(Mis)communicating with geographic information system mapping: Part 2-determining data cutoffs

Rodrigo Cantarero, Maria Rosario T. de Guzman, Sarah Taylor, Soo Young Hong, Jeong Kyun Choi

Research output: Contribution to journalArticlepeer-review


The increasing use of geographic information system (GIS) technology in various fields suggests the need for professionals, including those in Extension, to be mindful of communicating data accurately and effectively. This article examines approaches to creating classes or groupings within data as well as the weaknesses of each approach. Data break units discussed in the article include equal intervals, quantiles, and units resulting from natural breaks. Ideal situations for each type of data break are presented. The article emphasizes the need for Extension professionals to consider the effects of data grouping to avoid miscommunication when using GIS mapping.

Original languageEnglish (US)
Article number2TOT4
JournalJournal of Extension
Issue number2
StatePublished - Apr 1 2019


  • Extension and geospatial technologies
  • Geographic information system (GIS)
  • Misrepresentation in GIS use

ASJC Scopus subject areas

  • Education


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