Questions tagged [path]
The path tag has no usage guidance.
17
questions
0
votes
0answers
52 views
GRASS GIS: connecting vertices with lines along following Node Number
My goal:
Convert vertices to a poly line describing the general route to have 1 line describing the center line of a river.
Limitation:
The whole process has to be automated.
The raster can ...
0
votes
0answers
41 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
46 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
25 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
votes
0answers
40 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
votes
0answers
103 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
131 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
185 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
119 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 ...
1
vote
0answers
577 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
315 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.
...
0
votes
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
72 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
51 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
201 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 ...
1
vote
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
528 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, ...
