Abstract
The integration of user-generated content made in a collaborative environment is being increasingly considered a valuable input to reference maps, even from official map agencies such as USGS and Ordnance Survey. In Brazil, decades of lack of investment has resulted in a topographic map coverage that is both outdated and unequally distributed throughout the territory. This paper aims to analyze the spatial distribution of updates of OpenStreetMap in rural and urban areas in the country to understand the patterns of user updates and its correlation with other economic and developmental variables. This analysis will contribute to generating the knowledge needed in order to consider the use of this data as part of a reference layer of the National Spatial Database Infrastructure as well to design strategies to encourage user action in specific areas.
Highlights
Web technologies enable subjects without education in map design/production to become potential cartographers or “produsers” [1,2,3,4,5,6,7,8,9]
This paper describes initial efforts into investigating a way to assess the reliability of Volunteered Geographic Information (VGI) content in Brazil—or other developing countries
The purpose of this research is to analyse the spatial distribution of updates of OpenStreetMap through rural and urban areas in Brazil to understand the patterns of user updates and its correlation with other economic and development variables
Summary
Web technologies enable subjects without education in map design/production to become potential cartographers or “produsers” [1,2,3,4,5,6,7,8,9]. The second is the interest of official mapping agencies in updating their geodatabases with this rich crowd-sourced content [9,10,11,12,13,14,15,16,17]. It is this second factor which is our research motivation. In this case, the concerns in adopting VGI content for official purposes are related to the lack of methods that allow us to measure the reliability of this kind of data [18,19]
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