Live version: http://openhydrology.org/maps/historic-water/
Historic Water is a map portal used to visualize spatial changes taking place in time. The application displays vector thematic layers, created by drawing hydrography of Krakow from historical maps from different years. An additional element is a layer showing the location of flood marks in the city and a time line that allows you to filter the displayed signs in relation to the dates of floods. The tool allows for quick analysis of changes in the state of a given event in time.
technologies: JavaScript, HTML5, CSS3, GeoJSON, PHP
framework: ReactJS + Redux
database: Geopackage (SQLite database container with support for spatial data)
vector layers: made in spatial desktop app QGIS 3.6
source for vector layers: https://dawnemapykrakowa.pl/
To run database server (server folder) you need Apache with SQLite support. Server functions returns vector objects in GeoJSON format in coordinate system OGC:1.3:CRS84 (4326).
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