Questions about obtaining data.

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0
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1answer
45 views

Hard to get my head around, generating average price for houses in each quadrant

I'm able to determine the average price of houses sold in a particular area (like the squares on image below) dependent upon postcode. Although I can generate the average sale price for a particular ...
10
votes
2answers
400 views

Is there an automatic function in QGIS to package all shapefiles in a project for transferability?

In my project, I use a lot of geodata from different directories. Now I want to give the QGIS project to a colleague (eg on a CD). Is it possible to copy the shapes from different directories ...
0
votes
2answers
275 views

How do I filter unique values using a definition query on a File Geodatabase?

Is there a way to filter unique values only from a column in ArcMap using definition query? i.e to use a Definition Query to filter out just those values which occur only once. In a Personal ...
0
votes
1answer
91 views

Where can I find GIS data about NYC's combined sewers (CSO) that's free to use?

I've located two sites that display the data that I'm looking for, but both lack exporting functions. OASIS NYC and maps.nyc/gov Otherwise I can't locate this data anywhere in a format I can use in ...
0
votes
4answers
132 views

Searching free data source: Shapes of counties worldwide

I want to create a map with openlayers, that contains a vector layer, with all "counties" of all countries of the world. "County" doesn't mean any strict political term here. I just want to split the ...
1
vote
1answer
55 views

How do I convert OS coordinates (X and Y) to longitude and latitude coordinates?

How do I convert OS coordinates (X and Y) - Eastings and Northings to longitude and latitude coordinates? For example X and Y below X (Eastings): 347904 Y (Northings): 287484
1
vote
1answer
91 views

How do I figure out the grid references (Eastings and Northings) necessary to create a circular 1 mile radius around one location?

How do I figure out the grid references necessary to create a circular 1 mile radius around one location? For instance: Grid Reference: SO 47904 87484 X (Eastings): 347904 Y (Northings): 287484 ...
3
votes
1answer
88 views

Where to get the modern Constellations as a vector File?

Does anyone know where I can get a vector version (shapefile/TAB) of the modern star constellations for the entire sky? Wikipedia has a SVG - ...
0
votes
0answers
77 views

GDAL Create( ) for a netCDF file segfaults

I have a problem with the creation of NetCDF dataset using GDAL. When I use "gdalinfo" and "gdal_translate" utilities on a NetCDF format, they work fine, but when I create a new dataset using the ...
3
votes
1answer
152 views

Export multiple layers in ArcMap 10.1 and change each layer's source to exported data

A client has requested the MXD and relevant data for a particular map. The file contains over 40 layers across multiple data frames and references multiple geodatabases and shapefiles. Is there a ...
1
vote
0answers
97 views

Looking For Free Global Bedrock Geology Data

I've searched around for a freely available global bedrock geology data set, but I have yet to find one. Anyone come across such dataset?
9
votes
3answers
195 views

Free and global basemaps for download

I'm pretty sure that a lot of people might have faced the situation where they search the internet for geographical basemaps on a global scale but can't hardly find the needed data in a short time and ...
3
votes
1answer
128 views

How do I figure out the longitude and latitude coordinates necessary to create a circular 1 mile radius around one location?

How do I figure out the longitude and latitude coordinates necessary to create a circular 1 mile radius around one location? I don't mind how many coordinates that takes. For instance: Latitude = ...
0
votes
2answers
43 views

United States City/State comprehensive database [duplicate]

I have been searching online for a comprehensive record of all Cities by State in the United States. When I searched I found some dead links to old data sets. My question is, where is the best place ...
36
votes
21answers
37k views

Are there any free administrative boundaries available as shapefiles?

After learning about the US Census's TIGERLines datasets I'm addicted to GIS :) I've working with the following layers, from the USA data Country boundaries State boundaries County boundaries City ...
0
votes
0answers
43 views

QGIS - Is it possible to Animate Polygons based on column values? [duplicate]

If you have an number of polygons with numeric data across 4 attributes/columns, you can display the data for one column but can you automatically cycle through the values for other selected columns? ...
18
votes
10answers
931 views

Common GIS data sources for developing nations. Where to start?

