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   Generally whats the difference between the 2? 
On what situation should i use polyline? can i convert line into polyline?
What can line do that polyline can't?

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kelvin.loh Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Newbie Joined: 17.May.2011 Location: Singapore Using: autocad 2010 Status: Offline Points: 12	Topic: line and polyline? Posted: 18.May.2011 at 03:56
	Generally whats the difference between the 2? On what situation should i use polyline? can i convert line into polyline? What can line do that polyline can't?

Vladimir Michl Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Moderator Group Arkance Systems CZ Joined: 26.Jul.2007 Location: Czech Republic Using: Autodesk software Status: Offline Points: 2121	Posted: 18.May.2011 at 08:29
	Line is just one straight segment, Polyline is a series of segments (lines or arcs). Line can be 3D, plain Polyline cannot (there are also 3DPolylines). You can convert Lines to Polylines (e.g. with PEDIT) and Polylines to Lines (with EXPLODE).
	Vladimir Michl (moderator) ARKANCE - https://arkance.world - Autodesk Platinum Partner

kelvin.loh Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Newbie Joined: 17.May.2011 Location: Singapore Using: autocad 2010 Status: Offline Points: 12	Posted: 18.May.2011 at 09:48
	thanks

John Connor Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 01.Feb.2011 Location: United States Using: AutoCAD 2018 Status: Offline Points: 7175	Posted: 18.May.2011 at 11:57
	A rectangle created with the line command consists of four separate entities. The sample rectangle created with one continuous polyline would be treated by AutoCAD as a single entity. Polylines, via the Pedit command, can also be turned into splines and can have curves fitted to them.
	"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>>

heinsite Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 05.Feb.2009 Location: United States Using: AutoCAD 2014 Status: Offline Points: 640	Posted: 19.May.2011 at 05:49
	It's often more what a closed polyline object can do that a series of individual line segements cannot: Provide direct computation of perimeters and areas. Those can be worth the price of admission alone.
	Dave Hein, P.E. Hawaii District Engineer Kona International Airport AutoCAD Certified Professional Autodesk Expert Elite

jirachai Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Newbie Joined: 19.May.2011 Location: Thailand Using: 2008 Status: Offline Points: 3	Posted: 19.May.2011 at 10:30
	The distinction between line and polyline is. line = 2D = ok. polyline = 3D = ok. and can convert polyline by command explode. Therefore if you use just drafting 2D will not have to use the polyline.
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John Connor Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 01.Feb.2011 Location: United States Using: AutoCAD 2018 Status: Offline Points: 7175	Posted: 19.May.2011 at 11:43
	Avoiding the use of polylines in 2D drafting is not a good CAD drafting practice.
	"Humans have a strength that cannot be measured. This is John Connor. If you are reading this, you are the resistance." <<AutoCAD 2015>>

ChristianD Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 18.Jan.2011 Location: United States Using: AutoCAD2010 Status: Offline Points: 3	Posted: 23.May.2011 at 11:55
	Hi, The original Polyline in AutoCAD while a vast improvement over having to use line segments and arcs was a resource hog. each vertex and end were separate entities so a Polyline with two vertexes was four entities. In r14 AutoCAD introduced the lwpolyline (lightweight polyline) which was a single entity. For drawing which included lots of contours or other complex polylines drawing sizes shrank considerably. Big difference in speed and stability as well. Thanks! ________________ pest exterminator

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line and polyline?

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