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Questions tagged [line]

A set of ordered co-ordinates that represent the shape of geographic features too narrow to be displayed as an area at the given scale (contours, street centrelines, or streams), or linear features with no area (county boundary lines)

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13 views

ArcGIS: Point nearest to border with information on bordering region

I am trying to create a table from a yield map in Europe, that tells me how much yield for each 5'x5' raster field is achieved. This I have managed. However, I now need information for each raster ...
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0answers
16 views

How do I find the closest distance to a line and then find the length of the remainder of the line to a point?

I want to measure the distance of a shape to a line and then follow that line all the way to a point and calculate the distance traveled. Here is my current map. I want to store that distance value ...
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1answer
25 views

Calculate the total area from two intersected polylines

If two polylines intersect with each other and there are more than 2 intersect points, there is more than 1 closed area will be created. How can I get these areas as polygons in ArcGIS?
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2answers
50 views

Generate points along branching lines

I am looking to generate points along a series of connected lines at regular intervals, but I wish to keep this interval even when a line is branching into 2 or 3 other lines. All the regular tools I ...
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0answers
29 views

Copying features certain number of times between layers in QGIS

On the image below, there are two layers showing the transportation network Red | current | only important objects | geometry repeats/overlaps Blue | new | required and other objects | ...
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1answer
37 views

Counting features within other features

I've several files composed of elements like the one below which I'm trying to make sense of (essentially a very simple microtopography study). I've vectorised the image with lots of separate lines ...
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3answers
71 views

Removing 180th meridian line on map of Russia?

I'm not sure how to remove the line that represents the 180th meridian (international dateline) on my polygon. I have the "Russia Country Boundary 2017" feature layer added from the Living Atlas. My ...
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0answers
19 views

Point to line - Qwater model

I'm using EPANET in QGIS (extension QWater). I have different layers : pipe network (line vector) household (point vector) Firstly, I'd like to connect household automatically and perpendicularly to ...
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0answers
20 views

Extend many line of a given distance

I have a feature with hundreds of lines and I need to extend all the lines of a given distance (for example all of 100 meter) there is a function in ArcGIS to do it automatically?
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0answers
17 views

Check point in line segment not accurate in Shapely

I use Shapely and I've run into an issue where I can find the intersection of two lines. However once I have the intersection point, I don't seem to be able and cross-reference that it belongs in both ...
1
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1answer
41 views

Which coordinate system/ projection would you use to measure lines globally distributed?

Which geographic coordinate system /projection would you recommend to measure the length of hundreds of lines which are globally distributed (southern and northern hemisphere)? The lines have a length ...
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2answers
68 views

Measuring length of edge of polygon

I have a layer of polygons, cadastrals, that i'd like to have the length of the edge of: I thought about doing this: Dissolve the polygons Create one large dissolved polygon Making a; From polygon ...
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0answers
35 views

ArcGIS polyline dangling endpoints count

Is there a way for count the number of dangling endpoints of a polyline? I need that because I would like to define a feature complexity parameter. For example, on the image below, the number of ...
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0answers
32 views

Channel network polyline shapefile filter [closed]

I need to filter the red polyline shapefile keeping only the real channel network without the little features (noise). I use ArcGIS
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1answer
28 views

QGis 3.4 Ledger line color and size change

I want to change the color and size of the ledger line when drawing an object in a line layer to make it more visible if the tracing-function works correct. It's currently very thin and red. The ...
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0answers
21 views

Spatial join by argument closest, but based on majority of vertices

I'm often working with different polyline datasets which represent street networks. One of the most common tasks I have is to join information from one layer to another. Often there are no mutual ...
2
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1answer
29 views

Create multiple paths by joining a set of start points in one layer to a single end destination in another layer?

