Fit a line in C3D

Thinking out aloud here, this may not be a C3D solution per se, i.e. of the top of my head I don't recall a C3D utility for it, so the solution is probably just straight AutoCAD drafting. You could generate a line equidistant between the two by drawing pline from say the top "Found IP" point, to perpendicular to the bottom line. Do the same at the other end. Select both lines and right click and check and change their elevation to zero. Then draw a line (or pline) from the midpoint of one to the midpoint of the other.

What about fitting a circle with a 304.50' radius?ÿ between the two lines ??ÿ

I don't use C3D, but I know InRoads and TopoDOT can best fit a line or arc between points or CAD lines using Least Squares. You can also apply weight values to selective points. Both of the commands are within the RailRoad sections of the software, as they are used to calc the best fit alignment between rails. I use it often to split pavement, or curb lines to create centerlines.

Through the weighted values, we should be able to create percentage to equate your?ÿ300' and 309', from specific points.

Send me the DWG and I test it for you.

Posted by: leegreen

I don't use C3D, but I know InRoads and TopoDOT can best fit a line or arc between points or CAD lines using Least Squares. You can also apply weight values to selective points. Both of the commands are within the RailRoad sections of the software, as they are used to calc the best fit alignment between rails. I use it often to split pavement, or curb lines to create centerlines.

Through the weighted values, we should be able to create percentage to equate your?ÿ300' and 309', from specific points.

Send me the DWG and I test it for you.

Lee,?ÿ

I will get back with you this afternoon i didn't shot the top IP yet it is in a bad location for GPS.?ÿ I will have to shot it with my total station.?ÿ

Posted by: leegreen

I don't use C3D, but I know InRoads and TopoDOT can best fit a line or arc between points or CAD lines using Least Squares. You can also apply weight values to selective points. Both of the commands are within the RailRoad sections of the software, as they are used to calc the best fit alignment between rails. I use it often to split pavement, or curb lines to create centerlines.

Through the weighted values, we should be able to create percentage to equate your?ÿ300' and 309', from specific points.

Send me the DWG and I test it for you.

You can do that in C3D also. Works the same way. I'm not sure that will solve the OP's question though. Rather than a best fit line I'm envisioning something with a hinge. I know there was a hinge line command in LDD, but I can't say for sure there is one in C3D as I haven't had to do anything like this in a long time.

To the OP, I'm confused by your sketch. Do you not want the two dimensions to be perpendicular to the bisecting line? Maybe it's just me, but I'm trying to see how I would solve that mathematically and I feel as though I need more information.

Posted by: BlitzkriegBob

Posted by: leegreen

I don't use C3D, but I know InRoads and TopoDOT can best fit a line or arc between points or CAD lines using Least Squares. You can also apply weight values to selective points. Both of the commands are within the RailRoad sections of the software, as they are used to calc the best fit alignment between rails. I use it often to split pavement, or curb lines to create centerlines.

Through the weighted values, we should be able to create percentage to equate your?ÿ300' and 309', from specific points.

Send me the DWG and I test it for you.

You can do that in C3D also. Works the same way. I'm not sure that will solve the OP's question though. Rather than a best fit line I'm envisioning something with a hinge. I know there was a hinge line command in LDD, but I can't say for sure there is one in C3D as I haven't had to do anything like this in a long time.

To the OP, I'm confused by your sketch. Do you not want the two dimensions to be perpendicular to the bisecting line? Maybe it's just me, but I'm trying to see how I would solve that mathematically and I feel as though I need more information.

I have the bearing of the 300 and 309 line just didn't put them on the sketch.?ÿ I found a section line a further west that will work. I believe one of the 2" drill pipe (farmers probably set is out of alignment) so using this will not work.?ÿ But i will give the hinge a try.?ÿ

Maybe I'm not understanding correctly, but it seems like you want the point were a line parallel to the north line and 300' south, intersects a line parallel to the south line and 309' north. In C3D that would be the offset command. It would be a very weak solution.

With all those bearings and distances it should be pretty easy to work out. What are the bearings on the two lines?

Since you know the bearings of the 300' and 309' lines, a few bearing/distance and intersection calcs will get the results.?ÿ See pic.