Questions tagged [path]

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1answer
50 views

Saving a shapefile to an output file path in my function(which the user will provide)?

I have a function which takes the coordinate argument from the user and converts it to a shapefile, and finally saves that shapefile to the filepath that the user gives. This is the code... epsg_code ...
0
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1answer
23 views

Unable to deserialize entity which contains field with type org.postgresql.geometric.PGpath

I have an Entity which has a field named coordinates of type org.postgresql.geometric.PGpath : public class Geometry { ... @Column @NotNull private PGpath coordinates; I am trying to ...
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2answers
49 views

PyQGIS: DLL load failed while importing _core. Environment path?

I would like to ask for help because I got stuck trying to code a custom application with QGIS and Python. I got some Python knowledge but I am quite new to QGIS. I tried the intro of the cookbook: ...
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0answers
14 views

What is wrong with this Path in Carto Map SDK?

I am using Carto Mobile SDK to develop an Android-based Navigation Application (using Java). I have been following the documentation step by step. Right now I am adding a 3D Vector Object on the map. ...
1
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1answer
26 views

How to get the first point's coordinates of a column with type path

I have the table above CREATE TABLE public.geometry ( id serial not null primary key, distance float not null, height float not null, coordinates path not null, ...
3
votes
1answer
56 views

Exporting shapefiles as SVG polylines

Recently I've been using QGIS to create fracture tracemaps as line shapefiles. I need to export these lines as an SVG that uses the tag polylines rather than paths. I've used the SimpleSVG plugin but ...
2
votes
1answer
46 views

Read path project and load layer

How can I correctly concatenate the path of a project with a specific shapefile layer and to be able to load it; this is: QgsProject.instance().readPath("./") <---path layer = iface....
1
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0answers
19 views

Path distance tool only downhill using ArcGIS Desktop

I'm working on a protection forest model against avalanches and rockfall processes and I have a problem with the path distance tool. I want to calculate the accumulated costs of rockfs travelling ...
2
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0answers
40 views

Are there project-specific svgPaths for QGIS?

I have a QGIS project that needs custom SVG symbols. These are all in a directory next to the myproject.qgs project file (and FWIW, everything is under version control): myproject/ .git/ ...
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0answers
28 views

Relative Path isn't working

I'm using QGIS 3.4.7 in Windows 10. I used Import Photos Plugin to insert some geotagged photos to QGIS. I saved the project with relative pathing, but when I move the files to another PC the plugin ...
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0answers
24 views

combine layers in qgis

I have a Shapefile that includes country divisions (Polygon). I have another Shapfile that relates to the country's roadmap (Path). I also have another Shapfile that relates to the village points (...
1
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0answers
26 views

Configure shortest path calculation with specific origin/destination points

I would like to calculate the shortest path from a point to another following a network. I'm currently using QNEAT3 for that purpose, but I can either calculate one path from two specific points or a ...
2
votes
2answers
85 views

Change path to help in QGIS 3.4.8 LTR

I want to use the offical help from qgis, which I can open with the F1 button. But it doesn´t work. I always get this message: I checked the Settings → Options →System, the path is right. And in the ....
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0answers
133 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
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0answers
49 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
76 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
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0answers
29 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 <- ...
2
votes
0answers
164 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
191 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
410 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
335 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
1k 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
486 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
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0answers
20 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
76 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
58 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
262 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
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0answers
47 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
584 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, ...