Unitize

Unitize[x]

gives 0 when x is zero, and 1 when x has any other numerical value.

Details

  • Unitize[x,dx] gives 0 for any x with magnitude less than dx.
  • Unitize[x] gives 0 whenever x==0 yields True.
  • Unitize[x] in general works using PossibleZeroQ, and can handle numbers represented in symbolic form.
  • Unitize has attribute Listable.

Examples

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Basic Examples  (2)

Convert numerical values to zero or one:

Replace values in a matrix with zeros or ones:

Show a plot that emphasizes structure:

Applications  (1)

Determine if a sparse matrix is structurally symmetric:

Wolfram Research (2007), Unitize, Wolfram Language function, https://reference.wolfram.com/language/ref/Unitize.html.

Text

Wolfram Research (2007), Unitize, Wolfram Language function, https://reference.wolfram.com/language/ref/Unitize.html.

CMS

Wolfram Language. 2007. "Unitize." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/Unitize.html.

APA

Wolfram Language. (2007). Unitize. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Unitize.html

BibTeX

@misc{reference.wolfram_2023_unitize, author="Wolfram Research", title="{Unitize}", year="2007", howpublished="\url{https://reference.wolfram.com/language/ref/Unitize.html}", note=[Accessed: 19-March-2024 ]}

BibLaTeX

@online{reference.wolfram_2023_unitize, organization={Wolfram Research}, title={Unitize}, year={2007}, url={https://reference.wolfram.com/language/ref/Unitize.html}, note=[Accessed: 19-March-2024 ]}