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

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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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1answer
71 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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2answers
29 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 ...
2
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1answer
43 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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1answer
36 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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0answers
31 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 ...
4
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2answers
343 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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54 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 ...
3
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1answer
64 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, ...
3
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1answer
82 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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44 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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0answers
30 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
41 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
213 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 ...
2
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1answer
40 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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0answers
37 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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1answer
320 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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3answers
29 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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1answer
173 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 ...
3
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1answer
66 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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1answer
213 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 ...
3
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1answer
243 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
35 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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0answers
445 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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1answer
62 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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0answers
32 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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25 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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1answer
280 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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70 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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0answers
35 views

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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64 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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2answers
60 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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1answer
329 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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1answer
170 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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10 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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1answer
94 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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0answers
15 views

Aggregated zoning (sq footage) records by town [duplicate]

Is there a database of zoning records where you can find the square footage by room of an address? I would like access to it to create a cost splitting application.
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44 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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79 views

Detecting esri markers within certain distance using ArcGIS JavaScript API?

I have a set of coordinates that is loaded from database. I would like to detect all the loaded markers that are close to each others which is within a certain distance. so the code is something ...
0
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1answer
157 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 ...
3
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1answer
193 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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1answer
208 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
415 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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1answer
590 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 ...
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2answers
867 views

Socket Server to receive GPS location data

I am working on a web application which receives data sent from trackers via TCP Packets containing location information. Up until this point we have been working with dummy data within the mysql ...
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0answers
158 views

Which geo-location available in Twitter data should I use?

I am extracting twitter location on my side.Few tweets has perfect location but in most cases additional details are available (i.e. Country,bounding_box,poly lines etc) So confused regarding ...
0
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2answers
1k views

ArcGIS 10.1 Geocoding problems - Creature Feature Class/Error processing the table

I am trying to geocode a list of addresses to location in a particular shapefile which has roads. I'm using ArcGIS 10.1, and trying to geocode using the address locator 10.0 north america geocode ...
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3answers
127 views

Tools to write bus map?

I noticed that few cities provide a bus map for smartphones. As a result, tourists usually resort to just taking the subway instead because it's easy to figure out, although riding a bus is a better ...
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1answer
123 views

Extracting area with a range of lat long?

Is there any online tool to extract a certain area with a range of lat long? I'd like to overlay some locations on a map. To do so, I need a map whose range is specified so that I can determine the ...
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0answers
405 views

How to add Points to a jvectormap in Miller Projection [closed]

On jvectormap you can pull down a map of map of austria. I want to be able to plot points (using WGS84 coordinates) onto that map. The map has this information inside: "projection": {"type": ...