pynbody.util

Routines used internally by pynbody.

Functions

arrays_are_same(a1, a2)	Returns True if a1 and a2 are numpy views pointing to the exact same underlying data; False otherwise.
bisect(left, right, f[, epsilon, eta, niter_max])	Finds the value x such that f(x)=0 for a monotonically increasing function f, using a binary search.
cutgz(x)	Strip the .gz ending off a string or path
deprecated(func[, message])	Mark a method or function as deprecated, optionally with a custom message.
equipartition(ar, nbins[, vmin, vmax])	Return nbins+1 monotonically increasing bin edges such that the number of items from ar in each bin is ~equal
gamma_inc(a, z[, eps])	Incomplete gamma function accepting complex z, based on algorithm given in numerical recipes (3rd ed)
open_(filename, *args)	Open a file, enabling use of gzip decompression
random_rotation_matrix()	Return a random rotation matrix (Haar measure for 3x3 case), using fast algorithm from Graphics Gems III
rational_matrix_inv(matrix)	A replacement for numpy linalg matrix inverse which handles fractions exactly.
set_array_if_not_same(a_store, a_in[, index])	Checks whether a_store and a_in ultimately point to the same buffer; if not, copy a_in into a_store.
thread_map(func, *args)	Run func in separate threads, mapping over the arguments in the same way as map(...)

Classes

ExecutionControl()	Class to control execution flow in a with statement.
SettingControl(dictionary, key, value)	Class to control a setting using a with statement.

Modules

hdf_vds	Toolset for creating a virtual dataset from multiple HDF5 files.
indexing_tricks	Tricks for manipulating indexes and slices into arrays for internal use by pynbody.
iter_subclasses	Provides a mix-in class for iterating over all subclasses of a given class, possibly in a user-specified order.