The subproject VARIATION AND LINGUISTIC CHANGE IN CATALAN: ANALYSIS AND COMPARISON FROM THE GEOLINGUISTIC AND LEXICOGRAPHICAL DIALECTAL PERSPECTIVES (GEO-LEX-CAT) is part of the coordinated project THE LINGUISTIC ATLAS OF THE IBERIAN PENINSULA: DIGITAL EDITION AND DATA ANALYSIS (ALPI: EDA). Its general purposes are, on the one hand, to complete the introduction of the materials of the localities of the Catalan linguistic domain of the “Atlas Linguístico de la Península Ibérica” (ALPI) and, on the other hand, to develop a number of contrastive and comparative studies of these materials with data included in the “Diccionari català-valencià-balear” (DCVB) and the “Atlas Lingüístic del Domini Català” (ALDC), and also with other works that examine linguistic variation from a geographical perspective.