任何名为e的变量都不存在。这就是为什么三个答案返回为1,最后一个返回为0。 使用MATLAB 中的Exist函数检查工作区中观察下的变量 让我们通过使用magic()函数创建一个随机矩阵并将其命名为our_variable来理解这个概念。我们将使用exist函数来检查our_variable是否存在于我们在 MATLAB 的工作区中。 our_variable =magic...
r=exist('s.field') %用exist可以判定 r = 0 >> help existEXIST Check if variables or functions are defined.EXIST('A') returns:0 if A does not exist1 if A is a variable in the workspace2 if A is an M-file on MATLAB's search path.It also returns 2 whenA is the fu...
exist用来判断变量或函数是否存在：exist Check if variables or functions are defined. exist('A') returns: 0 if A does not exist 1 if A is a variable in the workspace 2 if A is an M-file on MATLAB's search path. It also returns 2 when A is the full p...
In the third example, thevariable `a` does not exist in the workspace of the calling function, so exist returns 0. 中文回答: exist是MATLAB中的一个内置函数,它分别检查变量或文件是否存在于工作区或文件系统中。它需要一个或两个输入参数: 1.变量名或文件路径,要检查的变量的名称或要检查的文件的...
0—namedoes not exist or cannot be found for other reasons. For example, ifnameexists in a restricted folder to which MATLAB does not have access,existreturns 0. 1—nameis a variable in the workspace. 2—nameis a file with extension.m,.mlx, or.mlapp, ornameis the name of a file ...
If it does find one, it will load the variable. Here is a simple example to read all the MAT files in a given directory and load a variable named 'myVar' if it exists. 테마복사 myFiles = dir('*.mat'); for i=1:length(myFiles) clear myVar; load(myFiles(...
楼上说的有问题, The variable y does not exist意思是变量y不存在 还有,不能直接对函数文件运行,函数要放在主文件里调用才可以 是
Check existence of variable, script, function, folder, or class collapse all in pageSyntax exist name exist name searchType A = exist(___)Description exist name returns the type of name as a number. This list describes the type associated with each value: 0— name does not exist or canno...
Check if variable exists in workspace to plot... Learn more about gui, error, check variable, exist, workspace, errordlg, if statement MATLAB
0—namedoes not exist or cannot be found for other reasons. For example, ifnameexists in a restricted folder to which MATLAB does not have access,existreturns 0. 1—nameis a variable in the workspace. 2—nameis a file with extension.m,.mlx, or.mlapp, ornameis the name of a file ...