Geolocation is a means to discovering the physical location (in real-world geographic terms) of an object.

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How can I get one neighbourhood name using address and/or postal code?

this is my first time here. I just need to get a neighbourhood/locality name, to get it I have the address and postal code (all over Argentina). -no polygons needed- This is to change a background ...
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60 views

Unable to warp HDF5 files

I have numerous HDF5 files(.nc) which I need to batch process warp using one of the gdal utilities gdalwarp. When I tried to warp the files an error occurred: INPUT: gdalwarp -geoloc -te 109.975 ...
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31 views

Finding proximity to waters, such as lakes, rivers, streams, the oceans

At Alz.care, we are working to detect whether someone who is living with Alzheimer's is nearing a body of water, because of the very high risk of drowning for persons with that neurocogntive disorder. ...
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19 views

QGIS geolocate a DBF file with another point layer by matching field

I have a DBF table and a SHP with points. I want to geolocate the DBF file using the points layer. Both match in a field called "unificationstring". I know how to do it in postgis but how can this be ...
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66 views

How can I geocode American rural routes and box numbers?

I am working on a project where users fill out an online form with address information and a Google Map centered at that address is displayed. It works fine for traditional addresses (e.g. 123 Main ...
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11 views

Set of intersection points in trilateration / multilateration [duplicate]

Like in this post I will get a set of points (3 or more) with latitude, longitude and distance (in KM) information to find out the target location. A distance could be about 500 KM. The circles ...
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48 views

project hdf file with geospatial_lat and lon in batch process

Is there any way that I can do a batch process in projecting hdf files wherein I could get and include only the geospatial_lat and lon in the batch script since every hdf file have different ...
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214 views

Geofencing: Query if a POINT is within a POLYGON

I am trying to use the following query to search if a point is within a defined POLYGON (aka a geofence I want to define): ...
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2answers
65 views

How do some companies receive GPS data from vehicles if GPS's can't send any data?

I know that some companies offer tracking services for vehicles such as live GPS tracking they can access any time, but as you can't use the GPS protocol to send any data i wonder how the do it... I ...
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132 views

CartoDB detecting user location - putting dot on the map

I have a CartoDB question. Long story-short, we have a project we are piloting in Rio das Pedras, Brazil, a favela near Rio. We have sampling points, working on adding Fulcrum photo uploads and ...
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48 views

Using LocateButton with Tracking enabled

I have been using esri's LocateButton on a map for almost a year now and it works well. I'm now trying to enable the Tracking option to create a moving map for staff and I can't seem to get it working ...
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95 views

How to create a custom input text in a CartoDB

What is the best way to modify the searbox listener searchbox in the CartoDB map? I would like to disable the default event listener for the CartoDB searchbox and first to execute my own listener and ...
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42 views

I want to trace a gps device

I want to create a device that should transmit its location to a server using anyother medium other than GSM. Bascially I need a tracking device which i could give to my worker and he goes to a forest ...
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115 views

Yandex Navigator / Maps - Determining user location

Kindly redirect me to a more appropriate forum in case there exists one. I am an active user of Yandex.Navigator App (available for all kind of mobile platforms). Whenever I open the App, even though ...
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2answers
788 views

Does iOS know the phone's location solely from cell tower, i.e. without GPS data?

Question Does the iOS operating system know the phone's location even if one could turn off the iPhone's built-in GPS module or if it was broken? Elaboration What I understand I understand that ...
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75 views

Looping a location-allocation problem in ArcMap's Model Builder

I have developed the model below in which I iterate through a series of values for a variable in the Location-Allocation type of problem. The variable is the number of facilities to solve. The model ...
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91 views

Create Archimedean spiral with geographic coordinates

I don't know if this is the right place to ask but here it his. I want to create an Archimedean spiral based in some location. Lets say I have this set of geographic coordinates (48.860770, ...
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125 views

Python Geolocation Software to Filter Cities By Population Within a Radius?

What I'm trying to achieve I want to enter a US city/state or zip code value. Then enter a radius (ex: 30 - would stand for 30 miles). Then I enter a minimum population (ex: 100000 - would tell the ...
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79 views

google maps float pin in center and return location

I would like to keep the pin constant in the center of google maps while the user can move the map and zoom around and whenever the map is untouched the current gps location of the pin (in the center ...
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32 views

Understanding the error term

I have some (mobile) location data from a vendor. For each user and timestamp, there are three columns: lat, long, error. I "guess" that the error means that the user is located within a circle with ...
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1answer
47 views

Save millions of points in the server side

I have asked a similar question about millions of points a few days ago:Display millions of points in the browser. It focused on how to display these data in the client(browser), however I think it ...
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3answers
227 views

Display millions of points in the browser

I have a web application which will track he movement of user, and save the history location to database. And user may want to see his/her movement trace over a period of time, we have to display ...
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41 views

Randomly distributed cases according to census data

I'd like to randomly place a point within a geographic boundary with the caveat that I would like to use census data so that points are randomly placed according to population density (i.e. more ...
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62 views

Location API works, but neither Google Maps, not Here maps can not find location

I used Holux M-241 as GPS receiver. On Windows 8.1 I installed GPSDirect drivers, and now can see my location on PC. I tested that Location API can access to gps data (I used this Mozilla Developer ...
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436 views

What options are there for geolocation-aware SQL databses?

I need to implement an SQL database that can make queries using geo-location based logic. e.g. select rows within 500m of coordinate x, y What options are available to do this with sqlite, mySQL, ...
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30 views

Checking for proper administrative location?

