AutoCAD

How to Change Line Into Polyline in AutoCAD?

Steps to Transform Lines into Polylines in AutoCAD

Converting individual lines into a polyline is a common task in AutoCAD, enhancing workflow and drawing efficiency. Below are the detailed steps to achieve this:

1. Initiate the PEDIT Command

Begin by typing PEDIT into the command line at the bottom of the AutoCAD interface. Press Enter. This command is specifically for editing polylines and will allow various operations on the selected lines.

2. Select the Multiple Option

After entering the command, type M for Multiple and press Enter. This will allow you to make adjustments to multiple objects in one go, making the process more efficient.

3. Identify the Lines to Convert

Click on each line, arc, or spline that you wish to convert into a polyline. You may select them one at a time or use the designated selection tools. Ensure you have all the objects necessary for your design.

4. Confirm Conversion

Once you’ve selected the desired objects, type Y (for Yes) and hit Enter. This action confirms that you want to convert the selected lines, arcs, or splines into a polyline format.

5. Set Precision Parameters

You will then be prompted to specify a precision value. This value determines how accurately the conversion will mimic the original shape of the lines. After entering the preferred value, press Enter to finalize the settings.

6. Exit the Command

Press the Esc key on your keyboard to exit the PEDIT command. You should now see the selected lines combined into a single polyline, streamlining your AutoCAD drawing.

Creating a Polyline from Scratch

If you want to create a new polyline instead of converting existing lines, follow these steps:

1. Access the Draw Panel

Navigate to the Home tab in the AutoCAD interface and locate the Draw panel. Find and click on the Polyline tool.

2. Specify the First Point

Click on the workspace to set the initial point of your new polyline. This is where your drawing will begin.

3. Continue Adding Points

Move your cursor to the next desired location and click again. Repeat this step to shape your polyline as needed. You can create both straight segments and arcs during this step.

4. Complete the Polyline

After establishing the desired shape, press Enter to finalize the polyline creation, ending the command. Your new polyline will now be part of the drawing.

Frequently Asked Questions

1. What is the difference between a line and a polyline in AutoCAD?
A line in AutoCAD is a singular, straight segment that doesn’t connect to other lines. Conversely, a polyline is a series of connected segments (either straight or curved) that acts as a single object, facilitating easier manipulation and editing.

2. Can I explode a polyline back into lines?
Yes, you can use the EXPLODE command to break a polyline back into individual line segments. This is useful if you require structural modifications or adjustments after having created a polyline.

3. How does the precision value affect the conversion from lines to polylines?
The precision value determines how closely the new polyline will resemble the original lines. A higher precision value results in a more detailed and accurate representation but may also increase file size.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.