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I am working with polyline shapefile.

I need to add point data at every intersection of polyline/polygon which was no problem->simple intersection.

Problem is, points were not added to the ends (start/end) of each polyline. I am working on a basic license and am very limited to what tools are available. Ideally I would use linear referencing tools, or geometric network but neither one is available to me. I will also need the distance of each new (line segment), I do not want to break up the lines into actual line segments if possible.

Suggestions?

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  • One suggestion that may be faster than "working around" the lack of the linear referencing tool availability in Arc (such as dissolving the line, densifying points, running calculations on that etc.) would be to just use the LRS plugin for QGIS which does exactly what you want to do in a few clicks. blazek.github.io/lrs
    – Thomas
    Oct 9, 2015 at 18:35
  • I think you have access to linear referencing with basic license- details at desktop.arcgis.com/en/desktop/latest/tools/linear-ref-toolbox/….
    – Learner
    Oct 10, 2015 at 18:59
  • I got it, now I have a problem with duplicate records in the output table?? Thanks! Oct 12, 2015 at 19:41

1 Answer 1

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Assumed you have got the intersection points! Now let's see how to extract first and last points of the lines-

  1. Add four fields in the attribute table viz FirstPointX, FirstPointY, LastPointX and LastPointY with data type of double.

  2. Run python commands serially on the previously created fields as !Shape!.firstPoint.X, !Shape!.firstPoint.Y , !Shape!.lastPoint.Xand !Shape!.lastPoint.Y - this will populate those fields with x and y coordinate of the first and last points of that line.

  3. Export this attribute table as dbf or other format and use Add X Y data tool to create points from this table- these points are the reputed first and last points.
  4. You may need to remove duplicate points- for this follow this post.

  5. Now join the previously created points from Intersection operation.If need to track attribute you may use Spatial Join tool.

This is all!


EDIT as paul suggested.

If you have ArcMap 10.2.1 or higher then you can use Add Geometry Tool to add first and last point in the attribute table that it will discard 1 and 2 step.

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  • @ 10.2.1, Add Geometry Attributes was added, which can replace the 8 operations of steps 1-2. If OP had access to Advanced license, he could replace steps 1-3 with Feature Vertices to Points.
    – Paul
    Oct 9, 2015 at 22:20
  • @ Paul OP did not mention arcmap version but mentioned license level i.e. BASIC. So i opted for general solution.
    – Learner
    Oct 9, 2015 at 22:27
  • Not knocking your answer in the slightest! Other people might come across this thread later with different version/license, so I thought I'd comment what is possible.
    – Paul
    Oct 9, 2015 at 23:26
  • Where is a distance (length? distance along line?) in this solution?
    – FelixIP
    Oct 10, 2015 at 8:47
  • @FelixIP Thanks,I think there is no problem in using Linear Referencing with basic license- as i commented earlier.
    – Learner
    Oct 12, 2015 at 10:09

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