Create an array of NaN values that is the same size as an existing array. Get A = [1 4; 2 5; 3 6]; sz = size(A); X = NaN(sz) X = 3×2 NaN NaN NaN NaN NaN NaN It is a common pattern to combine the previous two lines of code into a single line. Get X = Na...
Create a vector and compute its product, excludingNaNvalues. If you do not specify'omitnan', thenprod(A)returnsNaN. A = [1 3 2 4 NaN 3 NaN 2]; P = prod(A,'omitnan') P = 144 Input array, specified as a vector, matrix, or multidimensional array. Data Types:double|single|int8|...
Create an array of complex numbers. Determine whether the complex numbers contain finite values. Get A = [2+1i 3+1i/0 0/0-2i] A = 1×3 complex 2.0000 + 1.0000i 3.0000 + Infi NaN - 2.0000i Get TF = isfinite(A) TF = 1x3 logical array 1 0 0 The second element of A ...
在这种情况下,月份值M是标量。 %CreatesamplenumericarraysofyearvaluesYanddayvaluesD.Inthiscase, themonthvalueMisa scalar. Y=[2014;2013;2012]; M=01; D=[31;30;31];%Createthe datetime array. t=datetime(Y,M,D)%Specify a custom display formatforthe output,usingthe Format name-valuepair argume...
(Problem 11)Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the examples below. Examples: Input n = 3 Output a = [ 1 2 3 6 5 4 7 8 9 ] ...
displayDisplay text or array (overloaded method) tic, tocStart stopwatch timer(Read elapsed time from stopwatch) 上面所有函数都可以用“help funcName”或“doc funcName”命令查看帮助,参考Matlab R2012a帮助文档“MATLAB/Functions”。 当前文件夹(Current Folder)和搜索路径(Search Path): ...
I have a 2D array of size 672*8 in which I have several rows where in first and second column I have a value and in the other there is a nan value. There are also other rows which have values in all the columns. I want to create two new arrays so that first array only contains...
repmat是将矩阵按要求扩增。repmat([1:N]',[1,2]))：就是将[1:N]'看成一个整体，就相当于一个元素，将这个大的“元素”扩增为1x2的矩阵，如果p是整数，则就是将1x2矩阵p倍输出，即三维扩增。以下是Matlab的help结果：REPMAT Replicate and tile an array.B = repmat(A,M,N)creates a ...
Matlab抛出的异常说明str2num函数使用错误,参数必须是字符数组(char array)或者是字符串(string)。在后台看了下获得的listbox里面的数据如下: list_string = ' 56 30 3.09 0' ' 32 46 3.83 30' ' 19 48 3.91 76' ……(省略一大堆数据) ' 31 301 9.79 6634' ...
% [...] create v ind = ... find(isnan(v)); v( ind ) = 0; Vector indexing: 0.44s. % [...] create v mask = isnan(v); v( mask ) = 0; Boolean indexing: 0.33s. Iterating through the array v and checking each element individually means disregarding the "MAT" in MATLAB. ...