Extracting information from large amounts of data by using tables of numbers is difficult. Often, such data can be presented more effectively with graphics. The reduction in the cost of memory has allowed more powerful display systems to provide for the simultaneous display of hundreds, thousands, and even millions of colors. Effective and efficient manipulation of the colors in the display system is necessary to manage the use of such a large number of colors. These extended color capabilities can also be used to enrich the understanding of presentations of complex data sets. Applications which previously might have required the user to mentally correlate several displays can now display the same information in a single image with a corresponding increase in user understanding and accuracy of interpretation.
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