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mixfft
fft混合基算法，c代码实现，可移植混合基的傅立叶变换算法(fft-based hybrid algorithm, c code, portable hybrid-based Fourier transform algorithm)
- 2008-07-27 12:35:37下载
- 积分：1
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1
说明： Fractal分形，简短的代码，清晰可用(Fractal)
- 2010-09-22 18:49:09下载
- 积分：1
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grey
灰色关联度分析是基于灰色系统的灰色过程, 进行因素间时间序列的比较来确定哪些是影响大的主导因素, 是一种动态过程的研究。(Grey Relational Analysis is based on gray gray process, the comparison of the time series between the factors to determine what affect the the big dominant factor, is a dynamic process.)
- 2012-08-25 00:27:37下载
- 积分：1
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seepage-computation
渗流计算，渗流浸润线的计算，溢出点高程的确定(seepage computation)
- 2013-05-07 14:01:12下载
- 积分：1
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abaqus to flac小程序
利用abaqus软件建模，然后将inp文件导入flac软件中。(ABAQUS software is used to model, and then the InP file is imported into the FLAC software.)
- 2021-02-06 18:29:56下载
- 积分：1
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QR-decomposition
QR分解法是目前求一般矩阵全部特征值的最有效并广泛应用的方法，一般矩阵先经过正交相似变化成为Hessenberg矩阵，然后再应用QR方法求特征值和特征向量。它是将矩阵分解成一个正规正交矩阵Q与上三角形矩阵R，所以称为QR分解法,(QR decomposition
)
- 2020-08-31 01:08:10下载
- 积分：1
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LS_SVMlab
LS_SVM 偏最小二乘结合支持向量机(The LS SVM partial least squares and Support Vector Machine)
- 2012-11-22 10:08:51下载
- 积分：1
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na7
Orthogonal Polynomials Approximation
数值分析，计算正交基多项式的系数
(Given a function f and a set of m >0 distinct points . You are supposed to write a function to approximate f by an orthogonal polynomial using the exact function values at the given m points with a weight assigned to each point . The total error must be no larger than a given tolerance.
Format of function
int OPA( double (*f)(double t), int m, double x[], double w[], double c[], double*eps )
where the function pointer double (*f)(double t) defines the function f int m is the number of points double x[] contains points double w[] contains the values of a weight function at the given points x[] double c[] contains the coefficients of the approximation polynomial double*eps is passed into the function as the tolerance for the error, and is supposed to be returned as the value of error. The function OPA is supposed to return the degree of the approximation polynomial.
Note: a constant Max_n is defined so that if the total error is still not small enough when n = Ma)
- 2011-11-27 11:47:21下载
- 积分：1
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spline
三次样条曲线拟合代码，先训练，后差值，计算非常准确(Three times spline curve fitting, the first training, and after, computation is very accurate)
- 2012-02-21 20:27:19下载
- 积分：1
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Gauss-Projection
一个通过高斯正反算公式计算高斯投影后投影平面的二维坐标，也可通过坐标反算大地经纬度。提供54系，西安80系，WGS-84系和CGCS2000系四种椭球参数。(A positive and negative Gaussian Formulas to calculate the two-dimensional coordinates of the Gauss projection projection plane can also be computed from coordinates latitude and longitude of the earth. 54 Department of the the Xi' an 80 series, WGS-84 system and CGCS2000 Department of four oval ball parameters.)
- 2020-12-10 16:09:19下载
- 积分：1