I need to create a batch of paths so that I can calculate the best potential placement of a development site by counting the number of intersecting features along that path. I have a grid of points ...
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0answers
36 views

How to merge / join line segments by attribute and split at intersection

I have a complex network of line features with a lot of attributes (and unique IDs). Many features have the exact same values (exept the ID). I need to join all features with the same attribute which ...
2
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1answer
18 views

Curved lines turn to straight lines after sDNA preparation

I am an architect, sometimes I need to use sDNA to analyze networks mapped in AutoCAD. But I met a problem with curved lines, i.e. circle, or polylines. After importing .dwg file into .gdb, and using ...
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1answer
20 views

Mapnik LineSymbolizer for overlaping lines

I'm creating a map with Mapnik, and I have some trouble to correctly render overlapping lines. Fot instance let's consider this piece of XML: <Style name="ferry-routes"> <Rule> ...
3
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1answer
56 views

How do I split subjacent lines and merge attributes in QGIS [duplicate]

I have 2 vector line layers. They are subjacent, so one of them is exactly on top of the other but the features have different nodes and attributes. My goal is to create labels and descriptions for ...
2
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0answers
45 views

Merging sections of lines with same geometry in QGIS? [duplicate]

I have a series of bus routes with the frequency/hour attached in QGIS. The idea is to combine the frequencies on routes with more than one bus to have an overall bus frequency for the sections of ...
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0answers
36 views

Export marker line to DXF [duplicate]

I was wondering if there is a way to export in DXF from QGIS (version 3.4.4) this type of line (The one with the "E" as a pattern). Here is how the line was created Currently, when I export this ...
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1answer
86 views

dist2Line - Error in dist2Line(…) could not find the function “dist2Line”

I have a csv file with points (about 20 millions georeferenced points) and a line shapefile. I want to find for each point the closest distance to the line. The line is not a straight line it's ...
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2answers
38 views

Calculating line length within mulitple overlapping polygons using ArcGIS Desktop?

My question is similar to Calculating edge length of polygon within overlapping polygon using ArcGIS Desktop? However, my issue differs in that I have multiple overlapping polygons (upwards of 7) ...
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1answer
35 views

Polygon to line (polyline) in R

I am looking for an easy way to convert a polygon to a polyline in r. I have tried this but dit not succeed: polygon <- readOGR("~path/", "polygon.shp") polyline <- as(polygon, "...
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0answers
54 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 ...
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1answer
41 views

Polyline length within corresponding polygon

ArcGIS Pro 2.3: I have a feature class of polylines and for each polyline I want to analyze against its corresponding polygon. The link is the FLIGHTID field and it is a 1-to-1 relationship. I am ...
3
votes
1answer
26 views

Make line along edge of several rasters

I'll try to keep this simple. Is there a way to make a polyline that runs along the edge of these polygons. It is cadastrals that assembly the coastline and I need to generate a line that works as ...
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0answers
48 views

Impossible to split line in two parts with QGIS tool 'Split features' [closed]

I'm willing to cut a line in two parts with QGIS. So I enabled Snapping and I wanted to use the Split Features tool, like I've seen anywhere: one first left click and then another left click on the ...
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1answer
38 views

Determining percentage of overlapping lines using QGIS?

i have a lines layer that represents the bikeways of my city, and also have another overlapping layer that represents the bikeways that need repairs. How can i get an analysis of the percentage or ...
2
votes
2answers
146 views

How to convert several 'point' data to 'line' data?

I am using QGIS V3.4. I have over 1000 data points situated between a start and finish point expressing the Depth of coverage (DOC) of a pipeline. I need to identify the places along the pipeline ...
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1answer
53 views

Text on line within a line style QGIS 3

I'd like to create a line style in QGIS 3.4 where short text is written on the line. I am able to create a symbol layer in the line style, as a character symbol, but here only a single character is ...
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0answers
24 views

Using Soil Line to Assess Soil Fertility?

I am using a Soil Line model to research possible soil fertility in bare soil patches in southern Africa. I am using a function in R called BSL (Bare soil line) to create the soil line from some ...
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2answers
137 views

How to remove the boundaries of a Polyline?

