Questions tagged [navigation]
Application of location and direction calculation to GIS. Including location and travel of vehicles, vessels, people and other craft.
81
questions
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Extract polygons from TIFF file of depth model
I am trying to create a shapefile of polygons from a TIFF file using QGIS. The TIFF file represents a depth model of Denmark. I want to create the polygons based on a particular depth (-2 meters), ...
3
votes
1
answer
1k
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Good GPS navigation app for iPhone with downloadable OFFLINE maps?
I am looking for a good GPS navigation app for my iPhone that will work away from wifi and cell coverage (GPS only) and thus allow me to download offline maps.
Paid app is OK.
Must Have features:
...
1
vote
1
answer
4k
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What are these terms in Marine Navigation ETA, DTG and TTG?
Consider a scenario where a ship has to navigate and reach a specific destination. I have a route plan comprising of multiple route way-points through which my ship has to go through to reach its ...
0
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1
answer
872
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Locking Scale when Panning using ArcGIS Pro
Is it possible to lock the scale of a map in ArcGIS Pro 2.9?
I'm manually editing a bunch of feature classes, so what I usually do is open the table, edit my field, then double click the next row ...
1
vote
0
answers
345
views
How to calculate if a turn is required from a set of coordinates?
I have some polyline data that represents a navigation route generated using Dijkstra's algorithm. Along this route I would like to calculate anytime a turn is required. Ideally, this would be some ...
3
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2
answers
1k
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Is the GPS signal being scrambled near military bases
We are navigating our survey aircraft using standard GPS receiver. Sometimes we fly near the vicinity of US Ramstein military base in Germany and it seems we are losing lock (no solution) in that area ...
4
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2
answers
17k
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Replace Navteq maps by a free one in a car built-in GPS
My car (Opel Zafira) have a built-in GPS with Navteq maps (SD 900 NAVI).
I wonder if it would be possible to update or upgrade the maps to an open source / free maps (like OSM).
Or is it possible ...
9
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5
answers
27k
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How can I remove default zoom in/out [+/-] buttons from openlayers to keep the navigation bar on?
I want to remove the default zoom +/- buttons from openlayers.
Here is my code
<script type="text/javascript">
var map, ia_wms;
function init(){
map = new OpenLayers.Map('map', {...
4
votes
1
answer
607
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Transit web app development (journey planner)
I am going to develop a journey planner (like Google transit).
Is there there any open source API available that can help me, or do I have to do everything on my own?
1
vote
2
answers
2k
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View Waypoints in OSM
I have a GPX file with my waypoints.
<?xml version="1.0" encoding="UTF-8"?>
<gpx version="1.0">
<name>My Favorites</name>
<wpt lat="-26.7183013" lon="-54.8139346"&...
2
votes
1
answer
2k
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Loading and displaying NDS (Navigation Data Standard // SQLlite)?
On QGIS 3.4 (Windows), I would like to load and display NDS (Navigation Data Standard) data (attributes and geometry). I succeed in loading NDS data sample from openlanemodel.
Via the QGIS DB manager,...
0
votes
1
answer
120
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Minimum number of satellites per constellation in Multi-constellation Navigation
Relating to my previous question, I'm trying to understand how the LS method work for multi-constellation GNSS trilateration/multilateration. I understand for 2 constellations, trilateration require ...
5
votes
3
answers
5k
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Missing selection and navigation tools (icons) in QGIS
I lost selection and navigation tools from the QGIS 1.8 toolbar when I tried drag then to different place.
I can't get them back anymore. Where they disappear? All these tools are checked but are ...
1
vote
0
answers
69
views
Storing Line(2D) data in Navigation Data Standard format as geometry using SpatiaLite
Is it possible to store Line(2D) data in Navigation Data Standard format(with coordinate bit shift) as geometry into SQLite and also make use of SpatiaLite functions for querying?
I have to use ...
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0
answers
25
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Place marker on map - GeoTools 25-SNAPSHOT - Java 11 [duplicate]
I am using GeoTools 25-SNAPSHOT in my application. I have displayed a map in my application (raster). Now I want to place a marker (image or simple colored dot) on a map at a specific latitude, ...
