The formula for area of triangle on ellipsoid by means of geodesic coordinate is derived in this paper.
推导出用三顶点的测地坐标计算地球椭球面上三角形面积的公式。
Connecting every spot to form a triangle, and calculated trend coordinate and deposition value of the spots, finally calculated atmospheric dust deposition.
连结这些点成三角形，求算这些点的趋势坐标及降尘值，最后计算大气降尘量。
Second under the principle of mapping color stimulus spectrum to rgb color space every clustering is visualized by the chromaticity diagram of j. c. maxwell's triangle plane coordinate.
然后，采用彩色刺激光谱投影到rgb颜色空间的原理，通过色度学中麦克斯韦的三角平面坐标色度图对各聚类结果进行可视化显示。
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