Questions tagged [geolocation]
Geolocation is a means to discovering the physical location (in real-world geographic terms) of an object.
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Translate Orientation from Sensor data to Geo location
I am tracking a device that might loose GPS signal then and there. And when the GPS signal is too low, I should use the accelerometer and Gyroscope sensors data to guess which way they should have ...
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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 ...
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Warping Image having Lat Lon Geolocation array
I'm trying to implement a script to project an image having the two matrices of Lat and Lon points. I've followed the steps proposed in:
Unable to warp HDF5 files
and everything is fine. I create the ...
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Get all locations of Panoramio photos in a given extent
To create a visual quality heat map I'm trying to get a list of all Panoramio photos in an about 2000 Km2 wide study area. My idea is to perform a density analysis in GIS on a point shapefile ...
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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):
https://spatial.virtualearth.net/REST/v1/data/[DataSourceID]/[DataSourceName]/...
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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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How to cluster and paginate data locations on a map
I have many data points on my map and want to paginate the results into a fixed number of results per page. What I need to figure out now is how to rank or basically decide which location goes to ...
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Read and head data from Geofabrik OSM
I am trying to read and head all the data from geofabrik specific country using this code:
from pyrosm import OSM, get_data
df = get_data("country_name")
df.head()
But I am getting this ...
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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 (...
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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 ...
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Can someone point me what's the type of encoding used in
I am trying to understand the type of encoding used to represent a poly line on earth from here.com Platform Data Extension service requesting ROAD_GEOM_FC layer.
"LAT":"5013674,12,12,16","LON":"...
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Parse GPS track data into 10 sec intervals
I have a GPX track containing latitude, longitude and elevation data. The recordings are done by a Garmin device and have been recorded in varying intervals (between 1 and 44 seconds). I would like to ...
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Using Python-Flask-MongoDB with Geolocation field running on App Engine?
I'm trying to write an app which would act as a address caching API, so basically it needs to store addresses (geolocations) and later on I could query on a random address and radius and get all the ...
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how to transfer GPS device coordinates into mobile android app?
i'm trying to make an android app that collects data field in high accuracy, since the phone native GNSS doesn't provide highly accurate coordinates, i want to use Coordinates provided by a real GNSS ...
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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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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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Geolocate stores inside a mall?
OpenStreetMap lists the malls in Albuquerque, but not the stores
inside these malls.
Using the in-mall map/directory, wouldn't it be easy to add stores
inside the mall?
Is anyone doing this?
...
user1462
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Coordinates extracted from PDF are not exact
I'm working on rendering a georeferenced PDF within a map, I was able to retrieve the geolocation information from the PDF, but the coordinates I receive are not correct, they are a few meters apart ...
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Is there a standardized platform agnostic URL scheme to encode a geolocation?
Are there platform-agnostic URL Schemes like the geo URI scheme (https://en.wikipedia.org/wiki/Geo_URI_scheme) that are supported across all the major OSs and browsers?
PS: I came across the geo URI ...
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Derive a center point and radius from a set of GPS coordinates and bearings
I have a problem similar to Triangulation: Estimate a location using lat/long coordinates and bearings.
I have a series of GPS coordinates and bearings for each coordinate as well as accuracy for each ...
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Grouping of smaller cities (nearest) into larger cities
I have been looking for some suggestions on grouping of small cities (near by cities, places) into nearest largest cities (metro cities). For example, below are few cities from India.
Aluva, Kerala, ...
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Real-Time Shared GPS Location in QField
Is it somehow possible to visualize the real-time GPS locations of other persons involved in the same QField project (synchronized with QFieldCLoud)?
Maybe using external devices or additional apps/...
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Identifying if a user is in building or shopping mall using GPS or WiFi data
I am trying to understand if there is a logic to see if a user is in a shopping mall or a building or outside using GPS or WiFi data captured from a mobile phone.
Is there a logic to check?
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Embedding interactive Google Maps into a Google Form
I have a Google form with some questions. People can answer the questions about (future) trees they want to have in their neighbourhood. But there also must be the possibility that people mark the ...
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Google Reverse Geocoding API doesn't work on mobile internet
I was able to get Google Geolocations and Geocoder API to work via desktop and on my phone when its connected to wifi, but when I disconnect from the wifi, geocoder doesn't display the results.
just ...
