Questions about obtaining data.

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17 views

how do calculate nearest point in earth map with coords

I am having trouble calculating nearest point for another point with earth coordinates. I am particularly interested in calculating the intersection of linestring vector with earth coordinates. I'm ...
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1answer
25 views

GPSbabel: how do I define the layout of my input data

I have collected GPS data on a journey by extracting it every second from the $GPRMC NMEA sentence, with each reading saved in the form: time,latitude,longitude,speed,direction a typical couple of ...
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1answer
23 views

How to change the data type of columns of a vector layer in qgis?

Is it possible to change the data type and attributions of data in qgis? Almost all of the variables which contains numbers should be changed in all of my vectors. In ArcGis the data type is ...
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0answers
16 views

Import dataset from ArcSDE to local folder using ArcObjects?

Am new for ArcObjects. I need to copy the listed Data set from ArcSDE server to local Encrypted folder.
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0answers
29 views

Global temperature maps

Does anyone please knows where to get global surface temperature maps, yearly? I need separate map for each year from 2002 to 2012 shows the average surface temperature over the globe, would be great ...
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1answer
32 views

USPS Zip Code Zone Information

I'm trying to display USPS Shipping Zone information but the section of the USPS site I used to scrape this information from has been broken for months and I'm wondering if anyone knows another way to ...
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2answers
143 views

Where can I purchase Points of Interest? (USA)

I have thousands of POIs with addresses and they are geocoded. The lat longs are on the road. I have Tele Atlas POI data, but it also shows the locations closer to the road. Is there any ...
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2answers
42 views

Where do I get Elevation Data for Scotland?

So I am new here and I arrived here because I have been searching for quality elevation data for the entire Scotland but I have not succeeded yet. Kindly help if you know where to get the data Raster ...
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1answer
53 views

ArcGIS Terminology and Data Types

What is the difference between a "Feature Class" and an "SDE Feature Class"? Or a "Table" and an "SDE Table"? When browsing data in ArcCatalog, hosted on the same enterprise gdb, I see these data ...
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1answer
31 views

A way to generate random/fake sensor data

First, what I'm trying to achieve is to implement a gis-based platform in the context of a smartcity. So basically I'll need many layers, some are static like gaz,water circuits, hospitals ...., some ...
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3answers
6k views

Best 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 ...
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4answers
2k views

Data naming convention - starting with a number

My company uses ArcGIS and has a project and data file naming standards in place and (for the most part) followed. Something that has always bothered me about he naming standards is that it mandates ...
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0answers
18 views

Google Maps Data

Is it possible to obtain a dataset of all search results in a google maps search? For example: if I want a list of all gas stations in Chicago, complete with addresses, store name, latitude-longitude ...
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1answer
50 views

Seeking shapefile of traffic lights with time sequence information anywhere in world?

I am looking for a shapefile of traffic lights that contains the time sequence information. As in how many seconds the green, red and yellow lights are on. It could be a point layer of street lights ...
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1answer
30 views

Downloading data sets during installation

I can successfully install QGIS 2.8.1 on a Windows 7 machine but I get an error when downloading the Carlina, South Dakota and Alska data sets. The error message is http/1.0 504 Gateway Timeout. Looks ...
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2answers
422 views

Cannot register a Feature dataset

I am having an issue trying to register a dataset, and being able to edit a featureclass within it. I am new to SDE so please bear with my explanation. I read online you cannot register a feature ...
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0answers
12 views

Where can I find wind maps for the Mediterranean/Middle East?

I do debris modeling, sim, and analysis for missile interceptions. I have been looking for hours and I can't seem to find the information I'm looking for. So my question is... Where can I find ...
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1answer
30 views

How to export WDPA dataset to text and shape files?

Please have some patience with me as I am not a GIS professional at all, I am merely trying to work with some of the file formats. Let me first explain what I am trying to accomplish: The WDPA (World ...
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6answers
2k 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 ...
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0answers
32 views

Best band ratios in Aster data?

I am interested in the determination of lithology by using ASTER band ratio. I try to a lot of band ratio (for example RGB 4/8, 4/2, 8/9) but I didn't get a good result. Do you think what is the best ...
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2answers
40 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.
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1answer
49 views

Want a good database that has precise location coordinates (longitude & latitude) [closed]

I am searching for a good Excel spreadsheet database in tabular form that has the following: 1) It can be related to anything, eg. monuments of a country, tourist places, wildlife, cities; anything ...
0
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1answer
35 views

China GIS files

Where can I find GIS files (anything like SHP, KML/KMZ, GeoJson/TopoJson etc) that match China's county codes from http://www.stats.gov.cn/tjsj/tjbz/xzqhdm/201401/t20140116_501070.html ? I am ...
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1answer
55 views

How can I identify lines that intersect a certain raster layer area?

