Questions tagged [linear-referencing]

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

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Appending Routes from Polyline Feature Class into LRS Network says duplicate route IDs with overlapping time representation found in source data

I am using ArcGIS Pro 2.9.3 with the Location Referencing extension. I am trying to create an LRS dataset with and LRS Network, and then to Append Routes into that LRS Network from a test polyline ...
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Ensuring that polyline feature class and LRS Network have same XY Resolution using ArcPy, ArcGIS Pro and Location Referencing

As someone experienced in Dynamic Segmentation and Linear Referencing but new to Location Referencing within ArcGIS Roads and Highways I am struggling to use Create an LRS Network and its surrounding ...
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Can routes be defined in LRS dataset without using calibration points?

The Essential Roads and Highways vocabulary from the ArcGIS Roads and Highways documentation says that a Calibration point is: A point feature that defines the measure for a specific location on an ...
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Creating new route in empty LRS dataset using ArcGIS Pro

I am using ArcGIS Pro and the Location Referencing extension (from ArcGIS Roads & Highways) to try to digitize (create) a new route in an LRS dataset. I run the ArcPy code below to create an empty ...
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Creating LRS dataset from line feature class with route IDs, from and to measures using ArcGIS Pro

I am using ArcGIS Pro 2.9.3 with the Location Referencing extension. I am trying to create an LRS dataset so that I can start using the Location Referencing tab on the ribbon to edit routes. I have a ...
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Error running a geoprocess for all layers in separate maps ArcGIS Pro

Trying to create a toolbox that will run locate features along routes for all layers in two separate Maps in ArcGIS Pro. Code snippet is below. aprx = arcpy.mp.ArcGISProject("CURRENT") ...
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Are linear referencing services supported in ArcGIS Online?

Does ArcGIS Online support services which have linear referencing enabled? I know Linear Referencing is supported in ArcGIS Server, but cannot find any support for ArcGIS Online.
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How to request GeoJSON standard be enhanced to support M-values

As far as I can tell, the GeoJSON standard doesn't support the M-dimension of linear referencing lines. For example, Oracle Spatial doesn't support LRS lines when using the SDO_UTIL.TO_GEOJSON() ...
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LRS SDO_GEOMETRY to "LINESTRING M" WKT format

I have a query that produces an LRS SDO_GEOMETRY as WKT (Oracle 18c): select SDO_UTIL.TO_WKTGEOMETRY(SDO_LRS.CONVERT_TO_LRS_GEOM(sdo_geometry('LINESTRING(1 2,3 4)'))) from dual Output: ...
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Creating route shapefile based on start and end mile markers in ArcMap

I am using ArcMap 10.8. I have an Excel file of road condition data that contains a ROUTE_ID field as well as beginning and end mile post values. I also have an existing line shapefile that contains a ...
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QGIS - Using LRS plugin to route lines with same start & end points (road roundabouts)

I'm looking to route a road network using the LRS plugin and it fails to work on items with the same start/end points. Is there a way around this or is there a tool I can use to simply trim a meter ...
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QGIS 'Locate points along lines' plugin

3/28/2022 Measure line tool: I have attached two pix showing the Measure-Line tool used to measure my line (representing a rail corridor). Locate points along lines plugin: I’ve attached two pix ...
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Use M Value with POLYLINE.segmentAlongLine

Currently I have a table with Begin and End M measurements. I also have a route feature class. I would like to be able to use the POLYLINE.segmentAlongLine(start_measure, end_measure) method but ...
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Set M-values as distance: Multipart M-values are set in descending order

I have a multipart polyline in an ArcGIS Pro 2.9.2 FGDB feature class (NAD83 UTM): I can set the M-values to the cumulative distance of the line by using the Set As Distance tool (setting "...
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Assigning point order (traffic signals) based on location on lines (bus routes) in another layer using ArcMap

I need to list all signalized intersections a bus route passes through, in order. I have both the intersection locations and the bus routes visualized in ArcMap. Any ideas?
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SDE.ST_GEOMETRY function returns negative infinity

