Draw Sector

Feature Description

  • The Sector command is used to draw a sector object. The application provides two methods to draw sectors: creating circular sectors by drawing circles, and creating elliptical sectors by drawing ellipses.
  • Since a sector is part of a circular/elliptical object, you need to first draw a complete circle/ellipse before creating the sector.

Feature Entry

  • Features Tab -> Feature Drawing Group -> Polygon Drop-down List -> Sector.

Steps

Circular Sector
  1. In the Features tab's Feature Drawing group, click the Polygon drop-down button and select Circular Sector. The cursor will change to a circular sector shape.
  2. Move the mouse to the map. Input the center coordinates in the parameter input box (press Tab to switch between input boxes), then press Enter to confirm the center position.
  3. Move the mouse again and input the radius value in the parameter input box. Press Enter to complete the circle.
  4. Continue moving the mouse and input the start angle of the sector in the parameter input box. Press Enter to confirm.
  5. Move the mouse and input the sweep angle of the sector in the parameter input box. Press Enter to complete the circular sector.
  6. Right-click to cancel the current drawing operation.

Elliptical Sector

  1. In the Features tab's Feature Drawing group, click the Sector drop-down button and select Elliptical Sector. The cursor will change to a sector shape.
  2. Move the mouse to the map. The parameter input box will display real-time coordinates. Input the ellipse's starting point coordinates (press Tab to switch between input boxes), then press Enter to confirm.
  3. Move the mouse. The map will display the real-time length and angle relative to the X-axis (press Tab to switch between parameters). Input the length and angle values, then press Enter to complete the semi-axis.
  4. Continue moving the mouse and input the length of the other semi-axis in the parameter input box. Press Enter to complete the ellipse.
  5. Move the mouse and input the sector's start angle in the parameter input box. Press Enter to confirm.
  6. Input the sector's sweep angle in the parameter input box. Press Enter to complete the elliptical sector.
  7. Right-click to cancel the current drawing operation.
Note:

Sectors drawn in line datasets are ordinary line objects that only record node coordinates. However, sectors in CAD datasets are parametric objects that store parameters like center point, semi-axes, start angle, and sweep angle.