Questions tagged [geolocation]
Geolocation is a means to discovering the physical location (in real-world geographic terms) of an object.
215
questions
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34 views
Calculating Points of Inaccessibility
With limited skills in this area, I'm looking for someone who might be able to help me calculate the Points of Inaccessibility for various regions such as a country like Germany, a state like Florida ...
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0answers
28 views
Construction Lines offset when added to fabric
We use geo-positioned CAD data then copy paste survey accurate data into our Parcel Fabric. When we convert them to new parcels, the points move off the correct location by two to 5 feet. What ...
3
votes
1answer
53 views
Combining GPS and WiFi geolocation
I see that Google combines GPS with WiFi geolocation results to increase location accuracy. Does anyone know how it's done? How is WiFi information useful when it can have 10m+ accuracy? Is it only ...
0
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0answers
11 views
Well Locations in NAD27 do not overlay well locations on aerial or satellite images, i.e. Google Earth
Well Locations in NAD27 do not overlay well locations on aerial or satellite images, i.e. Google Earth. Computations are based on accurate locations and would like to know if it is better to place ...
1
vote
1answer
234 views
Latitude and longitude values in Google Takeout location history data sometimes out of range
I've exported my geolocation history data as a JSON from Google Takeout and the latitude/longitude values are out of normal range sometimes. It seems to happen for some locations only, while others ...
0
votes
1answer
53 views
How to determine which point lies in which polygon from a list of multiple polygons
I am new to python and currently working with Json file and I need to determine the location of each tweet and represent the grid in which they are present with the count of tweets in each grid cell.I ...
0
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0answers
69 views
How to create a map-based survey with drag-drop capability?
I am an urban planning master student. I need to create a map-based survey for my research. The survey should allow users to drag some different points from the toolbar to the map showing next to it. ...
1
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0answers
28 views
How can I access the user's location in my Google Earth Engine script?
I'm working in Google Earth Engine and I want to access the user's location to then be able to use the position when visualizing data layers. When running the code below, GEE doesn't seem to be able ...
0
votes
1answer
188 views
How to get GPS location in OSMDroid without Internet connection?
I made a little app in Android using OSMDroid library, my map is loading from assets. Now I want to put my GPS location on that map, but without using Internet connection. I found these
...
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0answers
16 views
Get exact address of mobile device using geocoder
I have been trying to get exact address of mobile device using geocode.
Here is my code
function showPosition(position) {
debugger;
console.log("Latitude: " + position.coords.latitude + "<br>...
1
vote
1answer
26 views
Accurately tracking location in outback? [closed]
I am looking for a way to efficiently track my whereabouts/tracks whilst traveling through the Australian bushland. In the past, I've just recorded my longitudes and latitudes from a basic GPS onto a ...
0
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0answers
34 views
Is the accuracy or PDOP included in smartphone or GPS camera?
I would like to properly geolocate picture Exifs on a smartphone or GPS camera and would like to record the accuracy of the GPS position as well.
I have downloaded a few photos from camera review ...
0
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1answer
87 views
Is there a way to Collect Lat-Long in a Google Docs Form by adding script?
So I need am trying to figure out a way to collect Lat long data and have it saved automatically when I fill a Google form on my phone. Is it possible as retracing address to plot is not possible for ...
5
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0answers
78 views
Calculating centre of city? [closed]
A lot of career websites allow you to select jobs from within a radius of your chosen location.
Since cities and towns can be considered irregular in shape, sprawling in the definition (do you ...
0
votes
1answer
57 views
ISO 3166-1 alpha-2 Country and region location in coordinates
I am doing some mapping that requires country and region average coordinates.
I've found this very useful table with the coordinates of countries, their ISO 3166-1 alpha-2 code and the average ...
0
votes
1answer
39 views
Geolocation using global map in ArcGIS Desktop? [closed]
I want to show my study sites (15 from different countries) using a global map in ArcGIS Desktop.
I'd like to show latitudes and longitudes (perhaps with a map grid).
Is there a way to drop pins ...
3
votes
1answer
269 views
Leaflet.locate: permission error on different browsers
I inserted a simple button for geolocation into a Leaflet-generated map by adding
L.control.locate().addTo(map);
into my HTML file.
In Chrome and Firefox it works great, Safari and Internet ...