Not all countries have the benefit of funding/technologies for developing GIS data stores. I'm looking for a list of common GIS data sources that should be investigated when trying to build a good ...
0
votes
0answers
19 views

Point of Interest coordinate data base

Can any one help me to find data a database for Points of Interest (with coordinates) for countries in Europe? I got some data from POI PLAZA, but I am not getting sufficient data for Scandinavian ...
2
votes
0answers
50 views

Generating Tiles for Non Geographic Datasets [closed]

Excuse my ignorance if this exists. I don't think I've seen a website ever using something like this. Have tools been developed that use general tiling methodology to implement non-geographical data ...
2
votes
1answer
68 views

Why am I losing part of my raster when I reproject?

QGIS 2.0 Working with tiff raster file. Reprojections are in WGS84 Mercator. Here is my problem: I am trying to use buffers or urban areas to analyze light intensity on a raster layer. I want 30 ...
0
votes
2answers
61 views

How to programmatically fill a datetime field with datetime.datetime.now() function

I have been trying to programmatically fill a datetime field using values coming from datetime.datetime.now() function. #I create the temp shp using a URI URI = ...
4
votes
4answers
3k views

Where can I find a shapefile for the coastline of North America?

I am looking for a shapefile representing the coastlines of North America, such as something like this: http://www.diva-gis.org/gdata Does anyone have any suggestions?
1
vote
1answer
34 views

Plugins to guide inexperienced users: updating shapefiles and managing data

I am attempting to find a way to block adding features while certain attributes are not yet added. This would be useful in order to guide inexperienced clients and employees with the process of adding ...
0
votes
0answers
52 views

Looking for USA roads traffic load data

I would like to make a map of the USA Roads with traffic load data (I don't care if it updates monthly , quarterly...) in order to analyze location of customer's shops (they sell vehicle parts and ...
3
votes
0answers
79 views

Septic Tank Location Data for the Southeastern United States

I am compiling a database of septic tank locations to make some rough estimates of the magnitude of return flow to the groundwater system for the Floridan aquifer system. Ideally I would have a ...
0
votes
3answers
66 views

UK road network dataset

Can anybody guide me to a website or a source to download the Geographical UK road network data set. The data set should include the road distances, since I want to apply shortest path search ...
1
vote
0answers
35 views

How to Symbolize by creating tables containing different values (items) and with particular colors?

I work with ArcGIS Desktop 9.3. I want to illustrate my data for water sampling at different points in streams. I would like to illustrate a chart or a board for each point that would countain more ...
3
votes
1answer
167 views

Why am I unable to download Landsat 8 geotiff data from the USGS site?

I seem to have an issue with not being able to download geotiff Landsat 8 data from te USGS site. After i find the image i would like to download and proceed to download the Level 1 geotiff option is ...
0
votes
1answer
32 views

Sources for long-term NDVI datasets with coverage to west Asia?

I'm in need for long-term NDVI dataset for my research in bio-climatology, looks like GLCF GIMMS are no longer available online, any suggestions/workarounds to get the data. Thanks in advance.
0
votes
2answers
64 views

How to maintain many-to-many relationship between feature class and table with multiple disconnected editors?

I have an application coded with VB.NET (ArcGIS Engine) and its functionality is: digitize a parcel and enter information for its owners, so i have a M-N relationship between them. every parcel has ...
0
votes
0answers
41 views

Los Angeles Public Parking Lot Polygons?

