Toolbar  Menu 


Analyze Diameter 
The Diameter command reports the diameter of a curve at a specified point.
Move the mouse cursor along a curve.
The Units pane on the status bar reports the diameter of the curve at the current cursor location.
Pick a point on the curve.
The diameter and radius report to the commandline.
If the diameter and radius return "infinite", the curve is linear (no curvature) at the picked location, or has the shape of a line or a polyline.
Commandline options  

SelectCurve 
Limit the selection to a specified curve. Press Enter to select any curve. 
MarkDiameter 
Places a point object at the evaluated point on a curve and creates a curvature circle through that point. 
Units 
Set the units for the length display. This option is only available if no objects are selected. 
Type subcrv to select part of a curve as input. 
Toolbar  Menu 


Analyze Radius 
The Radius command reports the radius of a curve at a specified point.
Move the mouse cursor along a curve.
The Units pane on the status bar reports the radius of the curve at the current cursor location.
Pick a point on the curve.
The diameter and radius report to the commandline.
If the diameter and radius return "infinite", the curve is linear (no curvature) at the picked location, or has the shape of a line or a polyline.
Commandline options  

SelectCurve 
Limit the selection to a specified curve. Press Enter to select any curve. 
MarkRadius 
Places a point object at the evaluated point on a curve and creates a curvature circle through that point. 
Units 
Set the units for the length display. This option is only available if no objects are selected. 
Type subcrv to select part of a curve as input. 
The Length, Radius, and Distance commands are nestable. This means that if Rhino is asking for a distance in a command, you can use these commands to measure another object or distance and the resulting value will be feed to the command as if you had typed the number.
Rhinoceros 8 © 20102024 Robert McNeel & Associates. 07Jun2024