# dollar

($) last index

## Description

The `$` symbol denotes the last index (row or column) of the array. It is therefore equal to the number of rows or columns.

The `$` symbol is also used to LaTeX texts, which must start and end by `$`. See also math_rendering_features_in_graphic.

## Examples

    a=[1,2,3;4,5,6];
    a($)

    b = [1 2 3;4 5 6;7 8 9];
    // Access the last element of first row, i.e. 3
    b(1,$)
    // Access the last element of second column, i.e. 8
    b($,2)
    //Access the last element of b, i.e. 9
    b($,$)

    // Add a row at the end of the matrix b
    b($+1,:) = [1 1 1]

    // The $ symbol as a LaTeX delimiter
    titlepage(['$\Huge\textrm{It is }\LaTeX:$';'$\Huge 2^2+1=\sqrt{25}$'])

## See Also

- math_rendering_features_in_graphic
- size
- length