pfkeyv2

说明：  这是一个用函数画图的源代码程序，可以是二维的，也可以是三维的(This is a drawing of the source code with function procedures, can be two-dimensional, it can be three-dimensional)

通过MATLAB软件编程实现夫琅和费衍射的方法：用衍射积分(To achieve through the MATLAB software programming Fraunhofer diffraction method: using diffraction integral)

matlab中的画图程序，包括了坐标设置，最大范围设置，增加网格，网格间距，曲线颜色粗细，曲线类型。(Matlab drawing program, including the coordinate set, maximum range setting, increasing the grid, the grid spacing, color thick curve, curve type.)

to extarct features cephalogram lateral view for classification

this is helpful to get better result in stock market pridiction.

一种新的复正弦信号二维频率估计算法一种新的复正弦信号二维频率估计算法(A new two-dimensional complex sinusoid frequency estimation algorithmA new two-dimensional complex sinusoid frequency estimation algorithm)

为研究局部阴影效应对光伏发电系统的影响，首先建立了光伏阵列工程数学模型，分析局部阴影条件下光伏阵列的输出特性。为了便于工程分析，该文利用PVSYST软件分析比较单晶硅、多晶硅和薄膜电池等3种不同材料光伏电池在局部阴影条件卜的输出功率，为工程应用提供了良好的指导作用。最后提出了几种提高光伏阵列抗局部阴影能力的措施厂 (To investigate the effect of local shading effects on photovoltaic systems, photovoltaic array project was first established mathematical model to analyze the output characteristics under conditions of partial shading of the PV array. In order to facilitate engineering analysis, this paper use PVSYST software analysis and comparison monocrystalline, polycrystalline and thin film batteries, photovoltaic cells of three different materials in partial shade conditions Bu output power for engineering applications provide a good guide. Finally, several photovoltaic arrays to improve the ability to measure resistance to partial shade plant)

matlab编写的多元变量最小化问题的downhill方法求解(matlab prepared multi-variable minimization problem downhill method)

说明：  彩色图像的高斯金字塔，通过修改ReductionFactor参数来实现不同阶层的金字塔(Color image of the Gaussian pyramid, by modifying the ReductionFactor parameter to achieve different levels of the pyramid)

应用matlab进行图片去噪，简单的matlab程序。(The engineering image denoising is realized with matlab software system.)