To visualize data, an input data set having a plurality of data items is received, and data thinning processing is applied to identify data items of the input data set to deselect from visualizing in a visualization screen. Identifying the data items to deselect is based at least on density of the data...http://www.google.com.tw/patents/US7921363?utm_source=gb-gplus-share專利 US7921363 - Applying data thinning processing to a data set for visualization
