faced with the problem of matching two street networks. I have these two differently sourced networks. The links in each network can be segmented, i.e. there is not necessarily a single whole link ...
5
votes
3answers
486 views

What kind of datasets are necessary for geomarketing applications?

If you would have to create a data base for geomarketing applications yourself, what kind of datasets would you purchase/collect? The first goal would be to find new store locations. Another would be ...
3
votes
1answer
2k views

Good examples of interactive maps and associated technologies?

The display of maps and data within an interactive framework is becoming more prevalent online. I'm thinking beyond merely the ability to pan/zoom/control layers, but more along the lines of ...
16
votes
2answers
2k 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 ...
12
votes
5answers
11k views

Source for high-resolution satellite images free/low-cost?

I am doing a household survey in Kenya, and I need to ensure that my survey team visits every house within a given area. I've been going to google maps and right-clicking on roofs to get coordinates ...
11
votes
2answers
1k views

Where is Wikipedia's coordinate information stored, and how can I retrieve it?

Background: I'd like to add icons to my map showing locations which have Wikipedia entries. The WikiLocation API is a great resource for determining Wiki entries near an XY location, but it has ...
10
votes
12answers
2k views

canvec: why so quiet? where are all the users?

It has now been a little over 3 years since Natural Resources Canada released CanVec, a national coast to coast to coast spatial dataset at 1:50,000 or better nominal scale. In the interverning time ...
5
votes
2answers
264 views

Worldwide population density data not grouped by country?

Are there any data sources available, preferably freely (but not necessarily), which show population density without regard to country or constituency boundaries of any sort? I'd like to analyze a ...
3
votes
3answers
470 views

Statewide (and more) Address Point data source

I am seeking a data source for a statewide address point layer. I do not need resident or business information at these addresses; I just need the validated structured addresses (preferably with ...
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 ...
2
votes
4answers
5k views

MySQL database of bars, pubs and restaurants in the United States and maybe Canada?

I am mostly seeking Bars and Pubs but Restaurants are a very nice bonus. I need a database with zipcode, city, state, longitude, latitude, establishment name, establishment contact information, maybe ...
8
votes
5answers
1k views

Where can I find annual temperature data for every city and town in the US and Australia?

Where can I find yearly annual averaged temperature data for every city and town in the US and Australia for a heatmap? links are good
7
votes
2answers
5k views

postprocessing GPS coordinates with RINEX data to improve precision?

Im doing some mapping for OSM in my region and I am curious if the precision of tracks from a GPS Receiver can be improved if they are post processed with RINEX data. The tracking is done with a ...
6
votes
1answer
829 views

Russian GIS Data

Which companies are the best suppliers of vector, geocoding, imagery, and POI data in Russia? Which companies provide a complete service (which includes the above data types and also routing, ...
5
votes
2answers
403 views

Is there hydrologically correct water-course data for Africa

I was wondering if there are any hydrologically correct river-channel data available for download for Africa? By hydrologically correct, I mean the topology should be correct. Connected river ...
5
votes
2answers
8k 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 ...
4
votes
3answers
3k views

Using CityGML data with ArcGIS Desktop or QGIS?

I'm looking for advice on how best to use the CityGML data-structure and GIS (preferably ArcGIS/QGIS). I've read through their website and wiki and saw a list of software here that can be used to view ...
3
votes
1answer
522 views

How does a newbie get household income data based on address to the block level?

I am beginning a research project and need to find a way to access the census data about household income. We need it at a closer level than by zip code since income varies a lot by zip code in our ...
3
votes
3answers
954 views

Sites with recreational shapefiles for United States?

Do you know of any sites that I could find some recreational shapefiles? An example would be shapefiles of golf courses, ski resorts, or maybe baseball fields in the United States?
2
votes
1answer
1k views

Seeking shapefiles of business locations [duplicate]

Does anyone know where to find shapefiles of businesses such as grocery stores or gas stations?
1
vote
4answers
2k views

export 3D data dxf file

I'm trying to export a DXF file from Qgis1.8.0 Lisboa and can not have a 3Dfile in Autocad! Or micristation. It results always in 2D file. How can I export height data from a shape file in Qgis? ...
11
votes
2answers
191 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 ...
8
votes
6answers
460 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 ...