I would like to ask you about one case. I have two vector layers. The first layer contains points. This layer has a lot of fields with data like name of district, voivodeship etc. The second layer ...
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332 views

Cost of usage for various providers [closed]

I want to use maping services in my website and I am confused about the options that are provided. I try to do a comparision between features, accuracy and most important cost. I am total newbie and ...
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91 views

extracting geographic location from NOAA NARR grib

I've downloaded a NOAA NARR grib file that I want to extract the wind component as well as the geographic location. I'm able to extract the wind component from the grib but I can't seem to find any ...
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322 views

How to calculate degrees per pixel in a given image? Or .nth of degree?

I am trying to make very rough estimates of Lat/Long coordinates in some random parking lot images. If I visit any such random parking lot on a Google map, I can click some driving area and Google ...
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317 views

Best Practice for HTML5 Geolocation with ArcGIS for Javascript API

My organization would prefer to use its own basemaps rather than those provided by ArcGIS Online due to the accuracy of information that is represented in them. The area we service is rapidly ...
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1answer
40 views

Locating Moon in Sky from Earth

I am working on project which need to find moon location from a specified lat, long on earth. So basically info I am having is Lat,Long and Timezone. Format of the moon location Info? So first in ...
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759 views

Downloadable, Open Source, IP GeoLocation database

I have an open source project I need a similarly open source IP GeoLocation database for. i.e. IP address to country (and ideally city). Ideally with a license that allows redistribution. This is a ...
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76 views

Finding the shortest distance between a point and a line

I read and understood the following GIS question and the accepted answer, calculating-the-distance-between-a-point-and-a-virtual-line-of-two-lat-lngs I can return the value in the ShortestLength ...
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38 views

Free Tide prediction service - World (a freeware program would work as an alternative)

Is there a free service where I could input a GPS location and it would return me the current tide situation at the position? As an alternative - some library / program that does the exact thing one ...
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26 views

European Address Locator on ArcGIS [duplicate]

i want to create a geocode address with european address locator on ArcGIS 10. There is only for US.
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369 views

How can I extract variable information from an OpenLayers 3 object?

I have tried to make a simple map with OL 3's Geolocation module. I succeeded with a resource wasting method. There must be a simpler way to extract variable information from an OpenLayers 3 object. ...
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105 views

Geolocation Ptojection Transform is not working for custom coordinate system

I am using Openlayers API and I have a custom projection and I defined it to my geoserver named "EPSG:51100". I have a custom tile map. var tms2013 = new OpenLayers.Layer.TMS("2013", ...
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Algorithm for estimating position of many objects and differentiating those?

Let's assume a crowd-sourced tree location use case where a research team asks hikers to GPS the location of a specific tree type in case they encounter it. This will lead to a large number of ...
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70 views

Retrieving all towns/cities/villages within 2km of river path?

I need to find all the cities/towns/villages that are within a 2km range along a river path. So the solution I have now is to create a google custom map, and draw a polygon which will be 2km from ...
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63 views

Data of worldwide shore lines and bathymetry

Please excuse my probably naive questions because I am new to this stack exchange. Is there a free database with all geolocations for shorelines? Is there a free database for near-shore bathymetry ...
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2answers
561 views

Difference between Positioning and Localization

I would like to know what are the differences between Positioning and Localization. In most papers they are used interchangeably. Are they the same? Does one come after another? I always thought ...
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194 views

Determining if a Geodetic location is inside a polygon made up of Geodetic vertices

Suppose we have a polygon with Geotic vertices (Points A through E). Is there an algorithm that I can use that could determine If F is inside of it? In addition, what is the most efficient way to ...
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11 views

Locating Wlan accesspoints-how? [closed]

Having a Netbook I would like to map routers geographically-how? Starting from scratch. Thanks a lot for your suggestions!
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114 views

What sub-meter geolocation solutions exist and how can I integrate them into a web and mobile mapping workflow?

I am the manager of seven water systems. What I am trying to do is map out every meter and valve on to a map and then my workers can have the maps on their iPhones so when they have to go fix a water ...
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75 views

Which are the most useful NMEA sentences for location based services

I am pretty new to GIS, I have been learning about all the different NMEA sentences from this website http://aprs.gids.nl/nmea/#allgp What is $GPGSV and $GPGSA and why are they useful to location ...
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1answer
197 views

Get lat/lon points from image pixels

I need to build an application with the following requirement: shows a map .png picture to user. then, users select several points around the map (I can get the x/y pixels from each point) based on ...
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199 views

Worldwide places reachable by sea/ocean

I'm looking for a list of all populated places(not just big cities/ports) on the world that reside on sea/ocean. The list should contain the place name, latitude and longitude. Does something like ...
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330 views

How to convert distance into latitude + longitude [duplicate]

I have start point (latitude) I know direction, lets say strictly north, and I want to calculate latitude which is 100 meters above the start point. The same for longitude. I believe there should be ...
3
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1answer
536 views

Mastering Geo Locators in ArcGIS 10.2

We just moved from 10.0 to 10.2 and woke up to the wonderful news that all our geolocators are broke and need to be recreated. Most were made in 9.3. This is fine, but the locator building process has ...
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752 views

What is the best database for an online Android location app?

I am working on Android app for locating food places in my city. Using Google Map v2 api. App shows user his current location, and the closest food spots around him. I want to store location ...