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Determine the heading or azimuth angle of satellite Meteor M2
I am working on a project Meteor decoder, where I need to calculate the pixel geolocations of the satellite image to draw map overlays. I have all the angles except the azimuth angle. I tried to ...
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Gettting all countries information in world using Google API
The Scenario:
My customer wants to let the users insert their location either by choosing the country, city, region, state, etc.. from dropdowns OR the user can choose the location using google API ...
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Determine if a great circle is on the left or right from a point defined by latitude, longitude and bearing
Given
A point coordinate on the map specified by latitude and longitude. Shown as "C" on pictures below.
Direction where this point is moving, specified by bearing in degrees (0-359), where ...
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Standard(s) to store and share geolocation and 3D orientation data for an object, e.g. a raster
As an example, GeoTIFF is a great standard to embed geolocation data into a raster file for cartographic purposes.
But in that case, raster files are usually supposed to be on the projection plane.
...
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Searching geodetic databases for historical landmarks in Canada by Station names (or numbers)
I am interested in historical landmarks within Canada. I have a Station name ... Station 08U1209. I would like to read what information is available about it from our Canadian Geodatic database, but ...
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OpenLayers GeoLocation.getPosition() is inconsistent
In my mobile application I am using OpenLayers and trying to capture current position of the user by using GeoLocation.getPosition() method.
The method sometimes returns position and sometimes return ...
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Identifing specific plants out indexmaps (pixelgroups) and convert to .shp
I am working on a project where I have to identify a specific plant (it is toxic) in fields. I made a high resolution Orthomosaic (1,4cm7/px) and created a vegetation index where the plant I am ...
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Converting latitude/longitude into a slab number (or item number) and vice versa?
Purpose: To compress the data transmission for the longitude and the latitude. Initially these datas are in the form DD.MM.mmmm: degrees, minutes, ten thousandths of a minute. Latitude stands under 28 ...
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Leaflet catch window position
This is what I want to do:
When loading the map, it will first grab the window coordinates of the current screen, and then load the data points of the current screen.
The next screen is as ...
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Move polygon to new location (find new lat-lng coordinates)
I need to move my polygon (region of geographical area) with 4 different (O1, O2, O3 and O4) lat-lng coordinates (as shown in the figure) to another place, so that I get new values of all 4 lat-lng ...
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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 ...
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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?
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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 (greater than 100 meters), we need to identify in ...
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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 ...
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How to include long.vrt and lat.vrt into bt.vrt as x-dataset and y-dataset respectively, Using python?
I am using following code to create bt2.vrt file using python.
import numpy as np
import gdal
from gdalconst import *
import osr
# Function to read the original file's projection:
def GetGeoInfo(...
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Interpret terrain type from height data and/or geolocation
I have downloaded a large subset of the STRMGL1 Dataset, and have further split each entry down into 5km by 5km tiles. I now need to start classifying each tile by terrain types. Are there any ...
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Retrieve geolocation and image url from Blob in MySQL
I have a web form that collects three items: name, notes, and a geotagged img and stores it in mysql. The image is stored as a blob.
I would like to scrape/access the blob's geo-location properties ...
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GIS data visualization
I have a huge data set with geolocation information. I am trying to visualize the data but the tools cannot handle such a big graph. Size of the file is about 5GB and has more than 3 million rows.
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Achieving more accurate geolocation
Currently, I am using Google Maps API with HTML5 geolocation to create a POC about asset tracking via a web service. The user opens the web browser and we track it from there and display it on an ...
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Adding Composite Geocoding Database
I'm following an MIT tutorial I found here: https://libraries.mit.edu/files/gis/geocoding.pdf, to try to add a locator to ArcMap.
However, as I am not an MIT student, I cannot get to the step where I ...
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photo2shape QGIS 2.1x
I'm stuck on a problem with photo2shape in QGIS 2.1x (I already tried several versions).
I installed Exif Reader and photo2shape worked fine for me. Since last week QGIS crashes as soon I start ...
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How to directly get a Google API map based on a cell tower object
How do I pass a cell tower object to the Google Maps JavaScript API or Embed API to get a map for wherever the tower happens to be?
I realize that I can accomplish the task in two steps by first ...
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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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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", "http://...
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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 ...
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