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Open AccessArticle

A Practical Procedure to Integrate the First 1:500 Urban Map of Valencia into a Tile-Based Geospatial Information System

Department of Cartographic Engineering, Geodesy and Photogrammetry, Universitat Politècnica de València, 46005 València, Spain
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ISPRS Int. J. Geo-Inf. 2019, 8(9), 378; https://doi.org/10.3390/ijgi8090378
Received: 30 June 2019 / Revised: 19 August 2019 / Accepted: 26 August 2019 / Published: 29 August 2019
(This article belongs to the Special Issue Historical GIS and Digital Humanities)
The use of geographic data from early maps is a common approach to understanding urban geography as well as to study the evolution of cities over time. The specific goal of this paper is to provide a means for the integration of the first 1:500 urban map of the city of València (Spain) on a tile-based geospatial system. We developed a workflow consisting of three stages: the digitization of the original 421 map sheets, the transformation to the European Terrestrial Reference System of 1989 (ETRS89), and the conversion to a tile-based file format, where the second stage is clearly the most mathematically involved. The second stage actually consists of two steps, one transformation from the pixel reference system to the 1929 local reference system followed by a second transformation from the 1929 local to the ETRS89 system. The last stage comprises a map reprojection to adapt to tile-based geospatial standards. The paper describes a pilot study of one map sheet and results showed that the affine and bilinear transformations performed well in both transformations with average residuals under 6 and 3 cm respectively. The online viewer developed in this study shows that the derived tile-based map conforms to common standards and lines up well with other raster and vector datasets. View Full-Text
Keywords: coordinate transformation; Akaike information criterion; quality control; urban mapping; cartographic heritage; tile-based geospatial information systems coordinate transformation; Akaike information criterion; quality control; urban mapping; cartographic heritage; tile-based geospatial information systems
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Villar-Cano, M.; Jiménez-Martínez, M.J.; Marqués-Mateu, Á. A Practical Procedure to Integrate the First 1:500 Urban Map of Valencia into a Tile-Based Geospatial Information System. ISPRS Int. J. Geo-Inf. 2019, 8, 378.

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