Today I Learned about the DMIS Arc command

Command Syntax:

**F(name)=FEAT/ARC, dir, coord, x(r), y(a), z(h), i, j, k, rad, a1, a2**

Parameters:

**dir** = **INNER** this is a inside arc, **OUTER** this is an outside arc ( these are partial circles)

**coord** = **CART** rectangular coordinates, **POL** polar coordinates

**x(r)** = the nominal X coordinate (R-Radius if the **coord** option is **POL**) position for the arc

**y(a)** = the nominal Y coordinate (A-Angle if the **coord** option is **POL**) position for the arc

**z(h)** = the nominal Z coordinate (H-Height if the **coord** option is **POL**) position for the arc

**i** = X vector component of the plane of the arc

**j** = Y vector component of the plane of the arc

**k** = Z vector component of the plane of the arc

**rad** = radius of the arc

**a1** = start angle of the arc. The start angle is defined by the current coordinate system

**a2** = end angle of the arc. The start angle is defined by the current coordinate system

The command syntax should look something like this:

**F(ARC1)=FEAT/ARC,INNER,CART,-4,-3,-0.1,0,0,1,0.5,0,180**

This example defines an arc to be measured at X = -10, Y = -2.0, Z= -0.10 as shown. The arc is in the Z work plane so the vector is 0, 0, 1. The arc is 0.5 (or a diameter of 1) and will start at 0 and probe a 180 degree angle.

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