codes

说明：  Matlab编写的最速下降法算法程序，美国一本权威数值计算方面的书上的源程序。(Matlab prepared by the steepest descent algorithm, a numerical calculation authoritative book on the source.)

实现了测井数据的fft变化分析，可以用于查看测井数据的频谱特征(Realize the logging of data changes fft analysis, can be used to view the logging data of spectrum characteristics of)

截断奇异值分解技术是一种正则化方法，用于不适定问题的数值计算(Truncated Singular Value Decomposition is a regularizaiton method for ill-conditioned problem computation.)

圆柱绕流的数值模拟（基于有限体积法），Fortran程序(Numerical simulation of flow around a cylinder (based on the finite volume method), Fortran program)

八点法计算camera matrix，八点法计算camera matrix，八点法计算camera matrix，八点法计算camera matrix，八点法计算camera matrix(Eight law camera matrix, eight law camera matrix, eight law camera matrix, eight law camera matrix, eight law camera matrix)

用于解决投入产出问题的RAS算法，已知矩阵的行和和列和，可以求出矩阵的具体值。(For the RAS algorithm to solve the problem of input and output. We know the rows and columns of the matrix,then the specific value of the matrix can be calculated.)

基于全相位谱分析的相位差频谱校正法，结合了全相位FFT与传统FFT谱分析法。(Phase Difference Correcting Spectrum Method)

根据给定的等距结点上的函数值与一阶导数值, 用埃尔米特等距插值公式计算指定插值点处的函数值。(According to the given equidistant nodes function value with a first derivative values, with equidistant interpolation Hermite interpolation formula specified function value at the point.)

用C++编写的一维和二维快速傅里叶变换程序(Prepared with C++ one-dimensional and two-dimensional fast Fourier transform procedure)

用matlab来模拟温度场，准确度高，具有参考价值。(yong matlab lai moni wenduchang ,zhuquedugao ,juou cankaojiazhi .)