topic Re: Joining lines in Data Management Questions

Joining lines

Mohammad_ShafayatHossain — Thu, 21 Mar 2013 21:52:55 GMT

Hello guys,

I have a polyline shapefile with hundreds of line segments. It�??s actually a city street network. But as the shape file was created from CAD file, not all the lines are continues where they should be. For example, if you look at the attached Exhibit-1, between node 1 and node 2, there are 4 different line segments (I colored the lines so that it�??s easy to understand). But I want to make those lines a single continuous line. That is, there should be only one connecting line segment between any two nodes/ intersections. Is there any way to do that? Your help would be highly appreciated.

Thanks
Shafayat

Re: Joining lines

JuanLuera — Fri, 22 Mar 2013 12:53:12 GMT

Hola Shafayat,

I wanted to let you know, that I have put together a work flow with some screen shots and documentation. This document will cover how to Merge multiple segmented lines which are not connected, into one line. I am then including some suggestions, on your second part, where to remove the extra vertices, and then only have the beginning and ending vertices.

Gracias, Shafayat!

Re: Joining lines

Mohammad_ShafayatHossain — Fri, 22 Mar 2013 14:09:31 GMT

Hola Shafayat,

I wanted to let you know, that I have put together a work flow with some screen shots and documentation. This document will cover how to Merge multiple segmented lines which are not connected, into one line. I am then including some suggestions, on your second part, where to remove the extra vertices, and then only have the beginning and ending vertices.

Gracias, Shafayat!

Thanks for your reply Juan. I am wondering if there is other way of doing this. Manualy selecting lines would take me hundreds of hours as I have thousands of line segments and nodes.

Re: Joining lines

TimothyHales — Fri, 22 Mar 2013 16:38:52 GMT

As Juan mentioned at the bottom of his documents, the Dissolve tool will automatically join all of you streets based upon a field.

Re: Joining lines

Mohammad_ShafayatHossain — Fri, 22 Mar 2013 20:45:10 GMT

Thank you very much Juan and Thales...I was able to do what I wanted to do...

First I dissolve the entire shapefile, it combined all the lines and returned one polyline.

Then I used Feature to Line tool, it splited lines at points where two or more lines intersect 🙂

Re: Joining lines

JuanLuera — Mon, 25 Mar 2013 10:36:40 GMT

Hola Shafayat,

We are happy to assist in your inquiry on this item, and that it all worked for you as you wanted.

Gracias Shafayat!

Re: Joining lines

DanLee — Mon, 25 Mar 2013 17:59:21 GMT

If all lines already end where they intersect, as your image shows, you can unsplit lines between intersections/node in one process, either using Dissolve with the Unsplit Line option and uncheck "create multipart" or better using Unsplit Line tool (new in arcGIS 10).