A digital map feature that represents a place or thing that has length but not area at a given scale. A polyline feature may have one or more parts.

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4
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1answer
50 views

Measuring Sinuosity of Walking Paths

I'm currently working on a project that examines the movement of consumers through different kinds of retail spaces in Central Asia – namely, bazaars versus supermarkets. I've equipped dozens of ...
4
votes
1answer
35 views

Calculate distance from all points to all lines within 10km using FME?

I have a polyline shapefile and a point shapefile. The points are along the polylines. There are over 100 lines and over 10,000 points. I want to calculate the perpendicular distance from every ...
0
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0answers
20 views

Count Overlapping Lines using ArcGIS Desktop? [duplicate]

I'm trying to calculate the frequency of overlapping lines. The question is pretty identical to the illustration show here Frequency of partially or fully overlapping lines However I have no python ...
2
votes
1answer
34 views

Segment matching on a polyline

I have about 1000+ running routes which I can load into memory as polylines using latitude and longitude data captured from a running watch. From these polylines I would like to be able to identify ...
0
votes
1answer
23 views

Split lines with points while maintaining other dissolved lines

I am on ArcGIS 10.2. I have a line feature class of a stream network. I also have a point feature class along the main stream (line) where a catchment enters that stream. I have dissolved my whole ...
1
vote
1answer
52 views

How to Create a arrow PolyLine with curved (geoDesic) using ArcGIS PolyLine

Trying to draw two markers(points) with a curved and arrow PolyLine using ArcGIS maps. Below is the source code, able to draw Poly line but it is coming as straight line. <!DOCTYPE html> ...
0
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0answers
31 views

line features show up as polygons in GeoServer

the layers are located in a postgreSQL Enterprise Geodatabase. I created a new line feature class and added it to the database and then added it to geoserver. But in geoserver it comes in as a polygon ...
5
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4answers
134 views

How to Unsplit/Dissolve multiple touching lines in Stream Network?

I am trying to dissolve multiple lines for stream networks into individual features. The dataset contains many stream networks so a complete dissolve of the whole dataset wont do as I would like to ...
0
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1answer
49 views

Converting polyline data to polygons?

I am trying to convert some polyline coastline data into a polygon that I can use to clip/subset back other data sets by this polygon. There are some small gaps in the coastline data, which ...
1
vote
1answer
9 views

How to set a polyline length as per a given Image

I have an image of a map representing the road networks. I have converted these road networks into a shapefile with only polylines. I want to set a distance to this road network. For e.g I know from ...
2
votes
2answers
53 views

OGR DXF Closed Polyline Conversion

I'm trying to convert closed polylines into polygons using ogr2ogr from dxf to mssql. Here It says that polylines are converted into POLYGON if they are closed, but I always get the type LINESTRING ...
2
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0answers
25 views

How to measure similarity of approximately congruent polylines

My initial question was posted here. The answer of whuber provides a nice solution for the case when polylines are congruent. However, the problem is that my polylines are approximately congruent ...
1
vote
1answer
58 views

Spatial join 2 polylines without common attribute

I need to spatially join 2 polylines, but the problem is that the tables have nothing in common. Also, one of the tables is 4 times as big as the other one. Essentially, what is need is to combine the ...
2
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0answers
26 views

nominatim api for long streets

I'm using the Nominatim API in geojson method to retrieve streets poly line. For short streets I have no issue and the results are good. However for long streets the data I'm getting back in the ...
1
vote
0answers
11 views

QGIS street labelling when rotating in composer

When labeling streets in a QGISmap everything's OK, no label are upside-down. But I need to rotate at 180° in the composer. Labels of lines don't flip, so they are upside-down! I tried to "show ...
1
vote
1answer
28 views

Polyline graphics not displaying in Javascript API?

I am getting features (graphics) back from an IdentifyTask, setting a symbol and adding to a graphics layer. Polygons and points show up just fine, but not lines. Has anyone else encountered this? ...
1
vote
2answers
28 views

Re-numbering points along a polyline

Using ArcGIS 10.1 for Desktop. I created perpendicular lines along a polyline. In the process of doing that, the lines were numbered in order (automatically). I manually edited some of the ...
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0answers
37 views

Making offset to polyline using ArcGIS for Desktop?

