Specification of start coordinates of pipeline configuration (Input Table)
Through the input data table ORIGIN the start point of the pipeline polygon is defined in a GLOBAL coordinate system. The global coordinate system shall be a right-handed, orthogonal system:
X-AXIS to be chosen horizontally, with its positive direction preferably more or less along the pipeline polygon as to be defined in the input data table POLYDIF, but any horizontal direction is possible. Z-AXIS to be chosen vertical with its positive direction opposite to gravity, Y-AXIS shall together with the X- and Z-axis form the global right-handed coordinate system.
The start point is also defined in the following coordinate systems:
|•||NODE axis (node numbers: not necessarily starting with 1)|
|•||AX-L axis (length coordinates along spatial pipeline axis)|
|•||AX-LP axis (length coordinates along pipeline polygon projected on horizontal XOY-plane)|
H200112, last changed: 2009-07-16