1

自定义函数画图软件，软件的函数输入部分分为4部分，针对的是4个分段函数，当然也可以扩展为5段，六段，如果你的函数不用分段，那就只用在第一个edit里面写下你的函数表达式即可，同时要在后面写出x的范围，和cftool里面的custom equation一样，只能用matlab语法规范的函数表达式，即你不要写2x而是2*x，不要把我们的数学表达式和matlab表达式搞混淆了。从gif可以看出，在第一个edit输入不同的函数，有多项式函数，指数函数，三角函数，对数函数，axes都能有正确的图形，另外用其他edit配合，画出分段函数图像。因此，这可软件无论你是单个函数还是分段函数（4段以内）均可正确画出，当然还配合有grid选项，如果想保持画出的图形，无需QQ截屏，直接点保存键，将它以jpg的格式，存入到你想要存的文件夹里面。要想查对应点的函数值时，只用在edit里面输入x值，按回车就可以得到，注意x值是在范围之内的，支持结果累积，最终将以一个表格的形式显示出来，如果要想画新的图形，点击清空按键即可。(Drawing software-defined functions, the software function of the input part is divided into 4 parts, for the four sub-functions, of course, can also be extended to 5, Liu Duan, if you do not have sub-function, then only the first an edit which you can write your function expression, while the range in the back to write x, and cftool inside the custom equation, can only function with matlab syntax specification expression, but that you do not write 2x 2* x, not to our matlab mathematical expressions and expressions confused. It can be seen from the gif, in the first edit enter a different function, there polynomial functions, exponential functions, trigonometric functions, logarithmic functions, axes can have the right graphics, the other with the use of other edit, draw piecewise function image. Therefore, it can be software or whether you are single function piecewise functions (4 or less) can be correctly drawn, of course, with a grid option, if you want to keep drawing the graphics,)

用matlab计算零点，可以通过和fortran联合调试才能正常运行！！ (calculated using Matlab 0.1, and through joint debugging fortran normal operations can! !)

Like Matlab s scatter command, lscatter produces a scatter plot. Unlike scatter, it allows you to also use a vector of labels that are used instead of the usual uniform markers. lscatter(x,y,l) generates a scatter plot where label{i} is placed at the coordinate (x(i),y(i)), for all i. The program accommodates a large number of options which make it easy to taylor the output to your needs. The included example script should help you get started. Please comment if you like it or find it useful.

水文分析中干旱指标spi的计算代码，可计算多时间尺度的指标，黏贴成m文件即可，文件内有注释描述。(Spi hydrological drought index analysis of the calculation code, and calculate multi-time scale of the index, you can paste into the m file, file comments within the description.)

关于支持向量机的MATLABB程序，用于模式识别可直接使用。 (MATLABB program on support vector machine for pattern recognition can be used directly.)

rf matlab tool box 1

AOK自适应时频分布算法， 是基于自适应最优核的时频分析软件，该软件包括自适应时频分析的计算内核及Matlab 交互脚本。计算内核是基于C 编译的，并针对Intel P4、AMD 作了不同优化；(based on Adaptive optimal kernel time-frequency analysis software based on Adaptive optimal kernel time-frequency analysis software)

说明：  电压对有功灵敏度计算公式，原理为以潮流计算方程为基础，对潮流方程进行线性化，并且交换顺序(The calculation formula of the voltage to the active sensitivity is based on the power flow calculation equation, the power flow equation is linearized, and the exchange sequence)

遗传算法用于函数拟合与模式识别的Matlab示例程序 (Genetic algorithm for function fitting and pattern recognition procedures Matlab Example)

层次分析法（Analytic Hierarchy Process，简称AHP）是将与决策总是有关的元素分解成目标、准则、方案等层次，在此基础之上进行定性和定量分析的决策方法。(AHP (Analytic Hierarchy Process, the AHP for short) is the elements related to the decision is always broken down into objectives, principles, scheme, such as level, on the basis of the decision-making methods of qualitative and quantitative analysis. )