KOMPAS-3D v23

To plot a point, use the coordinate system corresponding to the type of coordinates. You can specify the point position in rectangular (X, Y, Z), cylindrical (R, A, Z) or spherical (R, A, B) coordinates.

Rectangular coordinate system matches the coordinate system of the point.

Cylindrical coordinate system is positioned relative to the coordinate system of the point as follows:

•the origin of the cylindrical coordinate system coincides with the origin of the coordinate system of the point,

•the Z axis of the cylindrical coordinate system coincides with the Z axis of the coordinate system of the point.

The value of the A coordinate defines the rotation angle α of the point which is counted in the XY plane from the X axis counterclockwise (see Figure).

The value of the R coordinate determines distance from the point to the Z axis (i.e. the cylinder radius).

Plotting a point by cylindrical coordinates

XYZ is the coordinate system of a point

The origin of the spherical coordinate system coincides with the origin of the coordinate system of the point.

The value of the A coordinate defines the azimuth angle α which is counted in the XY plane of the point coordinate system from the X axis counterclockwise. In the XY plane, the OC beam is conducted at an azimuthal angle to the X axis.

The value of the B coordinate defines the zenith angle β which is counted from the Z axis in the plane that passes through the Z axis and OA ray.

The value of the R coordinate determines distance from the point to the origin of the coordinates (i.e. the sphere radius).

Plotting a point by spherical coordinates is shown in Figure.

Plotting a point by spherical coordinates

XYZ is the coordinate system of a point