-1
votes
1
answer
447
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US 000 file type maps [closed]
I'm looking for a free enc so I downloaded this one https://charts.noaa.gov/ENCs/Agreement.shtml?US2EC02M.
After unpacking I have a file US2EC02M.000 and CATALOG.031
What should I do with those? I ...
1
vote
0
answers
207
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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 ...
1
vote
0
answers
201
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Convert Google Maps KML to preferred format on a Hyundai Ioniq EV's BlueLink Map
I want to upload data for all Eduroam WiFi locations in Canada to my car navigation system which has an "Import Address Book from USB device" option.
I downloaded the current locations I ...
3
votes
0
answers
2k
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NDS file format conversion to an executable GIS format
Could we open .nds files in any of the GIS mapping environment.
it stands for Navigation Data Standards, having the navigation features stored in it. There are 2 types of nds file formats. One is ...
1
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1
answer
2k
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Navigation/Routing in 3D View On Android
I need to build a navigation/routing application in 3D view like sygic, what are the available options if any?
Are there any existing open source or proprietary 3D mapping/libraries?
I have checked ...
5
votes
1
answer
693
views
How do you create a line network with GeoJSON navigation point data
I have a GeoJSON point file for use in navigation. I need to create a line network connecting the points to their corresponding 'neighbors' in the data. I have looked for any sort of plug in or ...
-1
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1
answer
65
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Seeking framework for navigation and routing for US
I'm building an app that will have navigation and routing as a primary component (USA Based). Does anyone have an cross-framework experience or user knowledge on which of the top mapping engines/...
1
vote
0
answers
577
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Calculating direction for points (lon/lat) in a perfect circle (shape) north of equator?
I have perfect circles in lon/lat on a OpenLayers map.
Near the Equator I locate each point on the circle using bearing-calculation for each point from circle-center. Meaning there are 360 bearings ...
5
votes
3
answers
8k
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Seeking free nautical route planner
Not actually a route planner, but it amounts to the same thing.
I want to know the distance a vessel at sea must travel between two points. Obviously this isn't just a straight line thing, if there ...
1
vote
0
answers
36
views
Determine left/right based on headings of in & out legs
I'm analyzing roads layer to create navigation layer. Each vector Linestring segment has direction of traffic.
Turn defined as where 2 directional segments meet.
However, I find it challenging to ...
1
vote
1
answer
45
views
Seeking Mobile App to insert customized roads for navigation?
I want to know if there is a mobile app (for cellphone) where I can insert my line features (roads) and polygons features (fields), all in vector form (.shp) and somehow navigate with that information....
0
votes
1
answer
20
views
Simulating navigation bar in attribute table of ArcMap using ArcPy? [closed]
I want to focus on specific record in the attribute table when it is open.
I have made several experiments with SearchCursor but that just selects the record, even focusing on the feature on the map ...
0
votes
1
answer
53
views
Seeking GIS Navigation App for High Accuracy Data? [closed]
Are there any mobile GIS applications that I can use to navigate to high accuracy data on android?
I would like to load layers - a .shp or .kml and use the map to navigate to points.
It needs to be ...
2
votes
0
answers
150
views
QGIS 3.4.3 touch zoom and pan
QGIS 3.4.3 touch zoom and pan missing from Map Navigation Toolbar is this a permanent loss or will there be a fix?
1
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0
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1k
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Developing real-time navigation App using QGIS API? [closed]
I want to develop a navigation application based on QGIS using C++, for live tracking. I think it is quite normal for GIS to do such things, especially QGIS as it is a very mature GIS platform. But ...
0
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0
answers
215
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Autonomous GPS navigation issues
I am trying to achieve autonomous GPS navigation on my RC car. I am using a very high quality GNSS/INS sensor (Advanced Navigation Spatial), from which I am getting lat, long and heading values. The ...
2
votes
0
answers
451
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Flat Earth approximation: forward and reverse formulas
For very small distances (< 100 m) I need to go back and forth between "polar coordinates" (i.e. bearing and distance) and "equirectangular projection".
I'm not sure whether I understand them ...
