mossieramm Posted July 24, 2009 Share Posted July 24, 2009 Hi, another polyline question. I have several lines I want to convert to a polyline. For this I use Pedit, then join. When I do this it automaticly becomes a closed polyline. I want an open one. But when I pedit and open the polyline it removes 1 of the line segments, while it was there in the first place. How can I convert to an open polyline without losing lines ??? Thanks for any help. David. Quote Link to comment Share on other sites More sharing options...
NBC Posted July 24, 2009 Share Posted July 24, 2009 Try using MPEDIT. Hmmm, on second thoughts, this would just convert your lines into polylines; it wouldn't join them for you. Quote Link to comment Share on other sites More sharing options...
mossieramm Posted July 24, 2009 Author Share Posted July 24, 2009 I thought I'd give it a go anyway, but I get an Invalid option keyword after the question convert to .... And then only changes one line to a polyline. Quote Link to comment Share on other sites More sharing options...
eldon Posted July 24, 2009 Share Posted July 24, 2009 Pedit will join all line segments that are touching. So you must fool it by making a tiny gap at the joint where you want to, use pedit to make the polyline, then snap the two lines together. The polyline will stay open. Quote Link to comment Share on other sites More sharing options...
mossieramm Posted July 24, 2009 Author Share Posted July 24, 2009 Yes, but then there is a gap, and then I cant use the dwg anymore. And if you have a lot of polylines, altering all those lines so there is small gap is not really an option. What I usually do if I have a few polylines, is convert to polyline with option option, then draw a line in the gap, and with fillet add the line to the polyline. This way you get a closed polyline without it being closed. Quote Link to comment Share on other sites More sharing options...
eldon Posted July 24, 2009 Share Posted July 24, 2009 The technique I was thinking about involves using grips and closing the gap by stretching, so you still have the same number of llines but an open polyline. Of course, if you have many to do, it would take time. Quote Link to comment Share on other sites More sharing options...
mossieramm Posted July 24, 2009 Author Share Posted July 24, 2009 I was hoping it was a setvar to keep the line. This is what I want. This is a closed polyline, note no end point. at point X=1208.8716 Y= 773.9173 Z= 0.0000 at point X=1211.8256 Y= 777.6171 Z= 0.0000 at point X=1211.6760 Y= 774.1041 Z= 0.0000 This is a open polyline, note the same start and end point at point X=1208.8716 Y= 773.9173 Z= 0.0000 at point X=1211.8256 Y= 777.6171 Z= 0.0000 at point X=1211.6760 Y= 774.1041 Z= 0.0000 at point X=1208.8716 Y= 773.9173 Z= 0.0000 Both show the same line in Cad, but not in another programm. Quote Link to comment Share on other sites More sharing options...
eldon Posted July 24, 2009 Share Posted July 24, 2009 Here is a workaround that only involves a few extra clicks. First make the closed Polyline, then break the polyline as shown, then using grips. stretch the broken polyline to close (but polyline remains open). Quote Link to comment Share on other sites More sharing options...
mossieramm Posted July 24, 2009 Author Share Posted July 24, 2009 Here is a workaround that only involves a few extra clicks. First make the closed Polyline, then break the polyline as shown, then using grips. stretch the broken polyline to close (but polyline remains open). Yes, but unfortunatly still involves a lot of work if you have a lot of polylines. Quote Link to comment Share on other sites More sharing options...
ReMark Posted July 24, 2009 Share Posted July 24, 2009 Fuzzy brain this morning so forgive me but didn't the way Pedit used to work the user had to specifically want to join the lines? In other words, lines were converted to polylines but they were not automatically joined. Isn't that what we want to do here or am I really in need of that cup of coffee? Quote Link to comment Share on other sites More sharing options...
mossieramm Posted July 24, 2009 Author Share Posted July 24, 2009 In the pedit command you can still specify that you want them joined, and thats what I want, but not closed. Quote Link to comment Share on other sites More sharing options...
eldon Posted July 24, 2009 Share Posted July 24, 2009 The trouble with AutoCAD that it is all or nothing. You cannot tell Pedit to join everything except the last one. It joins EVERY junction Quote Link to comment Share on other sites More sharing options...
mossieramm Posted July 24, 2009 Author Share Posted July 24, 2009 What I dont get is why it deletes the last line when converting to polyline. Its already drawn, and I'm telling it to remove it. Quote Link to comment Share on other sites More sharing options...
eldon Posted July 24, 2009 Share Posted July 24, 2009 How else can it open a closed polyline, except by deleting the last leg? There is no option to tell it to just undo the last junction. Knowing this, you have to work around its unthinking behaviour. Quote Link to comment Share on other sites More sharing options...
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