Grasshopper

algorithmic modeling for Rhino

random: how to force unique results?

Hi guys!

I was trying to do a random selection of a fixed number of non-repeatable elements in a list. I mean that every randomly chosen element must be unique.

In the screenshot attached you'll see how I was genereting the list that I would use as list of indexes for the list of elements...

But there is often (and obviously...) at least one index repeated.

Any idea?

Thanks so much,

Filippo

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Permalink Reply by David Rutten on August 1, 2012 at 6:01am

It's typically a better idea to generate a non-random list of unique values (that is easy after all) and then randomize it. Either use RandomReduce if you have too many values and you can use Jitter to randomize the order of the values.

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Filippo Zampese on August 1, 2012 at 8:55am

Thanks, It works!

Permalink Reply by Yasser Hafizs on August 1, 2012 at 9:42am

Sorry, for re-post David :p

I don't see your post before

Permalink Reply by Yasser Hafizs on August 1, 2012 at 6:04am

Hi Filippo,

Try using Jitter component. 

Permalink Reply by Filippo Zampese on August 1, 2012 at 8:54am

Thanks! It is exactly what I was looking for.

Thanks again!

Permalink Reply by Yasser Hafizs on August 1, 2012 at 9:45am

You're welcome

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