Data visualization is the process of showing abstract or verbal information into graphical display for making sense and communication. It is a powerful tool to present and make people understand easily about any complex matter or idea; because core information lives inside data. The information related to sales, athletic performance, incidences of disease or anything else are abstract but still we can display them visually. To be succeeding in transforming abstract information into visual we need to understand cognition and visual perception. In addition, to display data efficiently, designers need to trail design principle that are resulting from understanding of human perception.
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Data visualization enables people to see things that they did not understand before. After visualization has been done, even if the amount of data is very high still patterns can be understood so quickly. It helps to convey message in a universal way which makes it easy to share thoughts with others. This visualization let’s all people see the same things and it can even help them to understand the changes if a possible adjustment is done.