ArrayComponents

ArrayComponents[array]

gives an array in which all identical elements of array are replaced by an integer index representing the component in which the element lies.

ArrayComponents[array,level]

finds the identical elements at the specified level in array

ArrayComponents[array,level,rules]

uses a rule or a list of rules for specifying the labels.

Details

  • ArrayComponents returns a label matrix where identical elements are represented by consecutive non-negative integers.
  • Occurrences of zeros or None in array are always labeled with zeros.
  • ArrayComponents can be used to canonicalize label matrices.

Examples

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Basic Examples  (3)

Components in a symbolic array:

Components in the first level of an array:

Label identical elements in a list:

Scope  (3)

ArrayComponents works with arbitrarily nested lists of symbols:

Label all positive integers with a specific label:

Use a specific label for a component:

Applications  (1)

Normalize a label matrix with missing labels:

Wolfram Research (2010), ArrayComponents, Wolfram Language function, https://reference.wolfram.com/language/ref/ArrayComponents.html (updated 2012).

Text

Wolfram Research (2010), ArrayComponents, Wolfram Language function, https://reference.wolfram.com/language/ref/ArrayComponents.html (updated 2012).

CMS

Wolfram Language. 2010. "ArrayComponents." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2012. https://reference.wolfram.com/language/ref/ArrayComponents.html.

APA

Wolfram Language. (2010). ArrayComponents. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ArrayComponents.html

BibTeX

@misc{reference.wolfram_2023_arraycomponents, author="Wolfram Research", title="{ArrayComponents}", year="2012", howpublished="\url{https://reference.wolfram.com/language/ref/ArrayComponents.html}", note=[Accessed: 02-December-2023 ]}

BibLaTeX

@online{reference.wolfram_2023_arraycomponents, organization={Wolfram Research}, title={ArrayComponents}, year={2012}, url={https://reference.wolfram.com/language/ref/ArrayComponents.html}, note=[Accessed: 02-December-2023 ]}