PositionLargest
PositionLargest[list]
gives the positions of the numerically largest value in list.
PositionLargest[list,n]
gives the positions of the first n largest values.
PositionLargest[list,n,orderfun]
gives the positions of the n largest values in list as determined by orderfun.
Details
- PositionLargest by default compares values by numerical magnitude, returning the list of positions of the largest value or n largest values.
- PositionLargest[list] gives a single list for the largest value.
- PositionLargest[list,n] gives a list of n sublists for the n largest values, or as many as are available if fewer than n.
- PositionLargest expects all objects to be comparable with one another, based on the ordering function.
Examples
open allclose allBasic Examples (2)
Scope (6)
Find positions of the two largest values in an association:
PositionLargest works with arbitrary numeric values:
PositionLargest can work with orderings of non-numeric data:
PositionLargest uses numeric ordering by default:
Instead use canonical ordering:
PositionLargest works on lists of Quantity expressions:
PositionLargest works on lists of DateObject expressions:
Properties & Relations (4)
Find positions of the largest elements in a random list:
Compare to results using Position and Max:
PositionLargest gives positions of all the largest elements:
TakeLargest will only give as many element positions as are requested:
One must specify the count of maximal elements to get all positions corresponding to the largest element using TakeLargest:
Find positions of the largest elements in a random list:
One can use Ordering once the number of largest elements is known:
Find positions of the largest elements in a random list:
FindPeaks locates positions of all local maximal values:
When you remove all peak positions that do not correspond to the global maximum value, you lose positions if there happen to be consecutive peaks:
Possible Issues (2)
If fewer than the requested count of largest values are present, PositionLargest will give as many as are present:
If the elements are not comparable, PositionLargest will not evaluate:
Text
Wolfram Research (2022), PositionLargest, Wolfram Language function, https://reference.wolfram.com/language/ref/PositionLargest.html.
CMS
Wolfram Language. 2022. "PositionLargest." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/PositionLargest.html.
APA
Wolfram Language. (2022). PositionLargest. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/PositionLargest.html