Package Biskit :: Module SparseArray :: Class SparseArray

Class SparseArray

source code

Memory - saving representation of a sparse array.

Instance Methods

__init__(self, array_or_shape=0, typecode='f', default=0.)
Create a sparse array from a normal Numeric array or create an empty sparse array with a certain shape.

__setAll_1D(self, a)
Replace content of this sparseArray with values from Numeric array or list of numbers -- only for 1-dimensional arrays.

__setAll(self, a)
Replace content of this array with values from (multidimensional) Numeric array of numbers or list of lists (of lists..) of numbers.

str typecode(self)
Get type code of object.

number default(self)
Get default value, defined in __init__.

[ int ] nondefault(self)
Get a 1D list of indices that have a non-default value in a raveled version of this array.

[ number ] nondefault_values(self)
Get a 1D-list of all values != L.default() in the order that they would have in a raveled array.

array toarray(self)
Reconstruct dense array:

list tolist(self)
Reconstruct list from dense array:

put(self, i, v)
Replace one or several values, L.put( i, v )

__setMany(self, indices, values)
Add / replace values of the array.

int __pos(self, i)
Target position of given index in index list.

__setitem__(self, i, v)
Set position specifyed by the index i to value v.

__setitem_1D(self, i, v)
Set position specifyed by the index i to value v in a 1D array.

__getitem_1D(self, i)
Value for specified position:

__getitem__(self, i)
Value for specified position.

int __len__(self)
Get length: supports len( this )

0|1 __eq__(self, o)
Comparison equal: supports this == other

0|1 __ne__(self, o)
Comparison not equal: supports this != other

SparseArray __getslice__(self, a, b)
Slice a sparce array:

0|1 __contains__(self, v)
Sparse array contains value: supports v in this -> 0|1

int count(self, v)
Count the occuravces of value in sparse array:

int index(self, v)
position of first occurrence of value:

1|0 empty(self)
Check if object is empty.

__delitem__(self, i)
Delete value at index i: supports del this[i]

insert(self, i, v)
Insert value before index:

append(self, v, axis=0)
Enlarge this array along an axis by one value:

extend(self, lst)
Extend list by appending elements from the iterable:

Method Details

Class SparseArray

__init__(self, array_or_shape=0, typecode='f', default=0.) (Constructor)

__setAll_1D(self, a)

__setAll(self, a)

typecode(self)

default(self)

nondefault(self)

nondefault_values(self)

toarray(self)

tolist(self)

put(self, i, v)

__setMany(self, indices, values)

__pos(self, i)

__setitem__(self, i, v) (Index assignment operator)

__setitem_1D(self, i, v)

__getitem_1D(self, i)

__getitem__(self, i) (Indexing operator)

__len__(self) (Length operator)

__eq__(self, o) (Equality operator)

__ne__(self, o)

__getslice__(self, a, b) (Slicling operator)

__contains__(self, v) (In operator)

count(self, v)

index(self, v)

empty(self)

__delitem__(self, i) (Index deletion operator)

insert(self, i, v)

append(self, v, axis=0)

extend(self, lst)

init(self, array_or_shape=0, typecode='f', default=0.)
(Constructor)

setitem(self, i, v)
(Index assignment operator)

getitem(self, i)
(Indexing operator)

len(self)
(Length operator)

eq(self, o)
(Equality operator)

ne(self, o)

getslice(self, a, b)
(Slicling operator)

contains(self, v)
(In operator)

delitem(self, i)
(Index deletion operator)