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functionz
说明:
在三次样条中,要寻找三次多项式,以逼近每对数据点间的曲线。在样条术语中,这些数据点称之为断点。因为,两点只能决定一条直线,而在两点间的曲线可用无限多的三次多项式近似。因此,为使结果具有唯一性。在三次样条中,增加了三次多项式的约束条件。通过限定每个三次多项式的一阶和二阶导数,使其在断点处相等,就可以较好地确定所有内部三次多项式。此外,近似多项式通过这些断点的斜率和曲率是连续的。然而,第一个和最后一个三次多项式在第一个和最后一个断点以外,没有伴随多项式。因此必须通过其它方法确定其余的约束。最常用的方法,也是函数spline所采用的方法,就是采用非扭结(not-a-knot)条件。这个条件强迫第一个和第二个三次多项式的三阶导数相等。对最后一个和倒数第二个三次多项式也做同样地处理。
(the Cubic Spline, to find three polynomial, approaching every right to point the data curve. The kind of terms, these data points called breakpoints. Because only two points a straight decisions, and in between the two curves can be used an infinite number of cubic polynomial approximation. Therefore, in order for the outcome of uniqueness. The Cubic Spline, add the cubic polynomial bound by the conditions. By limiting each cubic polynomial of the first order and second-order derivative, it breakpoint in the same Department, we can better identify all internal cubic polynomial. In addition, the polynomial approximation of these breakpoints slope and curvature is continuous. However, the last one and a cubic polynomial in a breakpoint and the final one, not accompanied by polynomials. There)
- 2006-03-15 21:19:29下载
- 积分:1
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12
说明: 一段用来做数值计算的代码,主要是做的数值模拟,用来模拟流线形态的代码()
- 2011-06-17 11:35:01下载
- 积分:1
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Isoclinal-interference
等倾干涉(由薄膜产生的干涉。薄膜可以是透明固体、液体或由两块玻璃所夹的气体薄层。入射光经薄膜上表面反射后得第一束光,折射光经薄膜下表面反射,又经上表面折射后得第二束光,这两束光在薄膜的同侧,由同一入射振动分出,是相干光,属分振幅干涉)(Isoclinal interference)
- 2011-10-02 16:43:33下载
- 积分:1
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WaveMatlab
说明: Matlab地震波显示程序
Matlab的矩阵数据类型与地震波数据类似
(Matlab seismic display program Matlab matrix data types and seismic wave data similar)
- 2008-10-17 09:39:59下载
- 积分:1
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code4
matlab gui设计学习手册 第二版 2012新版 第三章源码( matlab gui)
- 2012-06-23 13:09:10下载
- 积分:1
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11
说明: 这是一个matlab科学计算的初步实验。对初学matlab的人有一定的帮助(This is a preliminary experiment matlab scientific computing. Matlab for beginners who have some help)
- 2011-02-28 22:27:52下载
- 积分:1
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snogcca01
线性矩阵不等式求解程序,用于求解一组线性矩阵不等式。(LMI solving program for solving a linear matrix inequality.)
- 2006-07-15 17:10:32下载
- 积分:1
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Simulacao_P1
Simulation of basic circuit eletric
- 2014-12-24 10:31:29下载
- 积分:1
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fft_bpfilter
该函数使用matlab对运动情况下的心电信号做快速傅里叶变换,并加汉宁窗函数进行滤波(The function uses Matlab ECG movement fast Fourier transform, Hanning window function filtering)
- 2013-05-07 20:38:17下载
- 积分:1
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SubjectParser
Subject Parser extends Header Parser Source Code for Andriod.
- 2014-01-13 12:12:38下载
- 积分:1