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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2
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1answer
66 views

Using Python to convert line shapefile to raster, value=total length of lines within cell

I have already read the similar question Convert line shapefile to raster, value=total length of lines within cell using R. And I want to realize the function using Python. ===== My attempt ==== ...
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1answer
36 views

Get lat, long from QGIS polyline shapefile [duplicate]

I develop in C#. I want to develop a tool which needs to read the poly line coordinates. QGis is a very good tool that my users can use to generate a polyline .shp file. But how will I be able to ...
1
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2answers
64 views

Labeling each side of polygon with its length in ArcGIS Pro?

I am trying to figure out a way in ArcGIS Pro to label each side of a polygon with the length of the side without breaking it into individual polylines.
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1answer
43 views

Converting Multiple Polylines to Polygons

I have a shapefile for Parcels but the whole thing seems to be divided into polylines rather than polygons. I'm trying to create an existing land use map. I was hoping there is an easier way to ...
3
votes
1answer
48 views

How to fix discontinuities in polyline?

I have a polyline feature with all the railway tracks of a country. However, there are many discontinuities in the polyline (maybe 15 feet), that is, at several locations the polyline has a break of ...
4
votes
1answer
109 views

Clipping raster file in ArcMap over the extent of polyline shape

I have a calculated raster file, overlayed on a shapefile with lines (like on figure) I would like to clip the raster in ArcMap (since it is an interpolation and out of the vector shape it is mostly ...
4
votes
1answer
44 views

Overlapping line aggregation+trim in PostGIS, while summing values

I'm sorry for the vague title, I didn't really know how to name this. I am working on a project that visualizes and simulates 17th century trade. For this project we also use so called Minard lines to ...
3
votes
1answer
51 views

Clip beginning and end of lines in R

I have a series of lines which I need to 'top and tail' to remove the first and last x meters as roughly illustrated below with buffers of 200 m. library(geojsonio) library(rgeos) gurl <- ...
5
votes
1answer
55 views

Merging two polylines (street networks)

I have the following problem: I have two street datasets from completely different sources. I need some attributes from one dataset (red lines) to be joined into the other one (green lines). Until ...
3
votes
1answer
138 views

Creating centerline of polygon using PostGIS?

I am aware of Finding centrelines from polygons in QGIS? but I am looking for another Open Source GIS way to do this. Is there a possibility to create centerlines in PostGIS? I have this shapefile ...
2
votes
2answers
62 views

Densifying polyline to generate points at set distances using ArcMap?

I have a polyline, that I wish to create points along using ArcMap 10.2.2. I used the methodology suggested here, but I do not seem to be able to generate the points at the set intervals I desire. ...
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0answers
25 views

How to join polylines to form cells. Assign values to cells

In ArcMap 10.3 I have a grid created using fishnet that is made up of polylines. I need to find a way to make this lines join so that I can assign each cell a value based on what is in each cell. In ...
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0answers
46 views

Split Polyline QGIS - Too Many Resultant Features

I'm trying to split a single polyline into 2 polylines (I have lines that loop back on themselves, and I need to split each one into two lines: one for going, and one for coming back). When I use ...
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0answers
15 views

Breaking down a line into segments with different classifications

I'm new working in QGIS and my GIS skills are rusty. I have a polyline that is based on a road network. The segments are based on road data from NS gov't. I need to classify some of those segments ...
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1answer
70 views

Finding Points where two polylines cross in ArcGIS Runtime .NET SDK?

I am using ArcGIS SDK for .NET and have a graphic overlay defined on my mapview. I added two circles to the map (made with polylines) which overlap. I now need to determine the points at which the ...
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0answers
86 views

Divide polyline shapefile using R

I am very new to GIS in R. I have a question that may seem simple but so far I have had no luck. I am trying to split every line in a polyline shapefile into segments of three. My original file has ...
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0answers
33 views

How to stop QGIS auto snapping new poly lines as they are being created?

