pydons 0.1.0

Python data manimulation add-ons

Pydons is a collection of numerical data manipulation add-ons.

MatStruct is an OrderedDict-based Matlab-like container. Typical usage:

import pydons
import numpy as np
struct = pydons.MatStruct()
struct.string = 'A string'
struct.list = ['list', 0, [1, 2]]
struct.numpy = np.random.rand(3,3)

IPython representation is customized:

In [12]: struct
Out[12]:
string: A string
  list: ['list', 0, [1, 2]]
 numpy: [[ 0.71539338  0.69970494  0.19328026]
 [ 0.28645949  0.15262059  0.23362895]
 [ 0.14518748  0.79911631  0.22522526]]

MatStruct can be serialized to HDF5 files using hdf5storage:

In [15]: struct.saveh5('struct.h5')
In [16]: pydons.MatStruct.loadh5('struct.h5')
Out[16]:
  list: ['list', 0, [1, 2]]
 numpy: [[ 0.71539338  0.69970494  0.19328026]
 [ 0.28645949  0.15262059  0.23362895]
 [ 0.14518748  0.79911631  0.22522526]]
string: A string

(the field order is not maintained—to be fixed soon). Matlab HDF5 files can be used as well. In this case, numpy arrays are transposed and additional Matlab fields are written in the file.

In [17]: struct.savemat('struct.mat')
In [18]: pydons.MatStruct.loadmat('struct.mat')
Out[18]:
  list: ['list', 0, [1, 2]]
 numpy: [[ 0.71539338  0.69970494  0.19328026]
 [ 0.28645949  0.15262059  0.23362895]
 [ 0.14518748  0.79911631  0.22522526]]
string: A string

This software is distributed under the MIT license (see the LICENSE file).