QCAD.org Forum

I'm fairly new to QCAD, and so far quite happy. Alas, I've run across an issue that's left me scratching my head. I can't seem to join two polylines that look like they should connect.

Here's a sample from a larger file where I can't join the two entities. The DXF is attached.

I've tried to research this issue here in the forums, but I wasn't able to find anything that pointed me in the right direction. I did find this issue, where the OP described a similar issue, but I don't think it's the same root cause.

Mostly I'm at a loss for how to troubleshoot this kind of thing. When I try to join the entities (for example, by selecting both and doing [Draw] > [PolyLine] > [Create From Selected Entities] ), I get command line output that says:
...but no indication as to why my selected entities couldn't be joined.

Can anyone offer any guidance?

That is what I would call a folded polyline and you are trying to join them at a corner which has 4 end lines.

Screenshot from an EXTREM zoom!


A simple comparison between a roughly done dimensioning and the real lengths shows the folded effect.


If you clean up the polylines QCAD will be easily able to connect them.

Ah... fascinating! Looking into the properties and setting "closed" to "No" revealed it visually as well.

Each line was effectively doubled up by the process that built the SVG I imported, and my attempts to turn what looked like two different lines into two closed loops.

Thanks so much for the pointers!