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

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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 ...
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19 views

Query Data from an Event Table in ArcGIS (Linear Referencing)

My goal is to store a bunch of past present and future Events in a central place from different vehicles, query those tables on demand and display the result in ArcMap. Note that right now, my Route ...
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26 views

How to locate M values in ArcGIS Silverlight API?

I am trying to work with M values in the Silverlight API. I gather that the IdentifyParameters would be used to identify a milepost by clicking along the line, but what would I use to query an M ...
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86 views

Adding Route Shapefile (PolylineM) to QGIS?

I'm new to QGIS (and to this amazing forum as well) and I already have an issue : I received a Route Layer in SHP format (PolylineM). I've easily loaded this file into QGIS but it doesn't seem to ...
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150 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 ...
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119 views

How do I create measured line segments along existing polylines from a starting point?

I realize my problem may be solved using Linear Referencing, and if that's the case I'm looking for help figuring out the workflow involved there. I'm working in ArcGIS 10.2 Desktop Basic, and this ...
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34 views

Linear referencing in Geographic Coordinate System (GCS) using ArcGIS for Desktop?

I want to make a new line segment in event table with linear referencing ArcGIS 10.2 for Desktop. I'm using two tools: Create Route with input line feature in Geographic coordinates system and ...
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70 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 ...
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117 views

Linear referenced data driven pages

I am trying to create a form of data driven page that incorporates linear referencing very similar to the "Linear referencing scenarios" example: I have a map that I will display on each page that ...
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74 views

Move points along a line, 100m left or right

In ArcMap 10, I have several hundred points taken along a zig-zag transect (line) but I need to move these points 100m to the left or right, perpendicular to the line. The points are stored as a ...
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62 views

Getting error Route without Measure from Make Route Event tool?

I'm using make a route event tool, i want to generate lines that have specific measurements. I made sure that the properties of the polylines were Polyline M as opposed to polyline, as well as my ...
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What determines direction in “Hatches”?

I created a route layer that uses hatches to help determine addresses along a street centerline. About 90% of the time, the hatches go up from zero in the direction that the line was digitized but ...
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55 views

Does ST_GEOMETRY support Linear Referencing

I am wondering if the ArcGIS ST_GEOMETRY provides Linear Referencing functions, such as creating a point based on a given measurement, like Oracle Spatial. I couldn't find any function like that in ...
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46 views

ArcGIS Linear Referencing successive overlay operations

I have 8 tables with RouteID, BeginMeasure and EndMeasure. I want to successively overlay them starting with the first two and then overlaying the result and the next table then the result of that ...
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59 views

Best method to find routes from a set of points

I have lines table (postgis enabled database) representing the streets. I have collected few gps points along a route and I would like to match it with the streets in order. Scenario - I am jogging ...
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50 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 ...
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260 views

ArcGIS 10: Create an event linear layer from a point layer based on directionality

I have a point layer that reflects the speed limits and a line layer of the roads. The location of the speed sign indicates in which direction the speed limit applies. How can I make linear event ...
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153 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 ...
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58 views

Transfer begin and end mileposts values from points on to a route

I have been trying to perform the segmentation of Road Network based on mile markers. I do have begin and end mile posts for route segments but they are county cumulative mile posts i.e. one segment ...
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126 views

How to find measures of points that are close to route in ArcGIS 10.2?

What I have is a route layer of a river and points layer with associated temperature data (temperature of the river) that were collected using an airplane. The path of the points does not match the ...
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113 views

How to access M-values in QGIS?

I am working with Linear Reference Systems and I know is very easy to get M coordinate (M-value) from a shapefile in ArcGIS. But, how to get the M-value in QGis? If you have doubts about my issue, ...
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187 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 ...
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136 views

PostGIS: How to distinguish overlapping routes (i.e., LineStrings) based on their direction?

I have a set of routes which are represented by LineStrings in my PostGIS database. These routes represent journeys that people make. I want to come up with routes that (a) overlap, and (b) have the ...
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104 views

Get the vertices on a LineString either side of a point (Sql Server 2008)

I have a point that sits on top of a LineString, both Sql Geometry types. POINT('0.5 0.5') LINESTRING('0 0 NULL 1, 1 1 NULL 1') I want to find the vertices of the LineString that lie either side ...
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Using M 'Measure' value in SQL Server 2008

MS Sql Server 2008 geometry type supports adding Z and M values to geometry objects, including linestrings. However, I cannot find any way to make use of these values, since methods such as ...
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242 views

Linear Referencing : Locate Features Along Routes [closed]

I've ran into a bit of a roadblock using this tool. I have roughly 3 million points that coincide with 200,000 routes. My routes have the From/To measurements, and my points contain X,Y data for ...
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42 views

Cleaning up Line Features

I'm in the process of creating some routes for which I need left and right sections. I have an original streets feature class, which I used "copy parallels" on, and came up with something like the ...
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302 views

How to use the linear referencing plugin?

I need a guide how to use this plugin properly, I'm a newbie on PostGIS and I'm trying to use the linear referencing plugin of QGIS. I've created a database on postgreSQL with the postGIS extension ...
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306 views

Calculate distance of points along a route QGIS

I have a line layer and a point layer, I need the distance between the first and the last point measured along the line. How can I do that using QGIS? Do I need to know linear reference? I don't ...
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77 views

How to get location of Milestones from Linear referenced data?

I have shapefile of highways, where each segment has the information indicating the starting mile and ending mile. Using these fields, I have created Routes, using the 'Create Route' gp tool from the ...
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67 views

How to locate events at intersections using linear referencing?

I am having problem in locating intersection crashes. Actually I have intersecting legs with their specified begin and end mileposts. I am trying to locate crashes based on the milepost values. ...
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221 views

Postgis 2.0 - How to get a Point from given LinestringM and a measure?

If I have a cable route linear referenced and stored in a LinestringM with M value is the length (in meters) from the start of the route - for example: LINESTRING M (0 0 0, 10 0 20, 12 0 40, 20 0 50, ...
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46 views

Linear Referencing Bunching up Points

I am having an issue working with Linear Referencing. I have tried this with both ArcGIS 10 and ArcGIS 10.2 and I'm having the same problem. It keeps bunching up the points at the vertices of the ...
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59 views

Get distance after path distance allocation

I use ArcGIS 10.1 in Windows XP. I have a two point feature data sets One containing a single point P1 and another containing multiple points Pm. I computed the minimum-distance path from P1 to each ...
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165 views

How to identify gaps in linear point data in FME?

I have been given a spreadsheet which contains coordinates of welds along a pipeline. I'm using FME to create points from the coordinates. On average, the points are roughly 11 metres from each ...
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479 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, ...
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328 views

How to use the QGIS Linear Referencing Plugin?

I'm having trouble getting the Faunalia Linear Referencing Plugin set up properly in QGIS 1.8. I've gotten to the point where I can do the Calibration, but I get a few warnings about missing lines, ...
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685 views

Measuring Distance from Point to Point Along a Path in ArcMap

I am looking at a village and want to find the distance from each house (point) to the pagoda (point). However, I want the distance to be measured along a path (which I digitized as a polyline) and ...
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22 views

Finding measurements of unknown points relative to reference points with known lat, long and measurements?

I am trying to measurements of the distance of multiple points relative to reference points of known latitude, longitude and measurements along a river. Is there tool that can do this? Would ...
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311 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. ...
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66 views

How to begin creating a linear referenced gdb with NHD

Our legacy fish distribution data contains data by reaches. Reaches are arbitrary locations on streams, eg. reach 1, 2, 3. Each reach's from-to are known, but not by x,y coords. An example is 'brown ...
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238 views

“locate features along routes” tool results in empty table!

I have no idea why the result table of the tool "locate features along routes" is empty. I have a stream network and a cross-section layer. Here is what I did: 1- Converted my stream polyline ...
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68 views

How to compute the distance from the beginning of a line for every points using postgis

I have a line, for which I need to know, for every point that compose it, what is the distance from the beginning. The data is stored in PostGis 2.0 For example, for the line with the point a, b, c, ...
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55 views

ArcMap ArcPy - Place signs with no lat/lng on map

I'm new to ArcPy and ArcMap but I do have programming experience. What I am trying to accomplish is to take over 22,000 signs from a database and place them on a map in reference to a street layer ...
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108 views

“Invalid feature class type” for input feature while using “Locate Features Along Routes”

I am getting ERROR 000810 (Invalid feature class type) when I add my stream shapefile as an in_routes. That is really weird to me.
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123 views

Why does ArcGIS 10 Calibrate Routes give Error 000443?

I am trying to calibrate routes using points along them. Those points are represent counts of hikers per hour. I have done a spatial join between my route layer and my points to have the RouteID in ...
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120 views

Change the starting measure point of a route - linear referencing

I have a few routes created and stored as a feature class in a GDB. When using the create route tool there is an option to choose the starting point of the routes. However, I only have certain ...
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115 views

ESRI Linear Referencing and negative lengths

I have been asked this question regarding Linear Referencing (for Arcmap 10.1), but i do not have much experience with it so I am hoping someone out there can help. Essentially, I want to know how ...
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83 views

trace a transmission line for a certain distance

I’m looking for a way to easily trace a transmission line for a certain distance. Here is the scenario that I am working with. We have an issue with our transmission line; our OMS tells us that there ...
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83 views

Writing length of line along the line

I sometimes have to write out the length along a line for every couple of hundred meters or kilometers. This applies to pipes, when the construction team wants to know where along the pipe they are or ...