地圖視覺化相關研究中，流型圖結合地圖及流程圖，以不同寬度、顏色的線段及箭號呈現兩地間量化資料的移動；比例符號圖透過在地圖位置上建立不同尺寸的圓形、圓餅圖或圖示來表示各地區量化資料的大小。大部分的地圖視覺化研究著重在靜態的方法上，然而靜態的視覺化只能提供單一且有限的資訊給使用者。本論文提出新的動態重要度視覺化方法，以地理學等高線的概念，在地圖邊界外圍建立不同大小的同心橢圓形重要度等高線，將資料圖示經最佳化計算重新排列到相對應的重要度等高線，以動畫和粒子流呈現資料重要度的變化過程，並結合使用者互動式介面來觀察不同面向的重要度改變過程。

In map visualization, flow maps combine map and flow charts, use flow charts with different size and color to show the quantitative data moving between two places on the map. Proportional symbol maps put different size of discs, pie charts or images to the corresponding location on the map for showing different quantitative data. However, most of the research focus on static methods, and static visualization can only provide limited information to the users. This paper proposed a novel dynamic importance visualization method. Use the concept of geographical contour line, we create several concentric ellipse called ”importance contour line” that surrounding the map border. And use optimization method to rearrange the representative logo to the corresponding ellipse. We show the importance change process through animation and use particle flow for representing the relationship between two data set. We provide user interface for showing different aspects of the importance change process.

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