topic Re: Linear Reference in Geoprocessing Questions

Linear Reference

DevinUnderwood2 — Tue, 21 Mar 2017 22:42:04 GMT

I am new to linear referencing and wanted to know in the scenario of pipelines and the condition is an example given in my research. How is this accomplished or any different from just displaying in symbology ?

Re: Linear Reference

JayantaPoddar — Wed, 22 Mar 2017 06:44:21 GMT

Have you read What is linear referencing?—Help | ArcGIS for Desktop ?

The primary reasons to use linear referencing are

Many locations are recorded as events along linear features
Linear referencing is also used to associate multiple sets of attributes to portions of linear features without requiring that underlying lines be segmented (split) each time that attribute values change.

What is dynamic segmentation?
Dynamic segmentation is the process of computing the map locations of events stored and managed in an event table using a linear referencing measurement system and displaying them on a map. The term dynamic segmentation is derived from the concept that line features need not be split (in other words, "segmented") each time an attribute value changes; you can "dynamically" locate the segment.
Using dynamic segmentation, multiple sets of attributes can be associated with any portion of an existing linear feature independently of where it begins or ends. These attributes can be displayed, queried, edited, and analyzed without affecting the underlying linear feature's geometry.

Also check

Linear referencing scenarios—Help | ArcGIS for Desktop

Linear referencing sample applications—Help | ArcGIS for Desktop

Linear referencing datasets in ArcGIS—Help | ArcGIS for Desktop

Designing a linear referencing system in your geodatabase—Help | ArcGIS for Desktop

An overview of the linear referencing tutorial—Help | ArcGIS for Desktop

Re: Linear Reference

DevinUnderwood2 — Wed, 22 Mar 2017 22:38:04 GMT

Thank you for the advice, I will take a look at these resources.

Re: Linear Reference

DevinUnderwood2 — Thu, 23 Mar 2017 22:07:20 GMT

It looks like I already have looked at all of the suggested material and created some sample route data before posting my question.

Yet I am still unclear how I would use the concept for pipe quality , again wouldn't I just use symbolization ?

Re: Linear Reference

curtvprice — Fri, 24 Mar 2017 04:00:55 GMT

[why] wouldn't I just use symbolization [instead of linear referencing]

Linear referencing allows you to store linear events separately from the geometry. For example, you can have pipe quality change in the middle of a polyline (without having to split it into two features).

Linear referencing is especially useful if the data is managed and stored separately from the geometry, for example in an enterprise non-spatial database.

Re: Linear Reference

DevinUnderwood2 — Mon, 27 Mar 2017 14:41:30 GMT

It finally makes sense. An entire pipeline can be assigned a certain status, but there needs to be an existing data collection process of subdivided sections of pipelines. If not, then there is no need for this linear referencing.