Basic Maths Question

Not strictly a GH question.. if I have a list of numbers, how might I "compress" the list to bring each value closer to the total average. Not remapping but "Flattening," so to speak?

It's such simple mathmatical problem but i just cant figure it out.

Thanks

Replies to This Discussion

Permalink Reply by Ethan Gross on January 4, 2016 at 11:43am

Hi Matt,

This will bring your values closer to the average.

Attachments:

Flatten toward average.gh, 8 KB

Permalink Reply by Matt on January 4, 2016 at 11:48am

Perfect thank you!

Permalink Reply by Nenov Ivo on January 4, 2016 at 11:44am

I'm not sure i really understood your question. Just use the remap numbers component.

Permalink Reply by Nenov Ivo on January 4, 2016 at 11:44am

hehe my bad sorry

Permalink Reply by Matt on January 4, 2016 at 11:48am

haha no worries!

Permalink Reply by Matt on January 4, 2016 at 11:56am

yep I think it is technically remapping but the remap component alone still keeps the relative differences between the values, Ethan's solution is almost what I need but yours looks intriguing so I will have a look.

Permalink Reply by Joseph Oster on January 4, 2016 at 11:58am

Sounds like remapping to me - "Flattening" has an entirely different meaning in GH. Maybe "squish" is a better technical term? (re-posting because I left out the 'Bounds (Bnd)' component to get the actual domain of the random numbers)

Permalink Reply by Joseph Oster on January 4, 2016 at 12:27pm

Details, details! Too hasty in my reply...

I had reversed the inputs for creating the new domain. :( Was puzzled that the two rows of points didn't seem to align as expected and shocked when I connected the two sets of points with lines that crossed in the middle!?

They still don't align unless you shift the second row in X due to the average (48.438 in this case) being different than the middle of the original domain (50), but they are now spaced proportionally as expected.

P.S. Ethan's code and mine produce different results, which is interesting...?

Attachments:

ReMap_2016_Jan4c.gh, 18 KB

Permalink Reply by Matt on January 4, 2016 at 1:29pm

Sorry I deleted my last reply because it made no sense! Here is a more clear example i hope..

Trying a different approach but looking for a way to "merge" the two lists of values corresponding to the pipes lengths while maintaining control. So for example in 0-1, 0 would the the image on the left, 1 the right and 0.5 in between

Attachments:

Lists.gh, 13 KB

Permalink Reply by Joseph Oster on January 4, 2016 at 1:55pm

This is my response to your deleted question - it made sense to me. I used two 'Random Reduce' components with inverse values from zero to one ("Variable X" slider control) applied separately to the lengths of two lists (so the lists can be of different lengths).

This simple illustration plots points in two separate ways: "Pan" and "Mixed", which affect the X coord while the mixed list results define the Y coord: