Single Horizontal Regression

You can access this dialog from the following:

• Ribbon: OpenRail Modeling > Regression > Horizontal Regression split-button.

Creates a horizontal geometry element that is a "best fit" to a set of regression points. Best fit means that the orthogonal projection from the element to the regression points is minimized. This tool generates either a line element or an arc element. The length of the element will be all regression data (each point) that can project orthogonally onto the element.

Created element is automatically added to the regression complex, updating the slew values. Elements has standard geometry rules and manipulators, such as radius or extend controls.

Tool works same both for horizontal and vertical workflows. Main difference is how the included nudge functionality works (see Single Element Nudge).