在MATLAB中,可以使用find()函数来查找小数。find()函数用于查找数组中满足特定条件的元素的索引。 要在MATLAB中使用find()函数查找小数,可以按照以下步骤进行操作: 1. 创...
matlab gpu清除内存 本篇汇总了Matlab中常用的命令,包括:会话管理,系统命令,输入输出,矩阵运算,绘图等,并在后面附上实例说明。 ---常用命令语句--- 管理会话的命令 1.clear :清除内存变量和函数,把WorkSpace的变量清空; 2.clc :清除当前Matlab命令窗口的内容,注意clc不清楚变量。一般在编写m文件的时候,不是函数...
g = zeros(sizes.nVar,1); HESSIAN = []; switch funfcn{1} case 'fun' try initVals.f = feval(funfcn{3},X,varargin{:}); catch userFcn_ME optim_ME = MException('optimlib:fmincon:ObjectiveError', ... getString(message('optimlib:fmincon:ObjectiveError'))); userFcn_ME = addCause(...
Example 3: Creating a 3D Array % Creating a 1x2x3 3D matrix of zerosZeroMatrix=zeros(1,2,3);ZeroMatrix To highlight the ability of thezeros()function to handle multiple scalar inputs, we create a 3D matrix of size 1x2x3. The lineZeroMatrix = zeros(1, 2, 3)results in a three...
除直接定义外,可以通过函数生成特定的矩阵,比如eye(n)生成N阶单位阵,zeros(n)生成N阶每个元素均为0的方阵,magic(n)生成N阶幻方阵等。常见的用于生成矩阵的函数列表如表1.4所示。 表1.4 生成矩阵的函数 3.获得矩阵大小和维度 size函数可以获得指定数组某一维的大小,可以用来查看图像的高度和宽度以及动态图像的帧数...
bandw=zeros(1,numel(R));forgIdx=1:numel(R)I1=find(rcs(gIdx,:),1,'first');I2=find(rcs(gIdx,:),1,'last');bandw(gIdx)=(I2-I1+1)*dopres;end 运用二次拟合并绘制结果。 pf=polyfit(R,bandw,2);figureplot(bandw/1e3,R/1e3)holdonplot(polyval(pf,R)/1e3,R/1e3);holdoffxlab...
k = find(X) 1. k = 5×1 1 5 7 8 9 1. 2. 3. 4. 5. 6. 7. Use the logical not operator on X to locate the zeros. k2 = find(~X) 1. k2 = 4×1 2 3 4 6 1. 2. 3. 4.
(zeros(1,ihor),'-') title('Response of Oil Price to Expectations Shock') xlim([1 ihor]) set(gca,'XTick',0:4:ihor) end % Clear screen and print elapsed time clc; toc; % Print some directions to the user disp('Please find the means and variances of the VAR parameters in the ...
I am trying to find zero-crossings of a function in Matlab and plot the points where zero-crossing occurs. However, i am not able to find an easy way. I tried and Matlab fnzeros, but i can't understand the spmak and x,y used in these function. The function for which i want to ...
2.3.1、zeros(m,n) |-产生m×n的全0矩阵,只有一个参数时,产生方阵 2.3.2、ones(m,n) |-产生m×n的全1矩阵,只有一个参数时,产生方阵 2.3.3、rand(m,n) |-产生均匀分布的随机矩阵,元素取值范围为0.0-1.0,只有一个参数时,产生方阵 2.3.4、randn(m,n) ...