{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:44:26Z","timestamp":1760237066173,"version":"build-2065373602"},"reference-count":52,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2020,2,22]],"date-time":"2020-02-22T00:00:00Z","timestamp":1582329600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Information"],"abstract":"<jats:p>The Treemap is one of the most relevant information visualization (InfoVis) techniques to support the analysis of large hierarchical data structures or data clusters. Despite that, Treemap still presents some challenges for data representation, such as the few options for visual data mappings and the inability to represent zero and negative values. Additionally, visualizing high dimensional data requires many hierarchies, which can impair data visualization. Thus, this paper proposes to add layered glyphs to Treemap\u2019s items to mitigate these issues. Layered glyphs are composed of N partially visible layers, and each layer maps one data dimension to a visual variable. Since the area of the upper layers is always smaller than the bottom ones, the layers can be stacked to compose a multidimensional glyph. To validate this proposal, we conducted a user study to compare three scenarios of visual data mappings for Treemaps: only Glyphs (G), Glyphs and Hierarchy (GH), and only Hierarchy (H). Thirty-six volunteers with a background in InfoVis techniques, organized into three groups of twelve (one group per scenario), performed 8 InfoVis tasks using only one of the proposed scenarios. The results point that scenario GH presented the best accuracy while having a task-solving time similar to scenario H, which suggests that representing more data in Treemaps with layered glyphs enriched the Treemap visualization capabilities without impairing the data readability.<\/jats:p>","DOI":"10.3390\/info11020123","type":"journal-article","created":{"date-parts":[[2020,2,24]],"date-time":"2020-02-24T03:33:43Z","timestamp":1582515223000},"page":"123","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Depicting More Information in Enriched Squarified Treemaps with Layered Glyphs"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6752-7593","authenticated-orcid":false,"given":"Anderson Greg\u00f3rio Marques","family":"Soares","sequence":"first","affiliation":[{"name":"Computer Science Postgraduate Program, Federal University of Par\u00e1, Bel\u00e9m, PA 66075-110, Brazil"},{"name":"Campus Capanema, Federal Rural University of Amazonia, Capanema, PA 68700-665, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4504-7828","authenticated-orcid":false,"given":"Elvis Thermo Carvalho","family":"Miranda","sequence":"additional","affiliation":[{"name":"Institute of Natural and Exact Sciences, Federal University of Par\u00e1, Bel\u00e9m, PA 66075-110, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8726-951X","authenticated-orcid":false,"given":"Rodrigo Santos do Amor Divino","family":"Lima","sequence":"additional","affiliation":[{"name":"Computer Science Postgraduate Program, Federal University of Par\u00e1, Bel\u00e9m, PA 66075-110, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2193-5783","authenticated-orcid":false,"given":"Carlos Gustavo","family":"Resque dos Santos","sequence":"additional","affiliation":[{"name":"Computer Science Postgraduate Program, Federal University of Par\u00e1, Bel\u00e9m, PA 66075-110, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5872-4827","authenticated-orcid":false,"given":"Bianchi Serique","family":"Meiguins","sequence":"additional","affiliation":[{"name":"Computer Science Postgraduate Program, Federal University of Par\u00e1, Bel\u00e9m, PA 66075-110, Brazil"},{"name":"Institute of Natural and Exact Sciences, Federal University of Par\u00e1, Bel\u00e9m, PA 66075-110, Brazil"}]}],"member":"1968","published-online":{"date-parts":[[2020,2,22]]},"reference":[{"key":"ref_1","unstructured":"Johnson, B., and Shneiderman, B. 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