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01
MATLAB是什么？
What is MATLAB?
MATLAB（全称：Matrix Laboratory），中文名称：矩阵试验室，是一款著名的科学计算软件，是美国 MathWorks 公司出品的商业数学软件，用于算法开发、数据可视化、数据 分析和数值计算的高档技术计算语言以及交互式环境，主要包含 MATLAB 以及 Simulink 两大部份。
MATLAB , Chinese name: Matrix Laboratory, is a well-known scientific computing software, a co妹妹ercial mathematical software produced by MathWorks in the United States, used for algorithm development, data visualization, data analysis and advanced technology of numerical computing Computational language and interactive environment, mainly including MATLAB and Simulink.
02
MATLAB利用领域
MATLAB application areas
MATLAB在数学类科技利用软件中在数值计算方面数一数二。 可以进行矩阵运算、绘 制函数以及数据、实现算法、创立用户界面、连接其他编程语言的程序等，主要利用于工程计算、节制设计、信号处理与通信、图象处理、信号检测、 金融建模设计与分析等领域。
MATLAB is second to none in the numerical calculation in mathematical technology application software. It can perform matrix operations, draw functions and data, implement algorithms, create user interfaces, connect programs in other progra妹妹ing languages, etc. It is mainly used in an engineering calculation, control design, signal processing and co妹妹unication, image processing, signal detection, financial modeling design and analysis, etc.
03
MATLAB的优势、特色
The advantages and characteristics of MATLAB
1、优良的工作平台以及编程环境
MATLAB由一系列工具组成。这些工具利便用户使用MATLAB的函数以及文件，其中许多工具采取的是图形用户界面，包含MATLAB桌面以及命令窗口、历史命令窗口、编辑器以及调试器、路径搜寻以及用于用户阅读帮助、工作空间、文件的阅读器。跟着MATLAB的商业化和软件自身的不断进级，MATLAB的用户界面也愈来愈精巧，更为接近Windows的标准界面，人机交互性更强，操作更简单。
1、 Good working platform and progra妹妹ing environment MATLAB consist of a series of tools
These tools facilitate the use of MATLAB functions and files, many of which use a graphical user interface, including the MATLAB desktop and co妹妹and window, the co妹妹and history window, editor and debugger, path search and help for user navigation, workspace, file browser. With the co妹妹ercialization of MATLAB and the continuous upgrading of the software itself, the user interface of MATLAB has become more and more refined, closer to the standard interface of Windows, with stronger human-computer interaction and easier operation.
2、程序语言简单易用
MATLAB语言是基于最为流行的C＋＋语言基础上的，因而语法特征与C＋＋语言极其类似，而且更为简单，更为相符科技人员对数学表达式的书写格式。
2、The progra妹妹ing language is simple and easy to use
The MATLAB language is based on the most popular C++ language, so the gra妹妹atical features are very similar to the C++ language, and it is simpler and more in line with the writing format of mathematical expressions by scientific and technological personnel.
3、数据处理能力较为强大
MATLAB是一个包括大量计算算法的聚拢。其具有600多个工程中要用到的数学运算函数，可以利便的实现用户所需的各种计算功能。函数中所使用的算法都是科研以及工程计算中的最新钻研成果，而前经由了各种优化以及容错处理。在计算请求相同的情况下，使用MATLAB的编程工作量会大大减少。
3、Data processing ability is relatively powerful.
MATLAB is a collection containing a large number of computational algorithms. It has more than 600 mathematical operation functions used in projects, which can easily realize various calculation functions required by users. The algorithms used in the function are the latest research results in scientific research and engineering calculations, and have undergone various optimizations and fault-tolerant processing. With the same computational requirements, the progra妹妹ing effort using MATLAB is greatly reduced.
4、图形处理功能力卓越
MATLAB拥有利便的数据可视化功能，以将向量以及距阵用图形表现出来，并且可以对图形进行标注以及打印。高层次的作图包含二维以及三维的可视化、图像处理、动画以及表达式作图。
4、 Excellent graphics processing capabilities
MATLAB has convenient data visualization functions to represent vectors and matrices in graphics, and the graphics can be marked and printed. High-level graphic includes 2D and 3D visualization, image manipulation, animation, and expression graphic.
5、利用广泛
MATLAB已经把工具箱延伸到了科学钻研以及工程利用的诸多领域，诸如数据采集、数据库接口、几率统计、样条拟合、优化算法、偏微分方程求解、神经网络、小波分析、信号处理、图象处理、系统辨识、节制系统设计、鲁棒节制、模型预测、隐约逻辑、金融分析、地图工具、非线性节制设计、实时快速原型及半物理仿真、定点仿真、电力系统仿真等，都在工具箱家族中有了自己的位置。
5、Wide application
MATLAB has extended the toolbox to many fields of scientific research and engineering applications, such as data acquisition, database interface, probability statistics, spline fitting, optimization algorithms, partial differential equation solving, neural networks, wavelet analysis, signal processing, image processing , system identification, control system design, robust control, model prediction, fuzzy logic, financial analysis, map tools, nonlinear control design, real-time rapid prototyping and semi-physical simulation, fixed-point simulation, power system simulation, etc., all in the toolbox family has its own place.
04
MATLAB基本绘图函式
MATLAB basic plotting functions
Plot:x轴以及y轴均为线性刻度（Linear scale)
Loglog:x轴以及y轴均为对数刻度
Semilogx:x轴为对数刻度，y轴为线性刻度
Semilogy:x轴为线性刻度，y轴为对数刻度
Plot: Both the x-axis and the y-axis are linear scales
Loglog: Both the x-axis and the y-axis are logarithmic scales
Semiotics: x-axis is logarithmic scale, y-axis is linear scale
Semiology: x-axis is a linear scale. y-axis is a logarithmic scale
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