Questions about obtaining data.

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0answers
35 views

Global address datasets for testing?

Are there any free global address datasets I can use to test my geocoding application? I'm looking for a dataset that contains residential addresses from countries around the world. I don't need a ...
2
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1answer
696 views

How to pick the coefficient in Inverse Distance Weighted method?

I'm using QGIS 1.8.0 to interpolate weather data. This is, I have a weather station located in say, A and C. With the Inverted Distance Weighting or Triangular Interpolation methods, I can ...
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2answers
125 views

Field Calculator, Conditional

I am trying to assign Value from one field of my Attribute table to a new field based on the 3d field.... The Code Block I am thinking about as follows: *def conditional (!FarmCateg!): if ...
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2answers
43 views

Linking data to road colour scheme

I'm getting started with a qgis map showing the quality of roads in my town. I have various data which create an index of 1-5. How do I link this index data to road data in a map, showing the bad ...
2
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2answers
363 views

Shapefiles for US city and Zip level

I already have the information for US states and Counties. I have the information in the Json files. I want the information for ALL US city and Zip Code information. Any leads appreciated. I cant ...
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0answers
129 views

Exporting basemap in ArcMap, similiar to export a dataset

I am trying to export the basemap in ArcMap to use it with my mosaic dataset. I need these 2 to import and work with in Unity 3D. When I am exporting my mosaic dataset consisting of DEM files, I can ...
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2answers
122 views

Why can't I open a .xls with QGIS in OSX?

I'm trying to open an .xlswith QGIS 1.8 in a Mac, I'm loading the vector layer from Add new vector layeretc. etc. the procedure works in Windows but not in Mac where I have an error Invalid source ...
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3answers
81 views

Looking for East Africa datasets

I’m working on some maps for the region, and assessing available datasets. So far I have found a few sites with interesting data, but not many. Does anyone have any suggestions about where I could ...
2
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1answer
385 views

Shapefile of European Parliament constituencies?

Is there any shapefile (or similar vector data set) of European Parliament electoral constituencies? Some countries (e.g. Germany) are basically one constituency, but others (e.g. UK) are not. Is ...
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1answer
120 views

Where can I find GIS data for the range of coast redwood?

Editor note: This question has been heavily edited in order to make it on-topic. Where can I find GIS data showing where coast redwood trees (such as the one in the photo below from the 1800s) exist ...
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0answers
29 views

Dense data set of locations for flow analysis

I want to do some analysis on real world data related to crowd flows and now I am looking for a publicly available (or at least available to academia) data set of trackings in a crowd. The data set ...
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1answer
46 views

Data about administrative subdivisions capital cities

I am looking for data about second or third rank administrative capitals in every African country (the administrative center of a country territorial subdivision), but I can't find anything close to ...
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0answers
53 views

Combining two separate shapefiles with undefined projections out of Leica

So this is a mess. When the software outputs I have two shapefiles. The projections aren't defined, but I know one is WGS84 and the other is NAD 83. The NAD 83 includes northing easting and ...
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1answer
119 views

Is there a downloadable data source for mapping out rivers with names for the whole world?

I'd like to be able to extract rivers with their names and the flow size (not direction) for the whole world. The scale I'll be drawing it at is about 2 centimeters per 10 real world km - nothing too ...
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4answers
286 views

High resolution and high detail vector GIS coastline product needed

What is the absolute best vector GIS coastline product available globally? I know of a great product for Africa (page 13 of this PDF ...
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2answers
83 views

looking for free shapefiles, communications and water infrastructures

im looking for communications layers shp format, covering all middle east. anything free? thanks also im looking for water bodies, rivers, anything related to water in the same area. any suggestions? ...
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2answers
125 views

World Land Cover data

I need to get land cover data for the entire world. I'm using corine land cover data for Europe: http://www.eea.europa.eu/data-and-maps/data/clc-2006-vector-data-version-2 but I have no idea how to ...
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2answers
47 views

Migrating several shapefiles from one server to another?

my organization is a large ESRI user and we are under going some hardware changes. My question is: Is there a way to move several shapefiles scattered across many folders (in one server) to another, ...
2
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1answer
71 views

Bathymetry dataset of Italy

I am looking for a dataset of bathymetry data of Italy. I shall use it in an application for collision avoidance of vessels coming into the port. I need to know how deep the sea bottom is at each ...
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1answer
86 views

US Voting precinct data

I am looking for a source for data to determine voting precinct boundaries in the United States. My thought is that they might be on the Census website but under a name that doesn't make it obvious. ...
2
votes
1answer
604 views

What is the highest obtainable resolution of FREE elevation data in the UK?

I am seeking closure with this question guys. I am aware of various sources of free elevation data ~30+ m, and I have been searching for higher resolution FREE data for a while now. This already ...
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0answers
32 views

Where to download US zipcode polygons? [duplicate]

I need US zipcode areas (polygons) for a web map implementation. Can you tell me where to find it (free or paid)? Thanks!
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1answer
283 views

How do I from convert from street level address to block/block group/census track?

I just downloaded block-level census data, using this answer Where to get 2010 Census Block data? It output a spreadsheet with a bunch of rows of the format GEO.id | GEO.id2 | ...
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4answers
116 views

Is there any free resource to get international raster data (other than USGS)?

I am looking for any raster database that allows free downloads of any kind of raster data pertaining to Damascus, Syria and the surrounding Turkey area. I'm trying to avoid USGS since it requires a ...
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0answers
183 views

Adding XY data from xls to Arcmap 10 [closed]

I am trying to add XY data to Arcmap 10. Coordinates are in DD but they end up in the wrong location at -1.48 0 all very close to each other (though they look like they are in the right shape just ...
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2answers
156 views

County-Level Ethnic Shapefile: United States

My professor usually provides the shapefiles that we deal with in our analyses of the United States--population, votes, etc., but I'd like to know how I can get these myself. I'd like, in particular, ...
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0answers
67 views

Where to get Annual Lightning Data (Zipcode) to use with ArcGIS for Desktop and AnyLogic?

