Join Command Removes a Corner

[michaelwL4TRH]

Does anybody know why the join command removes a corner when joining two polylines sometimes? 

I have a polygon that is made up of two separate polylines. See image below.

If I select the other line and go "Join", I get the following:

Which is not at all what I want. Anybody know how to avoid this because it seems to happen all the time to me.

Thanks

[Patchy]

Attach your .dwg

[GeeHaa]

Can you post the drawing?

[pendean]

Where are you "joining" exactly, what two sides are you clicking on? It is unclear for sure.
and if both "L" are PLINEs, can you PEDIT>JOIN them without the same issue?

[michaelwL4TRH]

I click on the top portion (highlighted in the first image), then the botton portion, type "Join" in the command line and then it ends up as the last image. I can do PEDIT then JOIN but I don't find that as easy for my workflow as just typing Join and continuing on.

Drawing has been attached. 

[Patchy]

It doesn't do that with my Autocad.

Even the top is 2dPoly and the other is LWpolyline, they still joined without clipping.

Probably some funky thing from the rebar detailing you add on.

What is your PLINETYPE current setting?

[michaelwL4TRH]

PLINETYPE was set to 0. I changed it to 1, tried again and same issue. Changed it to 2, tried again and same issue.

I tried to join again, this time with the rebar add-on disabled and it still does not join properly. So not sure if it is the add-on causing the issue or another problem I am having.

[Patchy]

Try the period  or a _:

.JOIN

or _JOIN does it make any difference.

[michaelwL4TRH]

Both have the same issue where it deletes that bottom right corner

[Patchy · Accepted solution]

Try autolisp to replace your join command.

Give it a test. Drag and drop it into your drawing area then type in JOIN.

[dany_rochefort · Accepted solution]

@michaelwL4TRH  Simply use the Fillet command rather than join. I can be done in 2 clicks if you select the right lines. Makes a closed polyline when finished.

[pendean]

@michaelwL4TRH Thanks for the file: how did you end up with two different PLINE types there if I may ask?
That seems to be the problem testing here in R2023.1.2.
Did this file at some point have a pre-2000DWG life? Or from a 3rd party program conversion to DWG?

FILLET tip above works just fine: A quick BOUNDARY command usage is a quicker replacement. Unless you have hundreds of this exact issue in your files it is almost not worth dissecting it anymore 😉

[michaelwL4TRH]

This works. Thanks I will try this for now.

[michaelwL4TRH]

This also works. Thanks!

[michaelwL4TRH]

Honestly I couldn't tell you how I got two different line types. I almost always am just selecting polyline and running with it from there.

i have this happen occasionally, usually when it does happen I will just redraw it and sometimes that will fix it.

Thanks for the help guys

[Kent1Cooper]

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@Patchy wrote:

Try autolisp to replace your join command.

....

---

Just be aware that I edited that JOIN command before there was a JOIN command in AutoCAD.  Today I call it something else [PJ = Polyline Join, as a clue to its object-type limitation], to preserve the ability to use JOIN for what it can connect that PEDIT/Join cannot -- 3DPolylines, Splines, partial Ellipses.  You could incorporate an UNDEFINE into the beginning, if you really want to replace the regular JOIN command.  But that means you can't do some of the things the "real" command can do, except by using the .JOIN command name with preceding period to force use of the native command that has been Undefined.

[Patchy]

Thank you Kent.