Matt McLean

Tip of the Week #52 - Creating a Point On-Line Between Two 3D Points

Blog Post created by Matt McLean on Aug 17, 2018

In many situations it is useful to create a point between two 3D points, with an interpolated elevation and a desired horizontal offset from one of the lines; here's how that can be done easily and efficiently!

 

I have two points separated by 141m horizontal, 10m vertical. In the plan view I have the point elevation displayed.

 

Short version:

Create Linestring between the two points. (direction matters)

On the Edit ribbon, use the break line command.

Create a point at End of line. (In Create Point drop-down)

 

Detailed version: 

First is to Create Linestring between the two points, starting from the point you want to set the offset distance.


I have drawn the line from point 1 to 2. After opening the Create Linestring command, you can press "Enter" to skip the first menu, and go directly to selecting the start and end points of your line. After clicking the two points, pressing "Esc" twice will exit the command.

 

Next, go to Edit > Lines > Break

 

Select the line (if it's not already), and enter the distance along the line you would like to create the new point. (This is why the direction the line was created matters) I would like my new point to be 50m from the start point.

 

Hit Break or press "Enter" on the keyboard.

 

Next, CAD > Points > Create Point (select the drop down) > End

 

Select the end of the broken line, and click Add or press "Enter". A point will be created here.

 

 If the linestrings are not desired, they can be deleted.

 

And there you have it! 

 

TBC - From Field to Finish With Confidence

Outcomes