I am using the Convert Rails to Centerline tool and the centerline produced is not the center between my rail shots and has the incorrect elevation (I assumed it used the low rail elevation but its bringing in an elevation that is lower than the low rail) See below:
The RRT shots are the surveyed rail shots and the yellow triangle with the small circle is the regression point generated from the CL produced using the convert rail tool. I placed a line between the rail shots to show where the center point between the shots should be and as you can see its off. The elevation of the low rail shown here is 106.4230. The elevation of the regression point is 106.4215.
It is not simple as that. See conversation below. The middle of the track is not the midlle of the line created from 2 shots. However, it may not explain the elevation along such small distance. Something to be checked in OpenRail because Rail Track is not anymore supported.
Is there anywhere I can read up on how exactly this line is created?
Unfortunately I don't find any detailed description of the algorithm used to create the centerline
So just checked what is being done. So I was wrong
Added a wiki: Create Regression Line from Rails - OpenRail Wiki - OpenRail - Bentley Communities