Syntax

Arguments and performed function

S = size(X);

S is a $2\times 1$ matrix of integers. The first entry of S is the number of rows of X and the second entry is the number of columns of X.

• X must be a matrix or dataset

p = rows(X);

p is a $1\times 1$ matrix equal to the number of rows of X.

• X must be a matrix or dataset

p = cols(X);

p is a $1\times 1$ matrix equal to the number of columns of X.

• X must be a matrix or dataset

W = kron(X, Y);

W is a matrix obtained as the Kronecker product of X, and Y.

• X must be a matrix or dataset
• Y must be a matrix or dataset

W = repmat(X, M, N);

W is a matrix obtained by replicating X, M times along the row dimension and N times along the column dimension.

• X must be a matrix or dataset
• M must be a positive integer
• N must be a positive integer

W = reshape(X, M, N);

W isan M$\times$N matrix constructed by reading the entries of X, in a column-major order.

• X must be a matrix or dataset
• M must be a positive integer
• N must be a positive integer
• If the number of entries of X is not M$\cdot$N an error is produced

W = dropmissing(X);

W is a matrix constructed by reading the entries of X, row by row, but skipping any rows in X that contain at least one missing value. An error is produced if an empty matrix results from dropping the rows of X with missing values.

• X must be a matrix or dataset

When the argument provided to dropmissing() is a dataset, then the function returns a dataset. Therefore, this function is also documented in Section B.13.

see also dropif and keepif