REMOVE Function

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Language Reference

REMOVE Function

discards elements from a matrix

REMOVE( matrix, indices)

The inputs to the REMOVE function are as follows:

matrix: is a numeric or character matrix or literal.
indices: refers to a matrix containing the indices of elements that are removed from matrix.

The REMOVE function returns as a row vector elements of the first argument, with elements corresponding to the indices in the second argument discarded and the gaps removed. The first argument is indexed in row-major order, as in subscripting, and the indices must be in the range 1 to the number of elements in the first argument. Non-integer indices are truncated to their integer part. You can repeat the indices, and you can give them in any order. If all elements are removed, the result is a null matrix (zero rows and zero columns).

Thus, the statement

   a=remove({ 5 6, 7 8} , 3);

removes the third element, producing the result shown:

                  A
                  5    6   8

The statement

   a=remove({ 5 6 7 8} , { 3 2 3 1} );

causes all but the fourth element to be removed, giving the result shown:

                         A
                         8

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