Slices¶

namespace ndarray

namespace slices¶

Functions

ndarray::Slices filledSlices(const ndarray::Shape &in_shape, const ndarray::Slices &slices)¶

return proper format 2D slices vector

Example:

in_shape{3,4,2}, slices{{0,2}, {1,-1,2}} => out_slices{{0,2,1},{1,3,2},{0,2,1}}

in_shape{3,4,2}, slices{{0,none}, {none,-1,2}, {none,none,-1}} => out_slices{{0,4,1},{0,3,2},{1,-1,-1}}

Return

2D slices vector with proper value and size must be equal in_shape size.

Parameters

in_shape: actual shape of the Slices ndarray.
slices: 2D vector with slices value. all inner vector must be size less than or equal one.

ndarray::Shape getSliceOutShape(const ndarray::Slices &slices)¶

return primary output shape of filtered slices

Example: slices{{0,2,1},{1,3,2},{0,2,1}} => out_shape{2,1,2}

Return

shape of the output ndarray.

Parameters

ndarray::LL getSliceStartIndex(const ndarray::Slices &slices, const ndarray::Stride &stride)¶

return slices base index. from where index will be start.

Example: slices{{2,5,1},{0,3,2}} , stride{6,1} => out = 6*2+0*1 = 12

Return

start index where from slices will be start.

Parameters