Hello, I need to figure out how i can round numbers to the closest value in the set but so that it is always rounded to the smaller value. [image] so if i have 9,55 and possible values are 9,4 and 9,6 so resulting rounded number will be 9,4 and not 9,6

You don’t even need the domains… [image] round to lower.gh (12.7 KB) I think the floor trick by Daniel is the shortest and best answer here.

Here’s a way. [image] inset_below.gh (11.6 KB) It’s a bit overcomplicated due to the fact that pufferfish is taking the value above in case one of your value is exactly between two values from your set. In the inner group we check if by taking one index lower, we also get a difference of 0 (mat…

[image] Help Us Help You Grasshopper Asking questions and getting answers is what this forum is all about. Although people are generally very helpful, there are things you can do to improve your chances of getting good and quick answers. Below you will find som…

Here’s another easier approach using number domains: [image] round to lower.gh (12.8 KB) Edit: One thing I forgot: The list of target values must be sorted ascending.

If you want to round down to the closest multiple of 0.2 below: [image]

thank you guys :slight_smile: different approaches, the simplest one is the winner

What would need to be added to the expression so 4.041 is output as 4.0 instead of just 4?

You can use Format [image] How to format numbers/text to 2 decimal places? Grasshopper Hope it helps you out… [Canvas%20at%2012%3B51%3B39]

Thanks Daniel. That’s what I did until @kev.r pointed out it can slow down a definition… [image] Grasshopper - Strange rounding issue after rotating a rectangle Grasshopper I generally use an Expression component for rounding (or embed the expression in an out…

Round to nearest but always to smaller value

Grasshopper

martinsiegrist (Martin Siegrist) January 16, 2023, 2:31pm 11

Thanks Daniel. That’s what I did until @kev.r pointed out it can slow down a definition…

Topic		Replies	Views
Pulling numbers up or down to match a predefined list? Grasshopper windows	6	760	November 9, 2021
Round the value to the nearest 0 or 5 Grasshopper windows	2	171	September 10, 2025
Rounding numbers Grasshopper windows	5	673	May 5, 2021
Round to the nearest decimal (say nearest .125) Grasshopper	12	11418	October 10, 2019
Round the Value to Nearest Ceiling Value of Given List Pufferfish windows	21	2871	June 1, 2021

Round to nearest but always to smaller value

Related topics