Why is the param curve not the same as manual calculation?

Revit
1

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image2137×1363 295 KB

What I understand is that the param curve is from 0 to 1, if there is a line with a start point x = 1 and end x = 10, if 0.1 of x = 1 should be at x = 2, but why is it x = 1.9

2

Your line is 9 units long, so x = 1 + 0.1*9 = 1.9.

Make it a line from 0 to 10 and you’ll get 1, then 2 if you use parameter 0.2

If you want 2 on that line currently you’d use 0.11111(recurring).

3

Hi,
your segment measures 9 units, you ask for 10%
you therefore arrive at 0.9,
nothing disturbing
edit:late as usual
Sincerely
christian.stan