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Questions tagged [path]

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35 views

Using low resolution GPS from bikers phones, and mapping to streets?

I am new to GIS. I would like to: map-match GPS points to actual road map The following is for projecting a point to a defined line: # perform interpolation and project point to line pt_interpolate =...
3
votes
1answer
41 views

Cheapest path through polygons and lines from point to point

I want to find the cheapest path or the least cost path from one point to another point. The points are part of a vector map and do not lie on a network. All features being part of the map have ...
1
vote
0answers
18 views

Point to line interpolation using heading in R [closed]

I asked this question at StackOverFlow, but got no answers, so I thought I would try here also: I can draw a spline through 10 successive points like done in this post set.seed(1) n <- 10 x <- ...
0
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0answers
38 views

ModelBuilder and Raster Calculator Error 000539?

I'm currently working in ModelBuilder trying to use the Raster Calculator and I keep getting the error message 000539. The error according to ESRI says it's an invalid pathway. What I have circled ...
2
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0answers
79 views

Shortest path between start and end point with many other points in between

Sorry if double post, but I haven't found this specific problem in the search function. I want qgis to show me the shortest path (direct) between many points with each point only is hit once. There is ...
4
votes
2answers
112 views

Generate a GPX file that matches a road network from an imported drawing

I'm looking for a tool that'll help create a GPX file which will help me run a track and create "GPS Art" or "GPS Drawing". I would like to draw simple shapes, like animals or texts by following a ...
1
vote
1answer
153 views

QGIS 3.4.4 PATH pointing to grass-7.4.4, but I have 7.6.0 installed thru OSGEO4W

How do I change this PATH (it says read-only and won't stick) or use the network installer to make this work correctly on Windows 10? All I want to do is use QGIS and Grass? I've honestly been ...
-2
votes
1answer
82 views

Shortest path using line layer QGIS

I have a layer consisting of aprox. 20k lines What i want to do: In Qgis I want to be able to enter a start point and a end point. Preferably with street addresses and in second hand with ...
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0answers
462 views

How to add a text on a Leaflet map

Each day I need to draw a path on a map and add a text (like 4, 5 or 8 min) indicating how long it takes by car from the starting point to the destination (see the figure below). I thought it would ...
1
vote
1answer
277 views

Paths layers disappear on map after saving in QGIS 3

I am quite new to GIS. I am working on a historical map with three sets of points. When I create a path between those points with the "Points to Path" tool (via Ctrl+Alt+T), it shows up nicely. ...
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0answers
19 views

Check if path along triangular shapefile possible

I have a problem I came across but don't know how to solve it. I have a triangular shapefile of a river with one attribute value being the water depth. The idea is to find out if fish are able to swim ...
2
votes
1answer
67 views

Shortest path through complex vector layer?

I have a vector layer with complex geometry with many dead ends and breaks. I want to find the shortest path that will go through all segments of that vector. Here is a sample of how my vector ...
1
vote
0answers
49 views

Couldn't load images on html on plugin processing (Linux and Windows)

Context I develop a processing plugin for QGSI 2.18 and in design GUI with *.ui files (Qt4) I can’t load PNG images with relative path in html defined in .ui files Works with absolute path It ...
3
votes
2answers
174 views

Given a path, find the position on this path by traveled distance

I have a table that consists of a point and a sequence number which forms a path, similar to this: create table path ( sequence int, stop_position geometry(Point, 4326) ); The problem I am ...
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0answers
44 views

Calculate the footprint along the track between two distant squares

I am trying to achieve this kind of operation programatically, using preferably PostGIS (or else GDAL) Is there any well-known operation doing this? My use case is the following: I have two squares ...
1
vote
0answers
507 views

GeoJSON path using d3

I've been trying to make an animated path using d3, JSON, and a list of coordinates. This is the result in JSFiddle: http://jsfiddle.net/5m35J/92/ As you can see, there is a red dot in the corner, ...