Dimensions

Dimensions(expr)

returns a list of the dimensions of the expression expr.

Examples

A vector of length 3:

>> Dimensions({a, b, c})
{3}

A 3x2 matrix:

>> Dimensions({{a, b}, {c, d}, {e, f}})
{3, 2}

Ragged arrays are not taken into account:

>> Dimensions({{a, b}, {b, c}, {c, d, e}})
{3}

The expression can have any head:

>> Dimensions[f[f[a, b, c]]]
{1, 3}

>> Dimensions({})
{0}

>> Dimensions({{}})
{1, 0}

Implementation status

• ✅ - full supported

Github

• Implementation of Dimensions