1
vote
1answer
57 views
Placing Excel Data in ArcMap/ArcScene similar to Image Georeferencing
I have XYZ-dataset of Temperature Data in Excel, with no (Lat, Lon) added.
Every time when I try to display the Data in ArcScene the Programm tells me, that a Spacial Reference is missing (of course)....
0
votes
1answer
223 views
How external GPS can feed HTML5 geolocation API for django-leaflet
My goal is the following:
I'm developing a Django project. The goal is to locate places with a form. I'm using a CreateView generic view (maybe I should create it manually for more customization.
3 ...
1
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0answers
31 views
Determine geograpic coordinates from one fixed location as accurately as possible without expensive hardware
I build a GPS disciplined oscillator and I need to set antenna coordinates in order to be able to operate it as accurately as possible.
What I need is a way to determine the geographic coordinates (...
2
votes
1answer
167 views
How to move geolocation in OpenLayers 5 programatically
My geolocation in OpenLayers is incorrect by more than 5000 meters. I want to correct this issue, how can I programatically move my geolocation to the most accurate location? Or is it even possible?
0
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0answers
120 views
Display and manage (CRUD) point cloud in (Geo)Django 2
I would like to use GeoDjango to
Geolocate the place I will scan.
Would start to 3D scans with a DIY lidar based on Arduino/Rpi.
So far no worries. Then,
The Goal is to save x,y,z as input in ...
1
vote
1answer
445 views
Displaying markers within viewport for different country in google map?
I have multiple location. One is from Netherlands and one from India. How to display both country marker in google map view port?
Currently only Netherlands markers are displayed. So I have to drag ...
2
votes
0answers
130 views
GDAL, Geolocation Arrays, and Overflow Error?
I'm trying to use GDAL to create raster images from NOAA GSIP L2 data products. By looking at the provided NetCDF files from NOAA, it appears that geolocation arrays are provided. I tried following ...
0
votes
1answer
475 views
openlayers 3 and geolocation without HTTPS
I am creating an application where user can locate himself on map. the code is working fine in local development environment, but when i deploy it over server(IIS) the code won't work. here is code :
...
0
votes
1answer
415 views
Openlayers 4 Geolocation is not working
geolocation: function () {
var self = this;
self.geo = new ol.Geolocation({
trackingOptions: {
enableHighAccuracy: true
},
projection: self.Map.olMap....
6
votes
1answer
138 views
Figuring out the most probable country out of a string?
I got a problem with a twitter analysis i am doing.
What i want to do:
Based on the country i want to make a nice graphic about how many tweets were posted per country.
Using python and tweepy i ...
1
vote
0answers
199 views
standard for generating a geolocation error ellipse from lines of position/bearing
Given SEVERAL points, where each point is a line of bearing (LOB)/line of position, and thus each point consists of a (1) latitude & (2) longitude position on the Earth's globe that this LOB is ...
0
votes
1answer
57 views
Firefox zooms to user's location even if locator button isn't clicked when useTracking is true
When I am in Firefox and go to Esri's example at LocatorWidget and add useTracking: true to the geoLocate definition e.g.
geoLocate = new LocateButton({
map: map,
useTracking: true
}, "...
1
vote
2answers
1k views
Python- use geocode function on table of addresses & copy lat/long to appropriate row
I have a table of addresses, and I need my Python script to use my Google API geolocate function to return lat/long coordinates for each and add to a new field in the same row for each address. The ...
1
vote
1answer
2k views
Calculating distance from geolocation in Java
I'm trying to measure distance from one geolocation to another in Java. On stackoverflow I came across the following post and google developer page, giving me the following formula.
6371* acos(
cos( ...
0
votes
1answer
403 views
Set Metadata domain with GDAL (python bindings)
I'm trying to set geolocation metadata in a gdal vrt with python bindings.
ds = gdal.Open('foo')
ds.SetMetadata ({'X_BAND' : '1'})
gdal.BuildVRT('bar', ds)
Results in a vrt with the following ...
1
vote
0answers
175 views
How to attach POIs in wikitude with google map places [closed]
I want to create android application which uses AR and using camera it found the different stores around it and highlight it as display in this image. I am using wikitude sdk(javascript API) and ...
