Draw Curved Lines on Your Map

You can create curved lines in two ways: manually or with the built-in curve (Bezier) tool.

1. Manual Method

• Click several points close together to form a curve.
• Great for short, detailed paths (for example, following a street).
• On large areas, the curve may look less smooth.

2. Built-in Curve Tool (Bezier)

The curve tool automatically creates smooth curves—perfect for long paths like flight routes, rivers, or borders.

How to use the curve tool

1. Select the Line tool.
2. Activate curve mode:
   • Windows: Hold Alt.
   • Mac: Hold Option.
3. While still holding the key, click and hold the mouse on the map to place the starting point. Two guide lines (handles) appear.
4. Keep holding the key and the mouse button, then drag the handles to set the curve’s angle and direction.
5. Release the mouse button (and the key) when the segment looks right.
6. Click once to place the next point of the curved line. Repeat from step 2 for additional segments.

Editing curves

• Click any point (node) on the curve to adjust its shape.

Check this video for an example

Example: Draw a Flight Path

1. Select the Line tool.
2. Hold Alt/Option and click near the departure airport.
3. Extend the guide lines roughly toward the midpoint between departure and destination, slightly above or below to create the arc.
4. Release Alt/Option, then click near the destination airport to set the next point.
5. Adjust the handles or points until the path looks smooth.

You now have a clean, smooth flight path on your map.