Is there a way to make an offset to a polyline in ArcGIS? i.e. something like the command "Offset" from AutoCAD. https://www.youtube.com/watch?v=9A8CyoAMnjU I can't use the Buffer tool because I ...
1
vote
2answers
63 views

Symbolising multiple lines in the same location

I would like to produce maps showing multiple lines that are in the same location. This poses the problem that the lines overlap each other making one of multiple lines visible when displayed in a ...
0
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0answers
47 views

Is it possible to “re-buffer” river polygon dataset? [duplicate]

I've river polygon data representing the water quality. This polygon data were derived from polyline dataset according to a buffer distance in the attribute table. Unfortunately I don't have this line ...
0
votes
1answer
51 views

Displaying polylines in different color / Color gradient

Though i am using QGIS, yet I am not confined by tool (can use an entirely different tool or a plugin for QGIS) usage.. Only aim is to get the following: I am reading various shapefiles in QGIS and I ...
0
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0answers
12 views

Pavement survey implementation

I know I am supposed to be specific...BUT I am working as part of a research team on pavement study. I need to visually display survey data in Arcmap. The surveys consist of x transverse ...
2
votes
1answer
109 views

Leafletjs get latlng center position of polyline

After drawing a polyline, I would like to draw a circle from the center of this line whose radius encompasses the entire line. For polyline's that have more than 2 points I can crudely get the center ...
0
votes
1answer
39 views

ArcGIS: Locate features along routes, line vs polygon

I want to use Locate Features along Routes to locate the polylines below: The routed feature is in red and I want to locate the green lines. I have buffered these but found it only locates the item ...
2
votes
2answers
139 views

Add custom variables to leaflet polyline

I'm drawing a route on a map with leaflet. I'd like to click on any point in the line and display the speed and time at that point in a popup ($speed[$i]). latlngs = [<?php for ...
0
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0answers
18 views

OTP encoded polyline same as Google encoded polyline?

I have been researching and trying to make sense. My question: are the encoded polylines that Google gives in its directions api same as the leg geometry encoded polylines of Open Trip Planner?
2
votes
1answer
42 views

Intersection between polylines feature to polygon in QGIS

I would like to transform a line shapefile into polygons. However, the tool Vector>Geometry>Line to Polygon doesn'to work to me. What I would like to do is using the intersection between lines and ...
0
votes
2answers
55 views

How to link a shapefile with points to a shapefile with lines?

I have a shapefile with points (nodes) and a shapefile with lines (pipeline) which I have extracted from a water distribution network. I have been able to transform the points into the right ...
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0answers
37 views

River flow downhill

I have polylines (rivers) with assigned elevations. I need to ensure they are flowing downstream and indicate which vertices are incorrect. I do not have 3D analyst, spatial analyst, or network ...
1
vote
0answers
59 views

QGIS field calculator expression: selecting min/max values within field groups

I am new to using QGIS (previously used Arc) and trying to get my head round the expressions and Python. I have series of polylines representing routes and require the linear distance from the ...
0
votes
1answer
27 views

Dissolving and returning values from primary lines

Im building a model and I need to dissolve line, that I marked in picture, to a line with field(NUMBER_OF_LINES) value of 2. Thsi filed represents how many lines were constructed to one line after ...
2
votes
1answer
62 views

After Polyline to Raster conversion empty attribute table in ArcMap10.2

I have a line feature class (displaying different types of roads) and want to convert this into a raster. For this I used the Polyline to Raster conversion tool, using "type" in the Value field in ...
1
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2answers
250 views

How to create a series of points along multiple polylines at once in ArcMap 10

I have a series of polylines that represent linear vegetation (shelterbelts, etc). I need to convert these to a series of points equally spaced in order to add them to a different shapefile that ...
2
votes
2answers
125 views

Convert line shapefile to raster, value=total length of lines within cell

I have a line shapefile representing a road network. I wish to rasterize this data, with the resulting values in the raster showing the total length of the lines that fall within the raster cell. The ...
2
votes
1answer
51 views

How to find length of a discontinued line feature

I wanted to find the length of features in a road layer. So I go through each feature in the layer and used, line = feature.geometry().asPolyline() to find the points which particular feature is ...
1
vote
2answers
62 views

Interpolate dxf polyline vertex elevation from DTM?