ArcMap & Enterprise 10.7.1 — Oracle 18c SDE.ST_GEOMETRY — SQL Developer 18.1.0.095 I have an SDE.ST_GEOMETRY polyline FC that is M-enabled: I can query for the M-value of the endpoint of the ...
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Set M-values to cumulative length of line (via ArcPy)

ArcMap 10.7.1 — Oracle 18c EGDB — SDE.ST_GEOMETRY I have existing SDE.ST_GEOMETRY polylines that have M-values (aka 'measure values' for linear referencing purposes). I want to update the M-values ...
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Points of tracklog inside a polygon with a re-enter tolerance

I have points in PostGIS that represent GPS coordinates with a timestamp from a tracklog. I'm interested in selecting the times at which the tracklog entered and exited the polygon with a certain ...
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FME - Measure length of line to any point along line

Do you know how can I measure distance from the beginning of line to point. Points are on lines. I tried some solution and think about measuregenerator, lengthtopointcalculator, neighborfinder... but ...
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Ordering points along polyline using line_locate_point function in QGIS

I want to order a sequence of points along a polyline. I find solutions at this post and this one. They suggested to use line_locate_point() to identify the distance from each point in a point layer ...
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ST_3DIntersection with LINESTRING M and POLYGON M

I have a database of aircraft positions and I'm trying to develop a way to recreate what airspace looked like at a time T. So my idea was to store each pair of positions as a LINESTRING M(lon1 lat1 t1,...
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ST_Snap alternative to not lose time dimension when splitting a Linestring

In order to compute the distance of a given track at different periodicity (daily, weekly ..), I am using ST_Split to split the track at different point in time and compute the length for each ...
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Calculating chainage distance of points along polyline from start point of line using ArcGIS Desktop

I have road network polylines data with chainages at some specific points along the line. Is there any way to calculate the chainage distance of each points from starting point of the polyline?
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Adding linear distances along polyline segments (start/end stations) to attribute table in QGIS

This seems like a pretty simple application but I've been struggling to find the appropriate tool. I have a polyline feature (a trail network) that contains fields with attributes about each segment ...
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Remove Yellow Squares Created by the LRS Plug-in

Does anyone know how I can remove the yellow squares which appear in my QGIS project when using the "Locate" tool within the "LRS" Plug-in? I have refreshed the Project and also ...
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QGIS: Placing points on a shapefile in relation to their distance to other points on that shapefile

I'm attempting to add UK railway signal-boxes to QGIS to extract their coordinates - there's over 1000 of them. I have: The entire UK railway network shapefile The coordinates of train stations on ...
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Geocoding by route number and distance

How can one get coordinates from input consisting of country, route number and distance from the beginning of the route? For example: (Austria, A1, 0 km), (Belgium, A12, 20 km) etc. I have looked at ...
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Create distance intervals along a Route + Cross Section

I believe I've done this before but years ago. My goal is to make a X-Section of a line using a DEM. I want to create a Route (from a Polyline), give this route 1k intervals, and then "drape"...
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Linear Referencing and Z measurements

I am trying to build a linear reference route that uses the DEM derived distance instead of the default 2D distance. I have tried this How To (https://support.esri.com/en/technical-article/000008984) ...
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Creating lines along calibrated polyline from M values in ArcMap

I have an M-value enabled polyline feature class and from-to M-values of lines. The polyline is already calibrated. Is there any way to create line along the calibrated polylines or get that segment ...
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Storing information for each segment of spatial line

I have some spatial lines from a shapefile representing roads. I'd like to attribute to each segment an information, for example the state of the segment or more generally a scalar that gives an ...
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Improving display speed of a virtual layer in QGIS

Following on this question. I have a set of reference lines and a non geometrical table of events. This table contains the mileage of the event along the reference lines, amongst other attributes. I ...
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Find sublines, given initial and final offsets, via the command line

I have a CSV file that looks essentially like this: id,id_wkt,start,end,wkt 11,11,0,43,"LINESTRING(3.3623676 51.3132714,3.3626663 51.3130068,3.363068 51.3126811,3.3636323 51.3122504,3.3640754 51....
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How to write route with measure to PostGIS with FME?