I am building a Dynamic Agent Based Model for School and was looking for Annual Lighting Strike Data for zip codes in Ohio. I can get the state count from NOAA but want to get a bit smaller. I was ...
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1answer
122 views

Is there a source for historical shapefiles of Europe in the modern era?

Is there a source for historical shapefiles of Europe in the modern era, i.e. starting ca. 1400? I know that "where can I find historic border data" questions were asked multiple times but I couldn't ...
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1answer
189 views

Can I edit pixels values of an image with GDAL?

There is a method with GDAL (used in C/C++) to edit pixel values of a georeferenced image, maintaining the original file? Or I have to create a new dataset? My goal is to maintain ALL originals ...
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2answers
76 views

How to determine elevation of points in shapefile from second shape file using ArcGIS for Desktop?

I am a bit new to arcgis and have run into a snag. I have a series of points in a shapefile that only have x and y coordinates. Additionally I have a series of other points in a separate shapefile ...
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1answer
2k views

How to add X/Y data from Excel file (saved as CSV) on shapefile? [duplicate]

I need to add my X/Y coordinate data as points from my Excel I need help with adding points (using X/Y coordinates). Can anyone help? import arcpy from arcpy import env env.workspace = ...
1
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0answers
229 views

Google StreetView Coverage Layer

How can I get the layer of the coverage of Google Street View on the roads, i.e. the layer that appears blue when we drag the pegman on Google Maps/Earth? I need it to work in ArcGIS. Thank you.
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0answers
19 views

Programmatically download NED, Landcover, etc. data from USGS [duplicate]

What are my current options for downloading geodata (NED, landcover, etc.) from the USGS programmatically?
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4answers
232 views

Network Analyst data for the UK

Where can I locate data that can be used to calculate driving distances in the UK using the Network Analyst extension to ArcGIS Desktop 10? The data that came with my software (I'm in the USA) only ...
6
votes
2answers
185 views

How can I retrieve a list of the most used GIS software?

I would like to know how many user use a GIS software and compile a list of the most used GIS software. I thought to use the download counter of the sites but this is quite inaccurate how can I ...
4
votes
8answers
3k views

What is the best way to change a data type in the ArcGIS attribute table?

What is the easiest way to change the data type in an attribute table in ArcGIS for multiple fields? Say if the fields have been exported as a string from Excel and I would like to use them as ...
1
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0answers
184 views

Open/Free Area Code Shape Files for the US/Canada

I would like to map magicJack's areacodes and exchanges against known area codes and exchanges to create a coverage map, just to see what it would look like as compared with, say, a mobile phone ...
5
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1answer
120 views

Is there a free dataset of historical geocoordinates of ancient cities and places?

Is there a freely available dataset (csv, geojson, topojson, etc.) with geocoordinates of ancient cities, for example of the Roman Empire? Ideally with additional information like population size? ...
3
votes
2answers
158 views

Where to get school zone shapefiles?

Census.gov usually makes available the shapefiles containing school zone boundaries. Due to the US government shutdown, census.gov is down. Does anyone know where to download a recently archived copy? ...
2
votes
2answers
377 views

Retrieve data from MongoDB in OpenLayers

I wonder if it's possible to retrieve "directly" data from MongoDB to display them in an OpenLayers Map ? Maybe using some sort of API ? If you know more about this, or if you think it's a stupid ...
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2answers
74 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 ...
2
votes
2answers
113 views

Where can I find cellmast data in the UK?

I am looking for a shapefile containing the locations of cell masts that provide phone coverage in the UK. On sites like Orange, O2 etc they have an interactive signal checker ...
2
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4answers
134 views

What GIS-related services have been affected by the U.S. government shutdown? [closed]

I noticed data.gov, the US government's open data (including GIS) clearinghouse, was down, reading the following message: Due to the lapse in federal government funding, this website is not ...
2
votes
0answers
109 views

AIS Data Transformed or CVS Format

I am looking for AIS Shipping Route Data. I have not had much luck finding it in either SHP format or even in CVS format does anyone have a real good source of finding this type of data? To add to my ...
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votes
4answers
264 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 ...
4
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5answers
518 views

Where can i find Latitude & Longitude data for the coastlines of the world?

Im developing an application to print flight paths on a world map. To do this i need a dataset to describe the latitude and longitude of various coastlines (and country borders if possible) of the ...
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2answers
414 views

Adding MS Access Table as X,Y Points using QGIS? [duplicate]

Can you add an MS Access table as X,Y points in the same way you can Add X,Y data in ArcMap using: File --> Add Data --> Add X,Y Data Thanks, Mike
1
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1answer
338 views

How to open .bds file in qgis

I have a Land Registry boundary file which is in .bds (Base Dataset) format, a native file format in Cadcorp SIS. I want to open this file in QGIS. Is it possible, or do I have to do any conversions?
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1answer
243 views

I need some more information on ASTER for time series analysis

See my previous post on ASTER I have a question about that I am not sure about. So, if I wanted to analyze 10 years or so, do I need to download each ASTER file for each year (e.g. 2003 ASTER, 2004 ...
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2answers
703 views

How to extract subdataset from HDF raster?

I am trying to extract a subdataset from HDF raster. Later on, I intend to make operations such as mosaicking and extracting raster averages from the extracted subdataset. The following code is ...