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Published on April 23, 2020

CoronaVis: Visual Analysis of Coronavirus data

INF researchers create website with Covid-19 visual data analysis tools


Presenting data in a more illustrative and dynamic way is the goal of techniques for visual analysis. Researchers from the Instituto de Informática – UFRGS developed a website with several tools created for visual analysis of data related to COVID-19 in Brazil and the World. The web page https://www.ufrgs.br/coronavis describes several approaches for creating insights about COVID-19 data.

One example is an interactive dashboard that displays confirmed cases and deaths in Brazilian states and cities, distributed in absolute numbers and proportion to the population. Data are presented in tables and maps with a color scale to identify the different ranges of values. According to the project coordinator, professor João Luiz Comba, the visual technique heatmap allows more immediate identification of patterns and variations of data. It allows for more clear comparisons to be made. “In textual format, in a spreadsheet, for example, it takes a long time to draw conclusions that can be observed more quickly visually,” explains Comba.

Check out the Covid-19 Brazil dashboard: https://covid19.ufrgs.dev/dashboard/#/dashboard

The dashboard offers the possibility of exploring data in various ways. It is possible, for example, to determine a specific time, opting for a view in any range of days. “The dashboard allows us to interactively change the way that data is displayed, with an immediate response. This allows fast exploration of different scenarios, explains the project coordinator, who has the participation of other professors, master’s and undergraduate students of the Instituto de Informática. Some examples of other dashboards are also published on the website, such as a dashboard for South America, and a dashboard of ICU occupation rooms in Porto Alegre.

Also, other tools allow the comparison of the evolution of COVID-19 in more than 4200 regions in the world. In the figure below, they show a comparison of the evolution of the number of deaths in the states of Brazil, USA, and Sweden. Each row corresponds to a state that had at least 100 deaths. Sao Paulo and Stockholm have a similar evolution. To create your analysis from 4200 regions in the world use the tool at https://covid19.ufrgs.dev/tools/.