I have calibrated route in file geodatabase (ArcGIS). I have line coordinate (kilometre) in the start and the end point. I try export this route with M-value to PostGIS in FME. But in result I have ...
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Get measurement values from point along the route Arcmap [duplicate]

I have two shape files, one is a route shapefile with polyline and have measurement values. The other one is point with coordinates but no measurement values. I am trying to snap the points to closest ...
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ArcMap calculate distance (from and to) from a points shape to the lines shape table

I am trying to calculate the From and To fields in the line table. I have got a points shape and i have got a line shape. ( see for example the figure bellow.) The points( in red ) intersect with ...
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How to calculate interpolated timestamps of linearly referenced points in ArcGIS?

I have a point feature class with timestamp attribute belongs to bus-gps smartcard data-set. I've used linear referencing tool to snap these points to a bus-route. So there are milepoints in the ...
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4 votes
1 answer
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Linear referencing to calculate maximum distance between points by group along line (river system) using ArcGIS Pro

I am using ArcGIS Pro. I have a series of points representing animal locations that were tracked in a small stream. I would like to get the distance between the most upstream and downstream location ...
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10 votes
2 answers
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Writing out PointM shapefiles from QGIS

I have a PointZM shapefile and I would like to drop the Z value and just write out the PointM values to a new shapefile (I'm trying to test a shapefile reader so other formats are not an option). If ...
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1 vote
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Creating linear event table from geometry using QGIS Linear Referencing

I am trying to find a way to dynamically create an event table from a linear feature. Imagine the example below. Registration of a sidewalk/fence or similar. The colours represent different routes. ...
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2 votes
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How to create a line feature which contains the overlying polygon attributes?

I have a road network Shapefile which intersects a polygon feature class. I need to create a excel table which contains the road number, the attribute from the intersecting polygon feature class and ...
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Handling events that cross more than one route using Linear Referencing of QGIS

I am working on implementing linear referencing. How would you deal with the situation below? Where an event is stretched across two or more "routes". At the moment I am playing around with the ...
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4 votes
2 answers
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Trying to understand QGIS LRS plugin - How to implement?

I have been trying to understand how to implement the LRS plugin but there are many things that does not "click" in my head. Not sure if it is the terminology or the process i dont understand, please ...
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Route Events Not Updating

I have created a route events point field based on a table. When using version 10.2 on a previous computer, the route events would update when the values in the table were changed. You would ...
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Locate features along routes: measurement unit output?

I am using ArcMap version 10.3.1: I have a polyline (also converted to a route feature) and points layer. All points lie on the line. I want to calculate the distance each point is from either the ...
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LRS plugin dropdown selections not working

I have just loaded the LRS plugin but when I try to access the layer with measures drop down selections on the measure tab they are not working. Calibration drop downs work and so to do the layer ...
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Esri Roads and Highways Extension on Linux ArcGIS Server

Is it possible to add Esri Roads and Highways Extension on ArcGIS Server running on Linux? The products list only includes windows version.
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Get the measure M along a CircularStringM in PostGIS without first converting to a LineStringM

I've been struggling to get PostGIS 2.5 to run any linear referencing functions on geometry containing curves (CircularStringM, CompoundCurveM for example). Is it possible to get the measure M along ...
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9 votes
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Linear referencing using QGIS only

I would like to do some basic linear referencing (label the distance along a line every 1000 m e.g.) without using plugins or PostGIS or creating points along the line. I tried working with ...
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Linear Referencing using Python only

I am using shapely to snap points to a line. This is the piece of code I use import geopandas as gpd gdf_segments = gpd.read_file("line.shp") shply_line = gdf_segments.geometry.unary_union point = ...
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