Im creating a polyline based data set which involves digistising around a large amount of street outlines. Is there a way to stop QGIS from auto snapping the new polyline section to a straight ahead ...
0
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2answers
435 views

Distance between points along polyline ArcGIS for Desktop?

I'm using ArcGIS 10.3 (Desktop), and I'm trying to measure the distance between points following a path determined by a set of polylines. Hand measurement is not a viable option-- there are ~7500 ...
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1answer
35 views

Algorithm to realize monotone polyline?

I'm searching about the algorithm helping me realize monotone polyline. I would wonder if anyone has any program realizing monotone polyline.
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1answer
147 views

Calculating the length of the network lines inside polygon in QGIS 2.10.1

I am working with 2 datasets: delineations of the neighbourhoods traffic network. This is how they look: I would like to calculate the length of the roads per neighbourhood (polygon). As you ...
8
votes
4answers
250 views

How to create a polygon connecting the endpoints of multiple lines using python?

I'm trying to figure out how to create a polygon that connects all the endpoints of a shapefile containing a set of polyilnes with pythonscript in ArcGIS, I'm having trouble doing this as the order of ...
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vote
1answer
78 views

How to add points to line at every polygon/polyline intersection and have attribute table including distance of new line sements

I am working with polyline shapefile. I need to add point data at every intersection of polyline/polygon which was no problem->simple intersection. Problem is, points were not added to the ends ...
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0answers
38 views

Use ArcMap to determine Polyline overlap, at a certain tolerance, against multiple other Polylines

My goal: Take one fiber route and see how much of the route is within a given distance from 0 other routes, a single route, two routes, and three or more routes. I have used the intersect function to ...
2
votes
0answers
56 views

Equal distance points on polylines

In QGIS 2.10.1 I want to create a point layer out of my polyline shapefile and all the points shall have a fixed distance (in meters) while I use WGS84 as coordinate system. So what do I use for this? ...
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0answers
53 views

ClearLayer() not working for polyline Decorators

I am working with leaflet api, where user draw shapes on images. Clearly i am having problem with polyline decorator because clearlayer method doesn't seem to work for decorators, might be a bug ...
5
votes
1answer
154 views

Dividing polyline layer in clusters with specific requirements in ArcGIS for Desktop?

For my work in ArcGIS 10.2 for Desktop I need to divide line layers into clusters/groups. Currently I am doing this manually, but I like to automate this. The line layers can consist of 50 up to 2500 ...
2
votes
1answer
92 views

Polyline geometry to graphic - SimpleLineSymbol is the only type not displaying on the map

I have modified the Measurement widget to keep a session based history of the measurements the user has made. When a user clicks on a history item, it should display the geometry associated with that ...
2
votes
1answer
96 views

Get the number of bends of a polyline

I am trying to get the number of curves/bends of a polyline. I know that I can accomplish this by getting the vertices of the polyline, and check the from and to and compare their angles, if they ...
0
votes
1answer
45 views

Line sections between points in ArcMap?

How to get shape with lines between points which have to lay on the same line entity?
1
vote
1answer
360 views

Cesium js, Draw line binding a label to a position

I would like to draw a line binding a entity to its label with an offset. CesiumJS allows to offset the label, however its not possible to draw a line (or polyline) from a position to an offset like ...
0
votes
1answer
179 views

PyQGIS: how to transform single QgsGeometry object from one CRS to the other?

I have a polyline layer with roads in WGS84 that covers several UTM zones. For every road I need to place a set of points at different distances (in metres). To do so I want to reproject each road to ...
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vote
1answer
48 views

Openlayer3 3.9 vector layer ignores some linestrings

I updated my small OL3 project to 3.9 but noticed that one of my vectorlayers now only displays very few features: Other point layers work fine. Also I checked the basics: Browser calls and ...
0
votes
1answer
78 views

Can ESRI JS API show PolyLine as Bezier curve?