0
votes
1
answer
906
views
Converting GPS track to turn by turn directions
Working for a client on a tracking package for delivery vehicles, I've been given an interesting requirement. Over the past several months, we've been collecting telemetry from the vehicles, ...
2
votes
0
answers
261
views
Can navigation apps use compass and orientation sensors to improve reactivity and accuracy? [closed]
I've had the impression that Google Maps provides more accurate walking navigation on Android devices which include a compass in addition to a 3-axis accelerometer and GPS receiver. Perhaps this is ...
5
votes
2
answers
7k
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Multilateration Code
I am currently writing some code to do multilateration using TDOA and currently struggling and wondering if anyone has any reference code that can be used as a test case with some sample data that I ...
1
vote
4
answers
1k
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Points shapefile from QGIS to Android?
I have a points shapefile in QGIS with 40 groups of 20 points each (total of 800 points). For each point I have stored many information.
I need to check this information and add more moving on the ...
0
votes
1
answer
32
views
How to name a point where we are "back to the initial route"?
I have an initial route, that I leave (for instance in order to refuel). How to name the point where I'm back on the initial route?
1
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0
answers
422
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Flat Map that can go thru North Pole
Is there any map SDK or tool that can show the navigation that passes through the north pole in a flat way? Basically If I use a Mercator projection map it is only flat and cannot show the north part ...
3
votes
1
answer
874
views
How to create turn-by-turn directions from a generic polyline route? [closed]
I have some polyline data that represents a navigation route generated using Dijkstra's algorithm. Along this route I would like to calculate anytime a turn is required. Ideally, this would be some ...
0
votes
0
answers
64
views
Why many in-car navigation systems choose to go through the city center?
Most of the in-car navigation systems I've been using prefer to select an itinerary that goes through the city center, rather than getting around. And this is the case while the "Fastest" (not "...
0
votes
1
answer
365
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Why is the CORS coverage density in the US is so high?
According to the data I found online, it appears that the density of CORS (Continuously Operating Reference Stations) in the US is significantly higher compared to other countries. Why?
(NOAA ...
4
votes
1
answer
3k
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What are all the straight lines on old nautical charts?
I was checking out this old VOC chart, and I couldn't help but notice a pattern that I've seen on most nautical charts of the time: lines that to me seem to be just every possible line one can draw.
...
0
votes
1
answer
117
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Simple Linux desktop navigation system for tracking a drone
Trying to build my own ground control station (GCS) for different drones I have. One is a boat and the other a plane. I have looked at the GCS's available and they are great, but I want to do ...
1
vote
1
answer
61
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Road Network with 4th & 5th road level (small agriculture roads & footpaths)
I have a need to use 4th & 5th level roads (small agriculture roads & footpaths) for Germany and the only provider I could find is the Logiball.
Is anybody aware of another provider?
1
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2
answers
3k
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Android API - how get the car position (fixed to the road)?
All the android.location classes receives best REAL position of the GPS.
Is that any way to get from Google navigation API the CAR position x,y - fixed (tighten, interpolated) to the closest road on ...
2
votes
0
answers
80
views
Inland shipping GPS data, flag upstream/downstream movement [closed]
In the context of greening the inland shipping industry I am analyzing GPS data on moving ships. For these ships I would like to separate the data for upstream/downstream movement (up/down river). ...
1
vote
2
answers
1k
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Interactive shapefile based map
I'm developing an interactive web-based navigation application which user can search locations and navigate from point A to point B by an online map. The routing algorithm (find shortest trajectory ...
1
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1
answer
3k
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How can I transfer shape or database files to Terrasync without Pathfinder office?
I have point data in ArcGIS that I need to get onto my Trimble GeoXT (with TerraSync Standard).
I don't have Pathfinder Office.
Is there a way to transfer the data over so I navigate to the points?
1
vote
3
answers
1k
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World map with clear difference between land, sea and inland waterways
I'm looking for a free high resolution map that clearly indicates the land and sea in the world. I need it to calculate distances over sea between ports.
Additionally it should also include inland ...
1
vote
1
answer
256
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Routing Engine / data for hiking trails (Austria)
I currently use OSRM for the routing in my apps. This works well for car/truck routing. However, I have an upcoming project that requires routing on hiking trails as well. Are there any available ...