AI代码解释 clc;clear all;close all;n=randn(1,256);z=1.5*sin(1:256);s=n+z;[ca1,cd1]=dwt(s,'haar');%%等同于db1subplot(311);plot(s,'b-');title('原始信号');xlabel('x');ylabel('y');subplot(323);plot(ca1,'b-');title('haar低频系数1');xlabel('x');ylabel('y');subplo...
The code for Surface is surf(), surf(X,Y,Z) creates a three-dimensional surface plot, which is a three-dimensional surface that has solid edge colors and solid face colors. The function plots the values in matrix Z as heights above a grid in the x-y plane defined by X and Y. The...
Matlab中预设了数十种不同的colormap颜色图,如图:A colormap is a matrix of values that define the colors for graphics objects such as surface, image, and patch objects. MATLAB draws the objects by mapping data values to colors in the colormap. Dozens of different colormap color maps are prese...
I have a matrix Tot_Magnet (100,100,3) and when I plot it as image then I get black image, because the RGB vales are very small. That's why I want to plot it with a scaled values: Bx=Tot_Magnet (:,:,1); By=Tot_Magnet (:,:,2); ...
实例一:多子图、命令plot、图形标识(图名和横纵坐标)演示 多子图:subplot (m,n,k)一个窗口划分成m*n个小块,每个小块存放一个子图,k是子图的编号。 编号规则是: 从左到右边,从上到下依次编号。 %% 定义函数 t = (0:pi/50:2*pi)'; % 列向量 101*1 ...
Plot (X1, Y1,..., Xn, Yn) plots multiple pairs of x and y coordinates on the same set of axes. This syntax is an alternative to specifying the coordinates as a matrix. 使用plot函数绘图时,先要取得x、 y坐标,然后再绘制曲线,x往往采取等间隔采样。在实际应用中,函数随着自变量的变化趋势未知...
首先先画出图形,再画出需要在横坐标标出的点的位置,最后将这些点改成其他任意数字或字母,位置保持不变。代码如下:(其中%部分为把其中一点标记出来)(也可将代码修改为三维图 )x=1:0.1:125;a=1:0.1:200;y=x.^(1/2);z=a.^(11/20);plot(a,z,'r-','LineWidth',1);hold on ...
首先,你需要在MATLAB的SQL Window窗口中查询需要导出的数据。接着,在查询结果集上,即整个结果集的右侧空白区域右键点击,选择【Copy to Excel】,随后选择【Copy as xls/xlsx】,这将数据导出到97-2003格式的.xls文件或2007之后的.xlsx文件。如果你并不需要导出所有查询结果,可以事先在左侧选中需要导 ...
matlab，其名称是由MATrix和 LABoratory（矩阵实验室）两个单词的前三个字母所合成。在1978年，Malab就面世了。这个程序获得了很大的成功，受到了学生的广泛欢迎。在以后的几年里，Matlab在多所大学里作为教学辅助软件使用，并作为面向大众的免费软件广为流传。方法/步骤 1 第一步小伙伴们打开自己电脑桌面上找到matlab...
or a matrix of equal size. If the input is a matrix, polarplot plots the columns of rho against the columns of theta. It is also possible to have one input as a vector and the other as a matrix, but the length of the vector must be equal to one of the dimensions of the matrix...