I've received shapefiles for import into a pipeline modeling program. One of the issues I have is that after the shapefiles are imported, close examination shows that pipelines that should have connected in the software do not. I used QGIS to take a closer look and it appears that these issues stem from the lines not connecting in the shapefile.
Here's a close-up of one of those instances: https://i.sstatic.net/Yr73I.jpg
I've found some references on the web on how to extend that horizontal line to connect to the vertical line but no matter what I do I can't seem to be able to follow these references. Either I don't know the button or action they're referring to, or their interface is different than mine and I can't follow, etc. etc. etc. Of course, the crux of the problem is I am very much a novice with this software.
This video shows exactly what to do, but, I can't repeat the actions. Like, I click on something and nothing happens. I think I've found the right button/option to use and again, nothing happens. I'm quite lost!
Other references I've found but have been unable to follow/understand:
- Editing polylines in QGIS (extend, trim, fillet etc)
- How to extend line features up to their intersection point in QGIS?
- Extend straight line
For reference, I'm using QGIS v3.22.0-Biatowieża.