xsort

Defined in xtensor/xsort.hpp

template <class E>
auto xt::sort(const xexpression<E> &e, placeholders::xtuph)

template <class E>
auto xt::sort(const xexpression<E> &e, std::ptrdiff_t axis = -1)

Sort xexpression (optionally along axis) The sort is performed using the std::sort functions.

A copy of the xexpression is created and returned.

Return

sorted array (copy)

Parameters

• e: xexpression to sort
• axis: axis along which sort is performed

template <class E>
auto xt::argsort(const xexpression<E> &e, placeholders::xtuph)

template <class E>
auto xt::argsort(const xexpression<E> &e, std::ptrdiff_t axis = -1)

Argsort xexpression (optionally along axis) Performs an indirect sort along the given axis.

Returns an xarray of indices of the same shape as e that index data along the given axis in sorted order.

Return

argsorted index array

Parameters

• e: xexpression to argsort
• axis: axis along which argsort is performed

template <layout_type L = ::xt::layout_type::row_major, class E>
auto xt::argmin(const xexpression<E> &e)

template <layout_type L = ::xt::layout_type::row_major, class E>
auto xt::argmin(const xexpression<E> &e, std::size_t axis)

Find position of minimal value in xexpression.

Return

returns xarray with positions of minimal value

Parameters

• e: input xexpression
• axis: select axis (or none)

template <layout_type L = ::xt::layout_type::row_major, class E>
auto xt::argmax(const xexpression<E> &e)

template <layout_type L = ::xt::layout_type::row_major, class E>
auto xt::argmax(const xexpression<E> &e, std::size_t axis)

Find position of maximal value in xexpression.

Return

returns xarray with positions of maximal value

Parameters

• e: input xexpression
• axis: select axis (or none)

template <class E>
auto xt::unique(const xexpression<E> &e)

Find unique elements of a xexpression.

This returns a flattened xtensor with sorted, unique elements from the original expression.

Parameters

• e: input xexpression (will be flattened)