1
vote
1answer
44 views
User tracking on a defined route
I am having a vehicle route with a set of latitude and longitude values. User need travel on the specified route, If user deviates from the route (Grater than 100 meters), we need to identify in which ...
2
votes
1answer
1k views
Fire click event on Leaflet layer using latlng pair
I have a button on a leaflet map that when clicked zooms the map to the users current location. This function is working properly.
<button type="button" id="locator" class="btn btn-primary btn-lg"&...
0
votes
1answer
88 views
Mobile “GIS”/geolocalization application for popularisation of science? [closed]
I am looking for an mobile multi-platform (or at least Android) application which will allow me to share my spatial data.
On day to day bases I am working with QGIS in archaeology and with Losuc GIS ...
4
votes
1answer
410 views
Converting Australian coordinates (EPSG:3112) for mapping in R
I'm trying to map road accidents in Australia, which comes with x and y coordinates (e.g., x = 1328459.1 and y = 1670878 for Adelaide) as well as the following information:
PROJECTION LAMBERT
UNITS ...
19
votes
1answer
631 views
Why are geolocations on Twitter “rounded”?
I'm plotting some geolocations (lon, lat) of tweets collected using the Stream API with a 7mi. radius. The picture below shows two maps of the same data, but using different alpha/transparency for ...
1
vote
1answer
585 views
Python - How to Get lat lon information from .asc file
I have a .asc climate data file at hand and want to explore it to extract some information.
Based on searching, some general read methods have been tried as, import it as python pandas or numpy ...
1
vote
1answer
479 views
Grabbing Twitter locations with Python: Receiving ReadTimeOutError
I am running the following code with Python to grab Twitter locations for a specific bounding box:
import json
from tweepy import Stream
from tweepy import OAuthHandler
from tweepy.streaming import ...
0
votes
1answer
68 views
TurfJS Intersect not functioning with real coordinates the way it does with regular numbers
I have function that takes a users coordinates and tests it against a polygon. When I create the fence with whole numbers such as [3,2], [3,4],[5,6],[3,2]. My function returns correctly. I tried ...
1
vote
1answer
70 views
How to calculate Lat,Long,Alt of a pixel in an Image where lat/long/alt corresponding to one of the pixels in the same image is known? [closed]
I have an image taken using a mobile phone like the one attached below. Let's say that I know the location(lat/long/alt) from where this image was taken, which is probably the center of the red circle ...
1
vote
0answers
919 views
Want to access android location services in a leaflet.js project running in a webview
I am running leaflet.js project on my android app using a webview. Everything is great but for current user location leaflet uses GPS because it runs in a webview and as we know webview is extention ...
0
votes
0answers
45 views
Getting error while assigning Geolocation to raster
I am using VIIRS imagery EDR dataset and trying to give Geolocation to Brightness Temperature layer by creating VRT files of Longitude, Latitude and Brightness Temperature layers given in HDF5 dataset....
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0answers
65 views
Urban positional accuracy of Google Streetview [closed]
How does Google Streetview have accurate locations in urban environments, such as in tunnels, below buildings and next to buildings?
1
vote
1answer
33 views
Summing attribute values from many points geocoded on same location using ArcGIS Desktop?
I have geocoded a batch of addresses and many of these are geocoded on the same location. Now I want to keep just one point on each location but sum the field values of all points from the same ...
1
vote
0answers
158 views
Not able to figure out what is wrong with geolocation or projection in upoaded raster
I am working on VIIRS SDR dataset. I had different layer of Brightness temperature, latitude and longitude in given .HDF5 dataset. Using reference from http://geoinformaticstutorial.blogspot.in/2014/...
1
vote
1answer
33 views
GIS different coords
Could you, please, explain me the difference between two types of coordinates:
[-11539.488377739675,6710096.017961704]
and
51.4977973,-0.2691569
These coordinates represent London location, but ...
1
vote
1answer
8k views
Leaflet How To Update User Position Marker Real Time
I am trying to update user position in leaflet. Like when the user walks with their phone their location marker will move too based on location data just like Google Maps.
Right now I'm just putting ...
2
votes
1answer
1k views
How to map fence post holes to reality?
I'm looking for a good technique to take points, which mark the locations of fence post holes, from a Google map layer to then precisely mark with paint where to drill the holes. I noticed that my ...
