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In this paper, we describe a research project whose aim is to investigate a cartographic solution able to represent dynamics, movements and changes that underlie possible problems. The solution we propose is based on the chorem concept. It represents an immediate synthesis of data of interest, and provides expert users with both a global view of objects and phenomena, and an insight into a specific issue. Based on preliminary studies, we first provide a formal definition and classification of chorems in terms of structure and meaning, meant to homogenize chorem construction and usage. Then, a system to generate chorematic maps from available data sets is described and an XML-like language, named ChorML is specified, enabling system modules communication. In order to validate our approach, we exemplify the construction of a chorematic map, which depicts the most significant flows of migrating population in Italy in 2000. Such a synthesis may represent the starting point for further processing tasks aimed to derive spatial analysis data, as well as to support expert users in decision making.<\/jats:p>","DOI":"10.1057\/palgrave.ivs.9500186","type":"journal-article","created":{"date-parts":[[2008,7,31]],"date-time":"2008-07-31T06:43:38Z","timestamp":1217486618000},"page":"253-264","source":"Crossref","is-referenced-by-count":15,"title":["A chorem-based approach for visually synthesizing complex phenomena"],"prefix":"10.1177","volume":"7","author":[{"given":"Vincenzo","family":"Del Fatto","sequence":"first","affiliation":[{"name":"Dipartimento di Matematica e Informatica, Universit\u00e0 di Salerno, Via Ponte don Melillo 84084 Fisciano (SA), Italy"},{"name":"LIRIS \u2013 INSA de Lyon 69621 \u2013 Villeurbane Cedex - France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert","family":"Laurini","sequence":"additional","affiliation":[{"name":"LIRIS \u2013 INSA de Lyon 69621 \u2013 Villeurbane Cedex - France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karla","family":"Lopez","sequence":"additional","affiliation":[{"name":"LIRIS \u2013 INSA de Lyon 69621 \u2013 Villeurbane Cedex - France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Monica","family":"Sebillo","sequence":"additional","affiliation":[{"name":"Dipartimento di Matematica e Informatica, Universit\u00e0 di Salerno, Via Ponte don Melillo 84084 Fisciano (SA), Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Giuliana","family":"Vitiello","sequence":"additional","affiliation":[{"name":"Dipartimento di Matematica e Informatica, Universit\u00e0 di Salerno, Via Ponte don Melillo 84084 Fisciano (SA), Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2008,9,1]]},"reference":[{"key":"bibr1-PALGRAVE.IVS.9500186","doi-asserted-by":"crossref","first-page":"4","DOI":"10.3406\/mappe.1986.2298","volume":"4","author":"Brunet R.","year":"1986","journal-title":"Mappemonde"},{"key":"bibr2-PALGRAVE.IVS.9500186","first-page":"83","volume-title":"8th International Conference on Visual Information Systems VISUAL 2005","author":"Klippel A","year":"2007"},{"key":"bibr3-PALGRAVE.IVS.9500186","first-page":"270","volume-title":"Figures du projet territorial.","author":"Lardon S.","year":"2003"},{"key":"bibr4-PALGRAVE.IVS.9500186","first-page":"2","volume":"4","author":"Cheylan J","year":"1990","journal-title":"Mappemonde"},{"key":"bibr5-PALGRAVE.IVS.9500186","first-page":"41","author":"Th\u00e9ry H.","year":"1990","journal-title":"Mod\u00e8les graphic et repr\u00e9sentations spatiales"},{"key":"bibr6-PALGRAVE.IVS.9500186","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-76414-4_52"},{"key":"bibr7-PALGRAVE.IVS.9500186","unstructured":"Movimento migratorio della popolazione residente, anno 2000 [WWW document] www.istat.it\/dati\/catalogo\/20050325_00\/ (accessed 20 March 2008)."},{"key":"bibr8-PALGRAVE.IVS.9500186","doi-asserted-by":"crossref","first-page":"44","DOI":"10.3406\/mappe.1994.1136","volume":"2","author":"Barbe F.","year":"1994","journal-title":"Mappemonde"},{"key":"bibr9-PALGRAVE.IVS.9500186","doi-asserted-by":"publisher","DOI":"10.1007\/3-540-63238-7_24"},{"key":"bibr10-PALGRAVE.IVS.9500186","unstructured":"Koperski K, Adhikary J, Han J. 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