xyz2enu

the same with the privious one.

第16章 偏微分方程的数值解法.zip。是从书中光盘里直接拷贝的代码，放在这里，与大家共享，共同交流，希望对大家有帮助。(Chapter 16 Numerical Solution of Partial Differential Equations)

make big-endian data files for grads

matlab采用半色调技术对图像进行显示：用模板近似表示10个灰度级，每一个灰度级用3*3 的模板来表示，并对如下图所示的256*256的渐变图像进行半色调输出的检验。(matlab using halftoning image display: template approximated 10 gray levels, a gray level of each template used to represent the 3* 3, and the gradation of the image as shown in Figure 256* 256 halftone inspection of the output.)

说明：  隐马尔科夫的例子，很清晰，可以做诊断推理，可以用于模式识别，剩余寿命预测等！(hidden Markov model HMM uses to predict residual life and fault diagnosis.)

多元线性回归算法，能将多个线性的物质之间的变量和自变量之间建立相关度高的线性回归方程。(Multiple linear regression algorithm, can the variables and between multiple linear material to set up linear regression equation with high correlation between independent variables. )

matlab实现的点云精简算法，亲测可用，效果不错(cloud jingjian)

基于遗传算法与粒子群算法的相机标定程序，值得借鉴(The camera calibration program based on genetic algorithm and particle swarm optimization is worthy of reference)

used to mark pixel in images and then giving values in x-y co-ordinate

带通采样定理的验证以及在无线电全数字中频直扩接收机的应用 (Verify bandpass sampling theorem)