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Description
Need to implement following functions as described here Array manipulation routines
Basic operations
- copyto(dst, src[, casting, where]) Copies values from one array to another, broadcasting as necessary.
- shape(a) Return the shape of an array.
Changing array shape
- reshape(a, newshape[, order]) Gives a new shape to an array without changing its data.
- ravel(a[, order]) Return a contiguous flattened array.
- ndarray.flat A 1-D iterator over the array.
- ndarray.flatten([order]) Return a copy of the array collapsed into one dimension.
Transpose-like operations
- moveaxis(a, source, destination) Move axes of an array to new positions.
- rollaxis(a, axis[, start]) Roll the specified axis backwards, until it lies in a given position.
- swapaxes(a, axis1, axis2) Interchange two axes of an array.
- ndarray.T The transposed array.
- transpose(a[, axes]) Reverse or permute the axes of an array; returns the modified array.
Changing number of dimensions
- atleast_1d(*arys) Convert inputs to arrays with at least one dimension.
- atleast_2d(*arys) View inputs as arrays with at least two dimensions.
- atleast_3d(*arys) View inputs as arrays with at least three dimensions.
- broadcast Produce an object that mimics broadcasting.
- broadcast_to(array, shape[, subok]) Broadcast an array to a new shape.
- broadcast_arrays(*args[, subok]) Broadcast any number of arrays against each other.
- expand_dims(a, axis) Expand the shape of an array.
- squeeze(a[, axis]) Remove single-dimensional entries from the shape of an array.
Changing kind of array
- asarray(a[, dtype, order]) Convert the input to an array.
- asanyarray(a[, dtype, order]) Convert the input to an ndarray, but pass ndarray subclasses through.
- asmatrix(data[, dtype]) Interpret the input as a matrix.
- asfarray(a[, dtype]) Return an array converted to a float type.
- asfortranarray(a[, dtype]) Return an array (ndim >= 1) laid out in Fortran order in memory.
- ascontiguousarray(a[, dtype]) Return a contiguous array (ndim >= 1) in memory (C order).
- asarray_chkfinite(a[, dtype, order]) Convert the input to an array, checking for NaNs or Infs.
- asscalar(a) Convert an array of size 1 to its scalar equivalent.
- require(a[, dtype, requirements]) Return an ndarray of the provided type that satisfies requirements.
Joining arrays
- concatenate([axis, out]) Join a sequence of arrays along an existing axis.
- stack(arrays[, axis, out]) Join a sequence of arrays along a new axis.
- block(arrays) Assemble an nd-array from nested lists of blocks.
- vstack(tup) Stack arrays in sequence vertically (row wise).
- hstack(tup) Stack arrays in sequence horizontally (column wise).
- dstack(tup) Stack arrays in sequence depth wise (along third axis).
- column_stack(tup) Stack 1-D arrays as columns into a 2-D array.
Splitting arrays
- split(ary, indices_or_sections[, axis]) Split an array into multiple sub-arrays as views into ary.
- array_split(ary, indices_or_sections[, axis]) Split an array into multiple sub-arrays.
- dsplit(ary, indices_or_sections) Split array into multiple sub-arrays along the 3rd axis (depth).
- hsplit(ary, indices_or_sections) Split an array into multiple sub-arrays horizontally (column-wise).
- vsplit(ary, indices_or_sections) Split an array into multiple sub-arrays vertically (row-wise).
Tiling arrays
- tile(A, reps) Construct an array by repeating A the number of times given by reps.
- repeat(a, repeats[, axis]) Repeat elements of an array.
Adding and removing elements
- delete(arr, obj[, axis]) Return a new array with sub-arrays along an axis deleted.
- insert(arr, obj, values[, axis]) Insert values along the given axis before the given indices.
- append(arr, values[, axis]) Append values to the end of an array.
- resize(a, new_shape) Return a new array with the specified shape.
- trim_zeros(filt[, trim]) Trim the leading and/or trailing zeros from a 1-D array or sequence.
- unique(ar[, return_index, return_inverse, …]) Find the unique elements of an array.
Rearranging elements
- flip(m[, axis]) Reverse the order of elements in an array along the given axis.
- fliplr(m) Flip array in the left/right direction.
- flipud(m) Flip array in the up/down direction.
- reshape(a, newshape[, order]) Gives a new shape to an array without changing its data.
- roll(a, shift[, axis]) Roll array elements along a given axis.
- rot90(m[, k, axes]) Rotate an array by 90 degrees in the plane specified by axes.