How do I convert a 3D line to a 2D line in AutoCAD?

How do you convert 3D polyline to 2D?

Use the Convert 3D To 2D Polylines command to convert 3D to 2D polylines. The new polyline will take on the elevation of the start point of the 3D polyline. Click Modify tab Design panel Convert 3D To 2D Polylines Find. Select the polyline(s) to convert.

How do you flatten a 3D polyline in AutoCAD?

Use the FLATTEN command to change the Z values of all lines, arcs, and polylines to 0.

1. Turn off or freeze any hatch layers with hatch patterns so they are not included in the selection.
2. Type FLATTEN at the command line.
3. Select all objects and press the Enter key.
4. Type N for No when prompted to remove hidden lines.

How do you convert a polyline to a 2D feature line?

To convert a 3D Polyline to a 2D Polyline, enter CONVERT3DPOLYS at the command line and select lines to be converted. Then you also may want to change elevations of resulting polylines to zero elevation.

How do you make a 2D polyline in AutoCAD?

How do you use Pline in AutoCAD?

1. Click PLINE.
2. Specify the first point of the polyline.
3. Specify the endpoint of the first segment.
4. Continue specifying segments as needed. …
5. Press Enter to end the command, or choose Close Shape to close the polyline to its original start point.

What is flatten command in AutoCAD?

FLATTEN creates a 2D representation of selected objects and projects them onto the current viewing plane. FLATTEN results in 2D objects that retain their original layers, linetypes, colors and object types where possible.

How do I make a surface feature line?

Right-click a feature line Add To Surface As Breakline. Note: If there are no surfaces in the drawing, you are prompted to create one. In the Select Surface dialog box, select a surface, and click OK. Or, select the Add button to create a new surface.

Can you convert a feature line to a polyline?

Click Home tab Create Design panel Create Polyline From Corridor Find. In the drawing, click the corridor feature line. If you make an ambiguous selection, the Select A Feature Line dialog box is displayed. … The feature line is exported as a polyline.

What is the difference between line and polyline?

The first, it’s important to note the difference between a line or line segment, and a polyline. A line is simply a separate line or segment that is not joined to another line. While a Polyline indicates two or more lines have been joined.

How do I merge lines in AutoCAD?

To Join Polylines, Splines, Lines, and Arcs Into a Single…

1. Click Home tab Modify panel Edit Polyline. Find.
2. Select a polyline, spline, line, or arc to edit. …
3. Enter j (Join).
4. Select one or more polylines, splines, lines, or arcs that are located end to end.
5. Press Enter to end the command.