CAD Forum discussion (EN) : line and polyline? https://www.cadforum.cz/forum_en/ Sat, 16 May 2026 13:52:54 +0000 Mon, 23 May 2011 11:55:08 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://www.cadforum.cz/forum_en/RSS_post_feed.asp?TID=5911 <![CDATA[CAD Forum discussion (EN)]]> https://www.cadforum.cz/forum_en/forum_images/web_wiz_forums.png https://www.cadforum.cz/forum_en/ <![CDATA[line and polyline? : Hi, The original Polyline in AutoCAD...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15447&title=line-and-polyline#15447 Author: ChristianD
Subject: 5911
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!
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]]> Mon, 23 May 2011 11:55:08 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15447&title=line-and-polyline#15447 <![CDATA[line and polyline? : Avoiding the use of polylines...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15396&title=line-and-polyline#15396 Author: John Connor
Subject: 5911
Posted: 19.May.2011 at 11:43

Avoiding the use of polylines in 2D drafting is not a good CAD drafting practice.  ]]> Thu, 19 May 2011 11:43:20 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15396&title=line-and-polyline#15396 <![CDATA[line and polyline? : The distinction between line and...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15395&title=line-and-polyline#15395 Author: jirachai
Subject: 5911
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.

]]> Thu, 19 May 2011 10:30:53 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15395&title=line-and-polyline#15395 <![CDATA[line and polyline? : It&#039;s often more what a closed...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15390&title=line-and-polyline#15390 Author: heinsite
Subject: 5911
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.]]> Thu, 19 May 2011 05:49:59 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15390&title=line-and-polyline#15390 <![CDATA[line and polyline? : A rectangle created with the line...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15362&title=line-and-polyline#15362 Author: John Connor
Subject: 5911
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.]]> Wed, 18 May 2011 11:57:53 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15362&title=line-and-polyline#15362 <![CDATA[line and polyline? : thanks ]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15360&title=line-and-polyline#15360 Author: kelvin.loh
Subject: 5911
Posted: 18.May.2011 at 09:48

thanks

]]> Wed, 18 May 2011 09:48:58 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15360&title=line-and-polyline#15360 <![CDATA[line and polyline? : Line is just one straight segment,...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15359&title=line-and-polyline#15359 Author: Vladimir Michl
Subject: 5911
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).
]]> Wed, 18 May 2011 08:29:13 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15359&title=line-and-polyline#15359 <![CDATA[line and polyline? : Generally whats the difference...]]> https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15357&title=line-and-polyline#15357 Author: kelvin.loh
Subject: 5911
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?
]]> Wed, 18 May 2011 03:56:36 +0000 https://www.cadforum.cz/forum_en/forum_posts.asp?TID=5911&PID=15357&title=line-and-polyline#15357