how to subtract each item in a list from the following one?

I have a list of values, and I want to get the list of "intervals" between the values.

I can do this with the "brute force and awkwardness" method -- shift the list by one, drop the last value from the original list, then feed those lists into a subtract component -- but I have a nagging feeling there's a more compact and elegant way.

Is there?

Replies to This Discussion

Permalink Reply by Michael Pryor on February 3, 2014 at 1:29pm

Here is a non scripted way, not sure if its the best.

Permalink Reply by Sridevi Koonath on February 4, 2014 at 3:06am

Alternatively, there is a Grasshopper component called "Relative Differences" (screenshot below) that you can use.

Permalink Reply by David Rutten on February 4, 2014 at 3:44am

There's also Consecutive Domains:

David Rutten

david@mcneel.com

Permalink Reply by Sridevi Koonath on February 4, 2014 at 4:35am

Dang! I suspected that there should be a domain component that can do this, but I was too lazy to check..

Permalink Reply by Sridevi Koonath on February 4, 2014 at 4:36am

Hehe...

Permalink Reply by Michael Pryor on February 4, 2014 at 9:25am

Nice, I knew it existed but could not remember the name and the icon just did not click for me. It's not as obvious as the mass addition icon.

Permalink Reply by Dave Johnson on February 4, 2014 at 11:37am

Thanks everyone! It's always nice to have options.

Permalink Reply by David Rutten on February 4, 2014 at 1:06pm

The icon actually shows what happens when you input points instead of numbers. You then get all the vectors along which you have to move a point in order to 'touch' all the original points.

David Rutten

david@mcneel.com

RSS