Can ESRI JS API somehow show PolyLine as Bezier Curve? If yes, how to do it?
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0answers
27 views

How to find the most accurate street/road by a given coordinate and some previous locations?

I'm building an application that gets user's position and tracks its changes while driving providing some information stored in shape file. To get the most accurate information from this shape file ...
1
vote
1answer
97 views

Cut line with polygons?

How do I cut a single line with polygons (in several segments) so that each cut line take data from the polygons? Something like a centroid takes.
0
votes
1answer
43 views

ArcGIS: How to create polyline features from the southern delineations of a polygon?

This can be considered a follow-up question to what I've asked a few weeks ago in this thread: How to set a buffer only in a specific direction? Back then I was trying to set a buffer to several ...
5
votes
3answers
184 views

Calculating avg distance between two non-parallet lines?

I'm currently working on creating a data model that will allow the analyst to digitize two non-parallel lines of approximately the same length. Currently the methodology is to divide the lines into 11 ...
3
votes
0answers
91 views

Merge line segments by length (in QGIS)

I have a layer containing line segments which are connected by their endpoints (e.g. as within a street network). I'd like to merge (union) polylines within this layer into one feature until following ...
0
votes
0answers
130 views

How to find one polyline of google map overlaps other polyline in map?

I have two routes let's say route 1(Location A to F) and route 2(Location B to E) in Google map. How could i determine route 1 includes route 2? Here route 2 is shorter than route 1 so, coordinates ...
5
votes
2answers
134 views

Polygon points to Polyline

I am trying to create a polyline from the points that I query from a polygon. I have a polygon, and I am getting its edges, casting them to segments, and then use QueryNormal to get the mid point ...
0
votes
0answers
24 views

Space points out a minimum distance along a line

I have just snapped thousands of points to the polylines they share attribution with but a lot of the locations overlap slightly. I would like to create a minimum distance between points. I DO NOT ...
0
votes
0answers
70 views

Drawing lineString in Google Earth API

I am able to draw a Polygon on the Google Earth API which is integrated in my website but i have to draw a lineString. Does anybody can help me? Here is the code i use to draw the polygon: function ...
0
votes
0answers
58 views

Snapping points to polylines and maintaining minimum distances between the points as well as meeting other parameters

I have thousands of locations that I would like to snap to be placed on top of a hundreds of polylines based upon matching attribute fields. Think of them exit signs located on every ...
0
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0answers
208 views

google maps api with polyline not displaying lines

I converted shape files into mysql table that has features like LINESTRING and MULTILINESTRING. I am using google maps api ( var shape = new google.maps.Polyline({path: ...
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vote
1answer
66 views

Extracting the closest Point to a Line within a Polygon using ArcGIS for Desktop

I have the following shapefiles: Polyline: Detailing a road network. Polygon: Containing approx. 2000 polygons enclosing sections of that road network. Point: Containing numerous (OS Addressbase) ...
3
votes
1answer
173 views

Gradient colour for lines

My road network is broken up into segments. I want to produce a map that shows where the segments start and finish. I don't really want to create a point layer that shows the location of the ends ...
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3answers
105 views

Generate line from unordered set of points

What is the best method to take a set of points and generate a line? There are too many to simply guess a "connect-the-dots" situation & These points do not have an attributes in which they can ...
2
votes
1answer
49 views

Automating Line Creation with Multiple Points

I have a feature class that has over 1500 points in it. I then need to create line segments from these points based on an ID number. For example points 1-6 have the ID 1, points 7-12 ID 2 etc. Each ...
0
votes
1answer
113 views

Split a shape file of lines into even spaced segments

I am using ArcGIS ArcMap 10.2. I have a shapeless of polylines and want to split them each line into 100 m segments. I can see under the editor toolbar the split tool and that can divide each line ...
3
votes
1answer
170 views

Union on lines using ArcPy?

Essentially I want to union multiple (20) congruent line shapefiles, where overlapping line segments in the input shapefiles are combined into a single resulting output shapefile. But I can't union ...