I am working on several autocad polylines (with several vertices...) that have the exact N,E coords but now I would like to add the elevation data for every polyline's vertices from a dtm. I thought ...
2
votes
1answer
62 views

How to create the same number of points along multiple polylines?

Input: Polyline Shapefile (all lines are different lengths) and a specified number of points that will be placed on the line (will be same number of points for all lines) Desired Output: Point ...
0
votes
1answer
72 views

How to Calculate the average value near a point

I am new to ArcGIS ArcMap. I want to calculate the average value of one point ( layer flowline ). This could be done using the value of the point and the values of the four neighbor points ( raster ), ...
15
votes
3answers
376 views

Zigzag Line Symbol in QGIS

I'm looking for a zigzag line symbol in QGIS. Is there perhaps an easy way to do this that I'm missing? I have tried creating a marker line using a simple triangle marker (^) and adjusting the size of ...
3
votes
1answer
58 views

How can I find small distance between polylines?

I`m trying to find lines which have small distance between them and I am using ArcGIS 10 for this. I had tried to make points at the both ends of the lines and to detect the distance between points ...
5
votes
1answer
245 views

What units are shape_length in?

When generating polylines from a series of points, I used "Points to Line" tool. From this, Arc generates a polyline feature class, which includes the attribute shape_length. What units are these ...
3
votes
1answer
114 views

QGIS - Calculate distance between a point layer to n nearest polylines

In QGIS I am trying to calculate the distance from a point layer to a polyline layer for the n nearest polylines. I have figured out how to calculate this distance to the centroid of the polylines ...
2
votes
0answers
57 views

Find Average Elevation - ArcGIS Desktop

I am working with 2 shapefiles. One contains the boundaries of a city, the other contains polylines representing the topographic features of the area. Essentially, the polylines make a topographic ...
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vote
0answers
27 views

Splitting multiple noncontiguous polylines into multiple files

I have multiple polyline shapefiles that are non-contiguous, that is to say that each shapefile contains polylines that have breaks in them. I am looking to split each of these polyline segments into ...
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0answers
46 views

ArcGIS ArcMap average values in a single flowline

I am newbie in Arcmap. I need to get the average (Velocity) values of 1000 points on my long flowline. I tried to make parallel lines on each gridpoint using the "copy Parallel" function. But there ...
1
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0answers
37 views

Wrong Display in Line Symbol and Gradient Color

I create a line symbol with specific gradient color and below control template: <ControlTemplate> <Path x:Name='Element' StrokeThickness='10' UseLayoutRounding='False' ...
2
votes
1answer
49 views

How to create Multipart Line in ArcPy?

I am developing some script in where I want to create custom multi part line geometry. For example: I have one array of points a,b,c and second array of points e,d,f. I want to create one ...
1
vote
1answer
107 views

Extracting raster values with polylines in QGIS

I have a polyline shapefile that represent a road an a raster grid with slope values. Is it possible to interpolate the shape file and the grid to have the average slope of the road? I know that I can ...
1
vote
2answers
99 views

Turning Polyline with Multiple Segments into One Single Line

Using QGIS Valmiera (MapInfo and other software is also available) Is there a way to convert a polyline with multiple segments into a single line? I.e. by taking the first point and the last point of ...
0
votes
1answer
27 views

How to convert 3d profiles to points in ArcGIS 10.1

I have created some 3d profiles using the Interpolate Line button (in ArcGIS 10.1). Which looks like: I would like to convert these lines into points and in order to do that I am under the ...