Arcs (circles)

grd_type: grd_arc

GRD arc features represent circular arc features and are either 2D or 3D. The coordinate on the feature contains the location of the centre. Arc features may have the following special attributes associated with them.

Attribute Name

Contents

grd_rotation

The rotation of the arc, in degrees counterclockwise.

Range: 0 .. 360.0

grd_primary_axis

The radius of the arc.

Range: Any real number

grd_secondary_axis

The radius of the arc.

Range: Any real number

grd_start_angle

How FME calculates start_angle and sweep_angle

Range: 0 .. 360.0

grd_sweep_angle

How FME calculates start_angle and sweep_angle

Range: Any real number

grd_type: grd_circle

GRD circle features represent closed circular arc features and may be either 2D or 3D. The coordinate on the feature contains the location of the centre. Circle features may have the following special attribute associated with them.

Attribute Name

Contents

grd_primary_axis

The radius of the circle.

Range: Any real number

grd_type: grd_ellipse

GRD ellipse features represent closed elliptical arc features and may be either 2D or 3D. The coordinate on the feature contains the location of the centre. Ellipse features may have the following special attributes associated with them.

Attribute Name

Contents

grd_rotation

The rotation of the ellipse, in degrees counterclockwise.

Note: All ellipses must have a rotation that is a multiple of 90 degrees. If an invalid rotation is passed in to the GRD writer, the ellipse is written out as a polygon instead.

Range: 0 .. 360.0

grd_primary_axis

The radius of the longest axis of the ellipse.

Range: Any real number

grd_secondary_axis

The radius of the shortest axis of the ellipse.

Range: Any real number