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代码为本人为写毕业论文，编写的几个合成地震记录的代码，包括cdp道集，共炮点道集以及一个简单的一层的地质模型对应的合成地震记录。(Man-made code-based write theses, prepared by several synthetic seismogram code, including cdp gathers a total of shot gathers, as well as a simple layer of the geological model of the corresponding synthetic seismogram.)

Clever B.Moler 博士的经典著作《Mumerical Computing with MATLAB》介绍的一个ode23简化版ode23tx算法思想及其程序代码。(Clever B.Moler Dr. classics " Mumerical Computing with MATLAB" describes a simplified version of ode23tx ode23 algorithm ideas and program code.)

第k小元素（分治法） 给定一个线性序列集，要求求出其中指定的第K小的数的值和位置.如给定n个元素和一个整数i，1≤i≤n，输出这n个元素中第i小元素的值及其位置；(First k small element (divide and conquer) Given a set of linear sequence, where the specified requirements determined the K value and the small number of locations, such as a given n elements and an integer i, 1 ≤ i ≤ n, output this is the n elements of the i-th element value and the position of the small )

实现均匀pcm编码的matlab函数，可以把波形转换为PCM编码(Matlab code for uniform pcm function can be converted to PCM encoded waveform)

用matlab实现的一个就彩色图像转换为灰度图像的程序，程序很简单(Using matlab to achieve a color image converted to grayscale on the image process, the program is very simple)

本代码包含了多个MATLAB经典程序，其中有：滤波器，线性变换，图像处理等(This code contains a number of MATLAB classical procedures, including: filters, linear transform, image processing, etc.)

convert RGB color space to XYZ color space

cuckoo optimization for bench mark problems

this file contain matlab code for fir filter design

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