On the Way to Create Individualized Cartographic Images for Online Maps Using Free and Open Source Tools

Abstract

The goal of the research was to create online maps with dynamically changing cartographic images according to the users’ map reading skills, by only using open source tools and resources. The maps were designed for three map reader groups (beginners, intermediates and experts). We used OpenStreetMap and Shuttle Radar Topography Mission (SRTM) data to create the maps in QGIS . To display the maps online, we used QGIS Server on the server side, and OpenLayers on the client side. Based on earlier studies on map reading skills and cognitive load, the map design and generalization aimed to maximize the map reading efficiency of the target group. In the grouping process, an online test was used to measure the map reading competences of the map readers, such as the interpretation of hypsography, orientation skills, distance and travel time estimation, interpretation of map symbols, interpretation of geographic names and interpretation of topographic objects. The design and generalization of the map features were based on the map data categories (such as hypsography, coverage, roads, etc.) and they are different on the three maps.