CAD tip # 5883:

Question CAD
% platform category

How to measure distance along a curve?

To measure the distance between two points (point and startpoint) measured along a given curve (polyline, arc, spline...) you can use the free LISP utility - CADstudio LGC (command LGC).

The LGC2 command allows to select a curve (near one of its endpoints) and then it measures the distance of picked points on the curve to the selected endpoint of the curve.

The LGC3 command inserts label blocks (stations) at the picked points (you can also use the "Vertices" option to choose all vertices automatically). The "Relative" option will label releative distance from previous marked point. You can then extract their attributes or schedule them to a table.

The LGC4 command draws a dynamic label when you mouve your mouse along the selected curve.

You can download the LGC utility from Download

For advanced dimensioning of lengths and distances along curves, use the newer utilities TraceCurve and DimCurve (see Download and Tips).

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4.12.2007 47176×

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applies to: AutoCAD ·

See also:
Tip 14017:	Voronoi diagrams in AutoCAD.
Tip 13960:	Fermat's spiral in AutoCAD.
Tip 13900:	How to convert truecolor color hue to the nearest AutoCAD ACI color?
Tip 13887:	ClosestPt - the nearest point on another curve
Tip 13737:	Formatting leading zeros in AutoCAD fields (and automatic field update).

Selected tip: Newly created entities do not plot.

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