Selecting Polygons Overlayed by Polylines

[JoshuaBrengel]

Hello,

I'm trying to select polygons from a feature class using a polyline feature class. 

See below for an example that shows the type of feature class/general concept I'm dealing with:

I don't want to have all three polygons selected, just the two with the blue dots.   My end goal is to export the selected polygons so that I can merge them into a one large polygon. 

It doesn't seem like there is a Select By Location method that can isolate the polygons I'm interested in (again, the two that contain dblue dots).  I tried "Append" on the two feature classes (first had to convert polygons to lines) and then used "Trim Line".  That worked to get rid of the dangle, but I couldn't get a line feature back that could be used for the purpose I wanted in Select By Location.

Also, I tried Integrate to change the line to get it inside just the two Polygons of interest (so I could then use it to select the two polygons instead of having all three polygons selected), but that was a bit too messy for the actual feature classes I have. In other words, the line feature didn't modify in predictable way that would be helpful to use it in Select By Location.

Thanks for your help,

- Josh

[DanPatterson_Retired]

At this point perhaps  working with something that gets 'most' is the best solution... then isolate the 'corner cases' for further analysis

Breaking the problem into parts may result in a multi-step process rather than striving for a one-step-gets-all

[JoshuaBrengel]

Ok, thank you for your help Dan.  Agreed.  I will stick with what gets me the most polygons and then do a manual overview. I will mark your intersect solution as correct.

[XanderBakker]

If the dataset is relatively small then I would suggest to select all polygons that intersect the line and manually deselect those that you don't want. Rather this, than invest time in a procedure to select most of the polygons you want and still having to select those that were left out.

[JoshuaBrengel]

Thank you Xander.  It's an interesting problem.  I appreciate your advice on it.  While I wish there was a way to do things non-manually, I think unfortunately the data's precision requires the solution includes some manual work.