Avaliação de simbologia cartográfica na variação da escala em áreas preditas de risco a desmoronamento aplicada em servidor de mapas

Abstract

With growing urbanization and human activities on land use, water and slope have been numerous records of natural disasters in the country. In 2010 and 2011 the country suffered from landslides, both in urban and in rural areas, where the roads have become impassable due to blockages in addition to several families who had to start over once they lost their goods and/or family as a result of these landslides. The present study investigated the best way to represent landslides on a map server, so that help manager municipal and/or state, interacting with residents as possible to the areas of soil erosion or disasters that may occur. With the integration of HTML, JavaScript/jQuery and PHP with the Google Maps API and Database Postgres/PostGIS sought to verify the possibility of implementing server maps WEB. In order to provide interactivity between users and the server was implemented tools for visualization of information and navigation on the server. Usability testing was conducted with the class of computing the 4th semester forest engineer, where the students had to perform three tasks on the server and an observer measure time and note the difficulties encountered by users. Research on the symbology at different scales occurred through a questionnaire that had personal issues related to applications of digital maps and symbology at different scales. We have implemented some page as: User Registration Form, Manipulation feature Form Point, Line and Polygon. With the completion of usability testing was identified need to adjust some textual elements of the page, since the difficulties of the users by not identifying occurred callouts. Also noted was the need to increase the number of characters in the user field to allow all possess a unique user. Users who answered the questionnaires indicated that the area of natural disasters along the map applications is a promising market. Respondents chose to scale large flag icon to medium scale point icon and small scales icon symbol of collapse.