mmf.math.earray

earray

Extensible array.

Inheritance diagram for mmf.math.earray:

Extensible numpy arrays.

class mmf.math.earray.earray

Bases: numpy.ndarray

Extensible array.

Warning: Arrays may only be resized if there are no references to them to avoid memory corruption. One potential case where this occurs is at the command prompt where displaying an Earray sets the reference special variable “_”. Using print will avoid this problem.

>>> a = earray([1,2,3],maxrefcount=8+2) # Extra 2 for doctesting
>>> a[3] = 4
>>> a                       # Don't do this!
earray([1, 2, 3, 4])
>>> a[4] = 5                
ValueError: cannot resize an array that has been referenced or is referencing
another array in this way.  Use the resize function
>>> a = earray([1,2,3],maxrefcount=8+2)
>>> a[2,3] = 1
>>> print a
[[1 0 0 0]
 [2 0 0 0]
 [3 0 0 1]]
>>> print a[3,3]
0
>>> print a
[[1 0 0 0]
 [2 0 0 0]
 [3 0 0 1]
 [0 0 0 0]]

Methods

all([axis, out])	Returns True if all elements evaluate to True.
any([axis, out])	Returns True if any of the elements of a evaluate to True.
argmax([axis, out])	Return indices of the maximum values along the given axis.
argmin([axis, out])	Return indices of the minimum values along the given axis of a.
argsort([axis, kind, order])	Returns the indices that would sort this array.
astype(dtype[, order, casting, subok, copy])	Copy of the array, cast to a specified type.
byteswap(inplace)	Swap the bytes of the array elements
choose(choices[, out, mode])	Use an index array to construct a new array from a set of choices.
clip(a_min, a_max[, out])	Return an array whose values are limited to [a_min, a_max].
compress(condition[, axis, out])	Return selected slices of this array along given axis.
conj()	Complex-conjugate all elements.
conjugate()	Return the complex conjugate, element-wise.
copy([order, maskna])	Return a copy of the array.
cumprod([axis, dtype, out])	Return the cumulative product of the elements along the given axis.
cumsum([axis, dtype, out])	Return the cumulative sum of the elements along the given axis.
diagonal([offset, axis1, axis2])	Return specified diagonals.
dot(b[, out])	Dot product of two arrays.
dump(file)	Dump a pickle of the array to the specified file.
dumps()	Returns the pickle of the array as a string.
fill(value)	Fill the array with a scalar value.
flatten([order])	Return a copy of the array collapsed into one dimension.
getfield(dtype[, offset])	Returns a field of the given array as a certain type.
item(*args)	Copy an element of an array to a standard Python scalar and return it.
itemset(*args)	Insert scalar into an array (scalar is cast to array’s dtype, if possible)
max([axis, out])	Return the maximum along a given axis.
mean([axis, dtype, out])	Returns the average of the array elements along given axis.
min([axis, out])	Return the minimum along a given axis.
newbyteorder([new_order])	Return the array with the same data viewed with a different byte order.
nonzero()	Return the indices of the elements that are non-zero.
prod([axis, dtype, out])	Return the product of the array elements over the given axis
ptp([axis, out])	Peak to peak (maximum - minimum) value along a given axis.
put(indices, values[, mode])	Set a.flat[n] = values[n] for all n in indices.
ravel([order])	Return a flattened array.
repeat(repeats[, axis])	Repeat elements of an array.
reshape(shape[, order])	Returns an array containing the same data with a new shape.
resize(new_shape[, refcheck])	Change shape and size of array in-place.
round([decimals, out])	Return a with each element rounded to the given number of decimals.
searchsorted(v[, side, sorter])	Find indices where elements of v should be inserted in a to maintain order.
setasflat(arr)	Equivalent to a.flat = arr.flat, but is generally more efficient.
setfield(val, dtype[, offset])	Put a value into a specified place in a field defined by a data-type.
setflags([write, align, uic])	Set array flags WRITEABLE, ALIGNED, and UPDATEIFCOPY, respectively.
sort([axis, kind, order])	Sort an array, in-place.
squeeze([axis])	Remove single-dimensional entries from the shape of a.
std([axis, dtype, out, ddof])	Returns the standard deviation of the array elements along given axis.
sum([axis, dtype, out])	Return the sum of the array elements over the given axis.
swapaxes(axis1, axis2)	Return a view of the array with axis1 and axis2 interchanged.
take(indices[, axis, out, mode])	Return an array formed from the elements of a at the given indices.
tofile(fid[, sep, format])	Write array to a file as text or binary (default).
tolist()	Return the array as a (possibly nested) list.
tostring([order])	Construct a Python string containing the raw data bytes in the array.
trace([offset, axis1, axis2, dtype, out])	Return the sum along diagonals of the array.
transpose(*axes)	Returns a view of the array with axes transposed.
var([axis, dtype, out, ddof])	Returns the variance of the array elements, along given axis.
view([dtype, type])	New view of array with the same data.

__init__()

x.__init__(...) initializes x; see help(type(x)) for signature