Standardized precipitation index web application mapping shiny model

摘要

Increasing needs for Geographic Information System (GIS) to assist in the process of spatial data analysis and management can help in more effective in making decision process when faced with spatial data presentation. The use of open source based technology can help in the process of providing GIS more efficient. R Programming with basic functional language changes the writing structure of child element HTML tags on the Shiny framework. The development of an application system with the MVC model in the Shiny framework is done by dividing the components into different files ie ui.R and server.R. By dividing each lengthy process into each section reactively can set the web server to not execute the object input on the file server.R as a whole thus increasing the efficiency of the computing process on the web server. The division can be done by controlling the sequence of functions when the thread runs so that the web server does not execute the entire functionality.