How do I identify certain roads ( of a line shapefile) that intersect with a layer that is produced from the reclassify tool (for raster data)? I am trying to identify which roads specifically are in ...
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0answers
64 views

What reliable sources (paid or free) exist for fossil fuel infrastructure data?

I am trying to find GIS data for various types of petroleum and natural gas infrastructure (pipelines, refineries, gathering lines, pump stations, etc). I've found quite a few sources, mostly ...
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7answers
5k 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. ...
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1answer
610 views

How to create tiles with points from MongoDB?

I have a (potentially) large data set stored in MongoDB. Each record is just lat, lon and some float-point value. Each pair of lat and lon is unique, but the whole set is not covering the Earth, there ...
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1answer
36 views

QGIS Categorized Symbology based on joined table

I am trying to create categorized symbology for a data layer. The column that I would like to base the categories on is a result of a table join. For some reason it isn't working. All of my polygons ...
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4answers
1k views

Where to get Land Use data for the UK?

We're currently looking for a Land Use dataset for part of England (UK) and were wondering what datasets are out there, either free or commercial. One's we've found so far: ...
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2answers
90 views

California State Parcel Data

I am looking for California state parcel data such as owner name, no. of stories, year built etc., for each parcel. I can get to the level that I can browse them in property appraiser site but don't ...
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11answers
1k 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 ...
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4answers
1k views

Free radar (SAR) satellite data

I'm looking for free (non-commercial use) sources of radar (SAR) satellite imagery. Does anyone know of sources?
2
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0answers
52 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 ...
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1answer
23 views

Where can I find global spatial data for net primary productivity (NPP)?

The title is more or less self-explanatory. I have looked and looked but have met various road blocks. Does anyone know of a reliable source for such data? Thanks!
5
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1answer
668 views

How to extract bounding boxes of cities from OSM?

For simple geocoding purposes I want to extract all cities from a single country of openstreetmap. They only queries I want to do are: ZipCode -> (List of) BoundingBox of City/Village ...
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1answer
27 views

London pre 1965 metropolitan boroughs

I am looking for polygons of the London Metropolitan Boroughs before 1965. kml or kmz would be best as I am working with googlemaps. But other shapefiles would be much appreciated as well.
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1answer
159 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)?
1
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1answer
42 views

Linear Reference initial datasets

I am trying to work with Linear Reference system as I found It in ArcGis website: http://resources.arcgis.com/en/help/main/10.1/index.html#//003m00000002000000 But I'm losing something in the ...
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4answers
5k views

Converting 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
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1answer
38 views

non alignment of base layer and other vector layers

i'm sure you've encountered this problem repeatedly. i've tried all different methods. Enable on the fly crs transformation. go to settings and options to use crs data. go to properties and change ...
1
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2answers
212 views

Rasters added to mosaic dataset only display at large acale

I have a set of 357 rasters in .jp2 that I've added to a mosaic dataset. All but 7 of them display properly, but the 7 only display at larger scales, around 1:6500 and under. I've tried adding them ...
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1answer
30 views

Error in executing commands in GRASS GIS

I'm using Grass 6.4.3RC2. I have a problem because when I execute the command: r.radcov csv_file=cell_list_hataDEM_umts_amc_testTEST.csv dem_map-AlbSRTMdem@PERMANENT clutter_map=AlbClut@PERMANENT ...
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0answers
52 views

Unable to save edits. Raster dataset already exist

When I edit my attribute table then I try to save edits but one error mesage appear on my screen "Unable to save edits. Raster dataset already exist". I really wonder why this error message appear?
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0answers
26 views

ITV zone shape file

Where can we get ITV zone shape files for the UK? I need to create filled maps using this data. thanks for your time.
1
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1answer
38 views

Source for cloud cover map layer over UK

I'd like to add a layer to display historical data on cloud cover in a Leaflet project I'm currently working on. This is specific to a given day in 2012 for a city in England, and ideally I'd like to ...
1
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0answers
49 views

Google API for Boundary coordinates

Is there any Google API (or any other) which can provide boundary information (i.e. Lat, Lng) for a particular location. Location can be a city, district or a region with in a city. For Example Dammam ...
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0answers
15 views

Adding a layer can sometimes load raster footprint!

Just trying to refine my ArcObjects code to add a layer into ArcMap based on passing the fully quailified (String) name of the layer - problem is, if it's a raster, it will load in the vector ...
2
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2answers
76 views

How can I find GPS coordinates of the geographic center of US counties?

How can I find a list of the GPS coordinates of the geographic center of each US county?
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2answers
737 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 ...
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0answers
22 views

Lat/Long attribute to Trimble Pathfinder Data Dictionary

Is it possible to add beginning and end point lat/long attribute to Trimble Pathfinder Data Dictionary before collecting data in the field?