I have a polyline. I want to delete outside boundaries of that polyline. I achieved it by splitting the features of that polyline and selecting/deleting the outer lines/boundary. I'm thinking, is ...
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0answers
16 views

How to connect point layers through their attributes/relations?

I have a project to use QGIS to track fishing activities (product goes from boat to fisheries to processors to factories...). All layers have coordinates and I managed to map them but now I´m trying ...
2
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0answers
32 views

How to export a single feature (line) from multiple layers and export to individual layers?

I have multiple vector layers representing a time series. Each layer contains many lines each. I want to select a single specific line from each of these these layers and save it to another layer. ...
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0answers
43 views

Google Maps: polylines showing up incorrectly

I'm trying to draw an encoded polyline via Google Maps but getting the wrong output. Correct Output: My Script Shows: I have this KML https://drive.google.com/file/d/...
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1answer
37 views

Measure distance for spatialLine in R returns bad value

I have this spatialLine in R: library(sp) library(maptools) library(SDraw) library(leaflet) x <- c(153.9, 152.67072,147.9879,144.25364,135.45557,116.03998,76.92708,45.10622,37.02522,36.76888,36....
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1answer
83 views

Spatial (nearest neighbour) Join Between Points (GPS coordinates) and Line in R

I want to do spatial join to an OSM line data and GPS point data both in geographic coordinate system, the result which I want is a road layer(has a unique ID) with the attributes of of road and the ...
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1answer
75 views

Lines in Polygon Analysis

This question is similar to the "points in polygon" analysis, but I want to keep the attribute data for multiple lines within a single polygon. The data source is multiple line segments representing ...
5
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2answers
87 views

Measuring average, min and max of vertex height of linear shape using QGIS?

I have a linear shape, all of the vertexes of each segment has a z-value, stored in the geometry. I need for every record, segment the average, min and max height value aggregated from their vertex ...
4
votes
1answer
89 views

Create Line From Points

I have this NDVI image of eucalyptus trees. I've already been able to isolate the trees and extract the location. Then I created the delaunay triangulation, turned it into lines, and then exploded to ...
3
votes
1answer
146 views

Merging lines (with and with no overlaps) in QGIS

I have two layers ("Layer_1" and "Layer_2") of lines where they sometimes overlap and follow each other for a bit and then takes another route (see the image below). "Layer_1": Red line "Layer_2": ...
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0answers
34 views

ArcGIS tool to batch re-order directions of polylines

I'm working with multiple datasets that each have thousands of polylines in their respective shapefiles. Is there an ArcGIS tool that allows me to batch re-order the directions of the lines? For ...
1
vote
1answer
49 views

Extending polylines edges to create polygons using ArcGIS Desktop?

I have two separate polyline shapefiles where the second was created by editing the records of the first one. (in the first file the line is in a different position than the other and have common ...
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0answers
10 views

Creating terrain polygon buffer from line using ArcMap? [duplicate]

I have a line in a steep hill, and need a 400 meter buffer on each side of the line. I know (roughly) how to create buffer on a point, but not a line. Can someone help me here?
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1answer
34 views

Creating/digitizing roads using ArcMap editor?

This is probably very basic but I am not able to figure out. I am trying to digitize roads by drawing lines. I go to Editor>Star Editing, select the layer, select my layer under 'create features'. ...
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1answer
235 views

How to get polyline coordinates in Leaflet

Using leafletjs, I created a polyline connecting a bunch of markers: var line = L.polyline( latlngs, { weight: 5, color: '#8EE9FF' }) Now, I am trying to get the start and end markers when I ...
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4answers
55 views

Welding line vertices or resume creating new line from end of old one in QGIS?

I'm creating a long and detailed (historical) border, and I guess it will take days. How can I weld lines, or just resume creating a new one directly from the end of old fragment using QGIS? When I ...