COGO Arc Examples
This topic provides examples of the various COGO arc commands available when creating COGO collections and computing parcels.
Arc by Bearing/Azimuth of Chord (ABC) – This arc is not dependent on the previous line segment for its direction. It requires a bearing or azimuth of a chord (1 above), radius distance (2 above), and an arc length, chord length, or delta angle (3 above).
Arc by Bearing/Azimuth of Radial (ABR) - This arc is not dependent on the previous line segment for its direction. It requires a bearing or azimuth of a radial (1 above), radius distance (2 above), and an arc length, chord length, or delta angle (3 above).
Arc by Bearing/Azimuth of Tangent (ABT) - This arc is not dependent on the previous line segment for its direction. It requires a bearing or azimuth of a tangent (1 above), radius distance (2 above), and an arc length, chord length, or delta angle (3 above).
Arc by Coordinates (PCPIPT method) (AC) – This arc is not dependent on the previous line segment for its direction. It requires a point-of-intersection (PI) coordinate (1 above) and a point-of-tangent (PT) coordinate (2 above).
Arc by Deflection angle of Chord (ADC) – This arc direction is relative to the previous straight or curved line direction (in this example, a straight line is used) and requires a chord deflection angle (1 above), a radius distance (2 above), and an arc length, chord length, or delta angle (3 above).
Arc by Deflection angle of Radial (ADR) - This arc direction is relative to the previous straight or curved line direction (in this example, a straight line is used) and requires a radial deflection angle (1 above), a radius distance (2 above), and an arc length, chord length, or delta angle (3 above).
Arc by Deflection angle of Tangent (ADT) - This arc direction is relative to the previous straight or curved line direction (in this example, a straight line is used) and requires a tangent deflection angle (1 above), a radius distance (2 above), and an arc length, chord length, or delta angle (3 above).
Arc by Interior angle of Chord (AIC) – This arc direction is relative to the previous straight or curved line direction (in this example, a straight line is used) and requires an interior chord angle (1 above), a radius distance (2 above), and an arc length, chord length, or delta angle (3 above).
Arc by Interior angle of Radial (AIR) – This arc direction is relative to the previous straight or curved line direction (in this example, a straight line is used) and requires an interior radial angle (1 above), a radius distance (2 above), and an arc length, chord length, or delta angle (3 above).
Arc by Interior angle of Tangent (AIT) - This arc direction is relative to the previous straight or curved line direction (in this example, a straight line is used) and requires an interior tangent angle (1 above), a radius distance (2 above), and an arc length, chord length, or delta angle (3 above).
Arc Tangential (AT) – This arc is tangent to the previous straight or curved line direction (in this example, a straight line is used) and requires a radius distance (1 above) and an arc length, chord length, or delta angle (2 above).
Arc eXtend (tangential) (AX) – This arc is a tangential extension of the previous arc line segment and requires an arc length, chord length, or delta angle (1 above).
