surface chart

In the process of well test, the manual methods, estimating method and interpolation by chart, are usually used to deal with surface data, which are tedious and have great errors.

油气井测试过程中，处理地面数据的常用方法是估计估算、查表插值的手工法，这种方法既繁琐且误差大。

Using Matlab programming to achieve the non uniform B spline curves and surfaces, the positive operator, inverse, derivative vector algorithm, to calculate the integral impeller blades, ruled surface data point and generates the effect chart.

在Matlab编写非均匀B样条曲线的正算、反算、导矢等算法，计算出整体叶轮、直纹面叶片、叶片等距面、叶片缝合面的数据点并生成效果图。

Based on the above, LAT in Bohai Rim area is established by surface fitting as the seamless chart datum model of this area.

并在此基础上对渤海湾海区最低天文潮面进行了拟合，建立了该区域的无缝深度基准面模型。