- [Instructor] We're starting a new video now … about drawing simple geometry in AutoCAD, … and we're going to have a look at … polylines, polygons, and splines. … So, we have a new drawing for you. … It's called Polylines.dwg. … It's a blank drawing and it's got … all the appropriate layers set up in it for you, … and you can download it from the library … to follow along with the video. … Once you've opened up the drawing … just make sure you go to your Layers panel … in the home tab on the ribbon, … click on the dropdown here, … and make sure that you select Polylines … as your current drafting layer … because we're going to draw polylines first. … Now, just before we start drawing anything, … down to the status bar, make sure … that your Polar Tracking is on, … make sure that your Object Snap Tracking is on, … make sure that your Object Snaps are on as well. … Now, we're going to have a look at creating a polyline. … Now, these are remarkably similar to your regular lines, … but they have some functionality …
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This will convert your polyline into a “polyline spline” which looks like a spline but inherits properties of the 2D polyline. To convert it into true spline type SPE on the command line and press Enter. This will start Spline Edit command, select “polyline spline” from drawing area and press Enter. The 2D polyline will be converted. After you load the program, AutoCAD prompts you to type PL32 to start. After you enter PL32, AutoCAD prompts you to select 3D polylines, shown highlighted in figure 1. Press to complete your selection, at which time the routine converts the polylines to 2D (figure 2). Note that the 2D polylines retain their layer dependence. Is there a way of converting 3d polylines to polylines with an elevation? I have a dwg of contour information, the contours are 3d polylines, because they are contours the z value is constant all along the line, so there no question what the elevation of the polyline would need to be.
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Learn how to use AutoCAD 2020 to create precise 2D drawings for architecture, construction, manufacturing, and more. This beginner-level course covers the basics of the AutoCAD user interface as well as critical CAD drawing and design techniques. Autodesk Certified Instructor Shaun Bryant leads you step-by-step through drawing simple geometry, creating annotations, and building documentation that is suitable for sharing and printing. By the end of the course, you’ll have the foundational knowledge you need to create simple, annotated drawings and further develop your AutoCAD skills. Topics include:
- Working with the AutoCAD interface
- Drawing simple geometry
- Adding annotations
- Creating title blocks
- Adding layouts and viewports
- Printing and plotting
1h 44m
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While we are much more focusing on AutoCAD basics here, it is necessary to learn how you can convert LINE to Polyline and vice versa.
This might not make sense to you now now, but will surely come in handy when you will come to a point where you need to convert a line to a polyline. An example where this will be needed is when you are working on a project where you need to join a series of line to make it a single object and use the resulting polyline as a PATH.
A concrete example:
Let’s say we need to create an ARRAYPATH in AutoCAD, if we create our path using the LINE command, the path will be made of many line segments, To use this command you need to have all lines converted to a single object. You will then need to convert Line to Polyline.
What is a Polyline (PLINE command)?
In AutoCAD, a Polyline is a single object that is composed of lines and/or arc segments.
How is a LINE different from a Polyline?
A Polyline is made of LINEs. It is not possible to select a segment of a Polyline without selecting the whole.
How to Convert Polyline to LINE
- Polyline: 1
- Lines: 2
Converting a Polyline to a line is a very easy task. it goes like this:
- Select the Polyline
- Click on the Explode icon
and that is it.
How to convert LINE to Polyline
To convert LINE to Polyline, you need to use the PEDIT command, which makes it more complicated than doing the opposite operation.
Here is how to do it:
Offset 3d Polyline Autocad
- Type PEDIT and Press ENTER
- Type M and Press Enter
- Select objects and Press Enter
- Press Enter
- Type J and Press Enter
- Press Enter
- Press Esc (Escape)
Here is how the command window looks at each step
Step 2
Type M and Press Enter
Step 3
Select objects and Press Enter
Step 4
Press Enter
Autocad 3d Polyline
Step 5
Type J and Press Enter
Step 6
Press Enter
Step 7
Press Esc
Trim 3d Polyline Autocad
Hope it helped you. You might also be interested in learning how to convert SPLINE to Polyline.