integer scalar, a vector of positive integer scalars, or an empty array of size 0-by-0, 0-by-1, or 1-by-0. If an element ofdimis larger thanndims(A), thensizereturns1in the corresponding element of the output. Ifdimis an empty array, thensizereturns a 1-by-0 empty array. ...
size(A) ans = 0 5 length(A) ans = 0 Empty arrays follow array concatenation behavior. For example, create an empty array ofdoubleand concatenate it to create a second array. A = double.empty(0,5); B = [A A] B = 0×10 empty double matrix ...
Create an array of size 1-by-3. Determine whether it is a matrix. Get Copy Code Block A1 = zeros(1,3); TF = ismatrix(A1) TF =logical1 Create an empty array of size 0-by-3. Determine whether it is a matrix. A 2-D empty array is a matrix. ...
dimis a positive integer scalar, a row vector of nonnegative integer scalars whendimis a vector of positive integers, or a 1-by-0 empty array whendimis an empty array. If an element of the specified dimension argument is larger thanndims(A), thensizereturns1in the corresponding element of...
dimis a positive integer scalar, a row vector of nonnegative integer scalars whendimis a vector of positive integers, or a 1-by-0 empty array whendimis an empty array. If an element of the specified dimension argument is larger thanndims(A), thensizereturns1in the corresponding element of...
If the size of any dimension is 0, then X is an empty array. If the size of any dimension is negative, then it is treated as 0. Beyond the second dimension, zeros ignores trailing dimensions with a size of 1. For example, zeros(3,1,1,1) produces a 3-by-1 vector of zeros. Da...
scoms=instrfind;%读取所有存在的端口if~isempty(scoms)stopasync(scoms);fclose(scoms);delete(scoms);%停止并且删除串口对象 end vall=get(handles.ppPort,'Value');switchvallcase1port='com1';case2port='com2';case3port='com3';case4port='com4';case5port='com5';end ...
isempty():数组是否为空 isscalar():是否是单元素的标量数组 isvector():是否为行或列向量 issparse():是否为稀疏矩阵 4.3.2、数组大小: length() %一维数组的长度,二维时返回维数最大的那个值 d=size() %将数组的维数以行向量的形式赋值给d=[m,n] [a,b]=size() %行、列方向的维数分别赋值给a,b ...
(0,3) %空的0*3数组 %% 字符型的比较 c='' %空字符向量 s="" %1*1字符串 size(c) size(s) isempty(c) isempty(s) c='freexyn' %字符向量(数组) s="freexyn" %1*1字符串 size(c) size(s) %% 字符型的连接 ['123','ab'] %字符向量连接,结果为更大的字符向量 ["123","ab"] ...
Size of each dimension, specified as two or more integer values, defines X as a sz1-by...-by-szN array. If the size of any dimension is 0, then X is an empty array. If the size of any dimension is negative, then it is treated as 0. If any trailing dimensions greater than 2 ...