Questions tagged [path]

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1answer
13 views

Creating path between many points in Google Earth

Is there any specific way to convert approximately 25000 points in Google Earth Pro to paths or draw paths between points automatically? Since I want to obtain their altitude data, I need it to be a ...
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0answers
12 views

Find geometry of shortest paths of series of points in a shapefile [duplicate]

I have two layers. The first where there is a set of routes, and another layer where there is a series of points. I would like to find the shortest paths following the route layers. I used OSM route ...
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0answers
7 views

Input Source File Linking

How can I load a data file layer (e.g.: output2) that is an output of a process ('processing.run') so that it serves as the input layer for a second process ('processing.runAndLoadResults') in the ...
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0answers
21 views

Run PyQGIS from outside QGIS on MacOS HighSierra [duplicate]

I know this question has already been asked multiple times but I just can't figure it out. I am working on MacOS HighSierra 10.13.6 and QGIS 3.16. I also have Python 3.6 and 3.9 installed. Python 3.6....
1
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0answers
36 views

How to link SQL file with relative path in Processing Scripts

I wrote a processing tool, which exports some tables from PostGIS to package, and as part of the export, I am calling an external SQL file to add some triggers, etc. The SQL file is located as my ...
0
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1answer
40 views

Does QGIS support WMS/WCS Connections that use path variables?

With QGIS, I have added and configured WMS and WCS connections for parameter queries as per the applicable specifications and I am able to add the layers and view imagery. However, I have a need to ...
2
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1answer
35 views

Using Points to Path Plug-in of QGIS

I was able to use the Points to Path plugin to create a simple line with a label in the middle: Here is the very simple text file I used: ID;GEOM "BL2990";"LINESTRING(490206.73 214102....
2
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0answers
30 views

Viewing images with relative path through Attributes Form in QGIS

I work with Sw maps (field data collector) that generates shapefiles in which a field links to images through relative path. Originally I had non problem using Evis plugin, now discontinued. Now I ...
0
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1answer
32 views

Finding best path through set of many points using ArcGIS Pro

Assume I have many points, say 100 or more, that represent a station to visit. I want to choose one of them as a starting point, and then navigate to each and every one thereafter to take a sample of ...
0
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1answer
28 views

Access GDAL result output

I have used rasterize function from GDAL in order to rasterize a shapefile that I have according to existing raster. The problem is that I'm not able to find or to show the resulting raster. This is ...
2
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0answers
97 views

QGIS Modeler using File/Folder input paramerter

I would like to use the File/Folder input parameter to set a path for all output layer files. I was trying to connect the File/Folder parameter to my output from a model and set a default folder path. ...
1
vote
1answer
148 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
152 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 ...
0
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2answers
225 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: ...
1
vote
1answer
36 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
110 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
59 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
vote
1answer
46 views

Creating tracks for moving points (while discarding records without movement)

I have a csv with columns: id latitude longitude timestamp Many of the points (or "id"s) do not change "latitude"/"longitude" over time, others do. How do I filter out ...
1
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0answers
29 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 ...
3
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0answers
69 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
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 (...
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0answers
36 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
100 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
181 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 ...
3
votes
1answer
140 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
35 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
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0answers
282 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
355 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
498 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
611 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 coordinates. ...
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0answers
2k 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
806 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
21 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
84 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
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0answers
72 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
325 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
48 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
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0answers
619 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, ...