Point along nurbscurve

Revit
1

Hi guys ,
I am trying to position a point at chord length on CurbsCurve but apparently the node for Curve.PointAtChordLength is only for polycurves. Any ideas how i could do the same for NurbsCurves? Thank you in advance.

nurbs%20curve
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2

The error message is saying that it expects a double for the parameterLocation input and you are supplying a function instead. Try with a number, if you want the chord length to evaluate from the start of the curve, then use 0 (the dafult value is zero, so you can leave the input unused)

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3

Hi Thomas and thanks a lot for your time. Well I have selected a NurbsCurve line from Revit with ‘Select model Element’ then created an ‘Element.curves’ and I am trying to position my points along this curve. You suggest me to supply a double instead of a function at the parameterLocation but i dont quite understand how to translate my function into a double. Any ideas?

4

Either don’t import a start point as Thomas said, or provide this node with an input (perhaps the original curve).

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Be careful with parameterization of the nurbs curve as it’s often not what you expect due to the nature of nurbs curves themselves.

5

Alright, i ll try this one this time. Thank you all very much guys ! I am trying to learn dynamo by myself and this forum does a great job sharing knowledge ! :smiley: cheers!