So, I'm looking for some relevant data to incorporate into my map, and one of them is public parking polygons. Is there such a .shp file with these data?
2
votes
5answers
73 views

Linking demographics data to zip code, census data

Where do I find population data to link to DMA / MMA or zip code? I need to be more granular then state. Any free data source? ArcGIS?
0
votes
0answers
176 views

How to download the lulc map from Bhuvan

I need land use land cover map of entire Tamil Nadu State in India. its available in Bhuvan, but I don't know how to download it, can any one help me to get it, or is there any other source from I can ...
2
votes
6answers
3k views

Where can I find 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. ...
3
votes
2answers
120 views

Mapping Rainforest Deforestation in Peru

I'm working on a project on the the rainforest deforestation in Peru. This is related to the work of http://www.coolearth.org/our-mission but I am not affiliated with the organization. I'm hoping to ...
0
votes
0answers
60 views

Update a NetCDF file using GDAL

I have to edit a NetCDF file using GDAL in C++ code. When I try to update a subset I have this error message: ERROR 6: The NETCDF driver does not support update access to existing datasets. How can ...
2
votes
1answer
70 views

Flood records/database in Europe

Anyone knows where I can find a complete* database with the historic flood occurrence in Europe, at least since the 70's ? I am looking for some information on the date, number of floods*, amount ...
1
vote
1answer
123 views

Upload / Import to GeoServer

Can I upload a shapefile to the GeoServer Import Data page, or does it only import data locally on the server? When I click Browse to select the data to import, it seems to only browse the server ...
10
votes
8answers
9k views

Is there a comprehensive list of latitude and longitude values for cities around the world?

I'm developing an application that calculates the distance between cities using their respective Longitude and Latitude values. But the problem is where to get a comprehensive list of latitude and ...
1
vote
0answers
69 views

Dubai - Sector/Community GIS SHP Data?

Where can I download free or open access GIS/SHP file datasets for Dubai, including their respective spatial boundaries? If these might not be available, where can I find a map outlining the Sectors ...
3
votes
2answers
94 views

Is there a database/service that allows me to get the terrain type to a coordinate?

I hope i'm not totally wrong with this kind of question at this stackexchange page. Is there any sort of service avaiable that gives me (or allows me somehow to generate) the areatype to a coordinate? ...
2
votes
3answers
187 views

Where can I find a list of states, districts and tehsil names in India?

I need only names for making a chained dropdown list for users to select location correctly and submit the data. Please provide any resources. I emailed censusindia.gov.in but no reply from them.
2
votes
1answer
197 views

How can I decrease size of geodatabase “Nominatim”?

I downloaded Nominatim http://wiki.openstreetmap.org/wiki/Nominatim/Installation. The database size is more than 400 GB. The speed of geocoding is very slow. I want to increase it. For example, I ...
1
vote
0answers
31 views

How to maintain the data at XML document after changing schema with Diagramer?

After exporting XML with schema and data I did some changes to the schema with ArcGIS Diagramer. now i need to import the new schema and all the data to a new empty file GDB. what are the best ...
14
votes
4answers
8k views

Where can I find building footprint data?

Are there any sources for free and distributable building footprint datasets for major cities around the United States? Ideally, the data would also have the number of stories of each building; is ...
0
votes
1answer
43 views

Where can I find human migration data? [closed]

I am looking for data to create a flow map. I need data showing the migration of people either within a country, or internationally.
0
votes
1answer
99 views

Adding additional columns of data to CartoDB table? (in-place / no merge)

Is there any quick way to add some data to a table without either a) merging / replacing the whole thing or b) having to do it one cell at a time ? example: i have a table loaded now with the ...
1
vote
1answer
41 views

Acquiring road labels

So this is a data acquisition questions: I have data retrieved from OSM, QGIS2.0. It's a region of Qatar. Of the 13 thousand or so roads, I only pulled in about 1 thousand road names. The roads do ...
1
vote
1answer
60 views

Source for all census tables available at each census geography/summary level

I'm familiar with using factfinder2 and generally know my way around census products. But one thing that I've never found is a document that has all the tables from major census products like the ...
14
votes
1answer
493 views

How to best model GPS tracks for storage, visualization and analysis?

I am thinking about writing software to deal with GPS Tracks and Waypoints (mostly storing, displaying and calculating metrics such as speed, grade, and some simple statistics). I wonder what should ...