Linear referencing is the method of storing geographic locations by using relative positions along a measured linear feature.

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9
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6answers
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Get a point on a polyline from end points given distance along poly line

I have start point and end point of a polyline. How can I get a point on that polyline from end points specified by the given distance. How can I get this by using arcpy provided that this script ...
13
votes
5answers
16k views

Creating point file along line (trail) at regular distances (0.20 miles) using ArcGIS Desktop?

I'm using ArcGIS 10.1. I have a trail network that I'm trying to establish signs along the trails every 0.20 miles. Is there a way to create the point file from the line feature?
7
votes
1answer
5k views

How to create a point along a line given distance

I have been given a non-spatial database which contains the names of lines which I have a shapefile for. The database also has names of points and the distance of each point from the origin along the ...
7
votes
5answers
2k views

Split lines into non-overlapping subsets based on points

Given a table with line geometry, and one or more points that are snapped to this line in a separate table, I would like to split each line with one or more intersecting points at each of the ...
16
votes
5answers
22k views

Finding distance of point along polyline?

We need to find the distance of a series of point along a given polyline. We have a polyline dataset repsenting rivers in a catchment, broken up into river reaches (FID 1 through 35 for example). We ...
6
votes
5answers
3k views

How to interpolate points along a line in Python for ArcGIS 9.3?

I am building a Python geoprocessing script for ArcGIS 9.3. In the script, I have a simple LINE feature class with one row, one line. How can I use a linear referencing system to interpolate a point ...
2
votes
1answer
550 views

QGIS Linear Referencing

I'm not sure how to ask this. Essentially; I work for a survey company doing gas lines GIS. We use QGIS. We create hand drawn sketches of pipelines containing all sorts of information including: ...
6
votes
2answers
1k views

How to divide polyline into 1-mile increments?

I have a river shapefile that I need to break up into 1-mile increments. The polyline is 53 miles in distance, so I should I have about 53 mile markers as a result. I have tried the Divide tool, ...
6
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3answers
3k views

FME - Calculate distance of point along a line

I have created an FME workspace which inputs a pipeline as well as other linear features which cross it (waterways, roads, railways, fences, other pipelines, etc). The output is a point file which ...
4
votes
1answer
708 views

How to find Chainage of points using QGIS

I have two types of Road shape files. Road (Polyline) and important points (waypoints) along the road. Both of these shape files are prepared using GPS. I want to find the chainage of the points. Is ...
4
votes
1answer
199 views

Intersecting overlapping polylines using ArcGIS for Desktop?

I have 4 multipart polyline shapefiles (download a sample dataset here). The geometries are identical, except for the length of segments in each shapefile. They represent 4 variables describing an ...
3
votes
4answers
578 views

Redistribute linestring vertices to specified distance

I use a groundwater model program called GMS, and it has a very useful function "Redistribute vertices" (more info). I use this function all the time to both simplify and provide regular spacings ...
0
votes
1answer
142 views

creating shortest route using line segment layer as network locations

Using Arc10.2.1, trying to create a truck route that begins at one location on a county street grid and ends up in the same place, obeying a feature class of guard rail line segments throughout an ...
4
votes
1answer
1k views

Snap points to line and calculate chainage using Open source GIS

I have a line layer (representing a pipeline) and a points layer (representing valves) and I would like to calculate the chainage of the valves along the pipeline. I assume that I would first need ...
5
votes
1answer
1k views

Merging and joining two line feature classes while maintaining attributes from both using ArcGIS for Desktop?

I created an event layer using the MAKE ROUTE EVENT LAYER tool based on anticipated scheduled events. The road layer which is the base layer is intact. What I would like to achieve is combine layer ...
4
votes
1answer
34 views

What is the level of error I should expect when using a NAD StatePlane CRS from an adjacent state?

I am adding Georgia data to my GIS database and, unlike the California data I've added, have decided to use my existing EPSG:3361 (South Carolina StatePlane) coordinate reference system for ...
4
votes
2answers
562 views

How do I snip/split polylines at chainages?

What is the best way to snip/split lines at chainages? E.g I have a csv with the uniq ID of the polyline item and a start and end chainage. I want to extract the lines between the chainages stated. ...
3
votes
5answers
1k views

How to preserve original direction of NHD segments when creating route using gp.CreateRoutes_lr tool?

I am trying to figure out how to preserve the original line direction of NHD High Resolution data that I am selecting out and creating a route with. I'm using ArcGIS 9.3.1 and this is a python script. ...
0
votes
1answer
1k views

How to make a route event layer?

I'm using ArcGis 10.1 but I'm a beginner in this program. I want to make a route event layer based on a route I have already defined. My question is in the third line when the program ask me for an ...
3
votes
2answers
1k views

Calculating the distance between points and multiple lines?

I have a point shapefile of about 100 points and a polyline shapefile of about 200 lines and I am interested in finding the distance between every point and each individual polyline. My polyline ...
3
votes
2answers
403 views

Generating random points on a route

I am trying to generate random points on a route from one point to another. What I have till now is, given a source and a destination, I can get a route using Google's API. But how do I get the ...
0
votes
1answer
203 views

ArcGIS Linear referencing tools duplicating records and erroneous measures

I am using LocateFeaturesAlongRoutes_lr, MakeRouteEventLayer_lr, and MakeRouteEventLayer_lr to combine three different overlays into one based on this question I asked month ago. The code is as ...