def test_recarray():
# check roundtrip of structured array
dt = [('f1', 'f8'),
('f2', 'S10')]
arr = np.zeros((2,), dtype=dt)
arr[0]['f1'] = 0.5
arr[0]['f2'] = 'python'
arr[1]['f1'] = 99
arr[1]['f2'] = 'not perl'
stream = BytesIO()
savemat(stream, {'arr': arr})
d = loadmat(stream, struct_as_record=False)
a20 = d['arr'][0,0]
yield assert_equal, a20.f1, 0.5
yield assert_equal, a20.f2, 'python'
d = loadmat(stream, struct_as_record=True)
a20 = d['arr'][0,0]
yield assert_equal, a20['f1'], 0.5
yield assert_equal, a20['f2'], 'python'
# structs always come back as object types
yield assert_equal, a20.dtype, np.dtype([('f1', 'O'),
('f2', 'O')])
a21 = d['arr'].flat[1]
yield assert_equal, a21['f1'], 99
yield assert_equal, a21['f2'], 'not perl'
def create_Q_matrix(kappa, folder, ridge=1e-6):
GiCG = loadmat(folder + "GiCG.mat")["GiCG"]
G = loadmat(folder + "G.mat")["G"]
C0 = loadmat(folder + "C0.mat")["C0"]
Q = GiCG + 2 * (kappa ** 2) * G + (kappa ** 4) * C0
return Q + eye(Q.shape[0], Q.shape[1]) * ridge
def test_compression():
arr = np.zeros(100).reshape((5,20))
arr[2,10] = 1
stream = BytesIO()
savemat(stream, {'arr':arr})
raw_len = len(stream.getvalue())
vals = loadmat(stream)
yield assert_array_equal, vals['arr'], arr
stream = BytesIO()
savemat(stream, {'arr':arr}, do_compression=True)
compressed_len = len(stream.getvalue())
vals = loadmat(stream)
yield assert_array_equal, vals['arr'], arr
yield assert_, raw_len > compressed_len
# Concatenate, test later
arr2 = arr.copy()
arr2[0,0] = 1
stream = BytesIO()
savemat(stream, {'arr':arr, 'arr2':arr2}, do_compression=False)
vals = loadmat(stream)
yield assert_array_equal, vals['arr2'], arr2
stream = BytesIO()
savemat(stream, {'arr':arr, 'arr2':arr2}, do_compression=True)
vals = loadmat(stream)
yield assert_array_equal, vals['arr2'], arr2
def test_str_round():
# from report by Angus McMorland on mailing list 3 May 2010
stream = BytesIO()
in_arr = np.array(['Hello', 'Foob'])
out_arr = np.array(['Hello', 'Foob '])
savemat(stream, dict(a=in_arr))
res = loadmat(stream)
# resulted in ['HloolFoa', 'elWrdobr']
assert_array_equal(res['a'], out_arr)
stream.truncate(0)
stream.seek(0)
# Make Fortran ordered version of string
in_str = in_arr.tostring(order='F')
in_from_str = np.ndarray(shape=a.shape,
dtype=in_arr.dtype,
order='F',
buffer=in_str)
savemat(stream, dict(a=in_from_str))
assert_array_equal(res['a'], out_arr)
# unicode save did lead to buffer too small error
stream.truncate(0)
stream.seek(0)
in_arr_u = in_arr.astype('U')
out_arr_u = out_arr.astype('U')
savemat(stream, {'a': in_arr_u})
res = loadmat(stream)
assert_array_equal(res['a'], out_arr_u)
def test_multiple_open():
# Ticket #1039, on Windows: check that files are not left open
tmpdir = mkdtemp()
try:
x = dict(x=np.zeros((2, 2)))
fname = pjoin(tmpdir, "a.mat")
# Check that file is not left open
savemat(fname, x)
os.unlink(fname)
savemat(fname, x)
loadmat(fname)
os.unlink(fname)
# Check that stream is left open
f = open(fname, 'wb')
savemat(f, x)
f.seek(0)
f.close()
f = open(fname, 'rb')
loadmat(f)
f.seek(0)
f.close()
finally:
shutil.rmtree(tmpdir)
def plot_gaps(name, axis):
"""Takes the file name and coordinate axis and plots the marker gaps"""
runDict = {}
# load the matlab data file into a dictionary
mio.loadmat(name, mdict=runDict)
# name the rider depending on the filename
if name[0] == '1':
rider = 'Jodi'
runDict['gearing']=runDict['gear']
elif name[0] == '2':
rider = 'Victor'
else:
rider = 'Jason'
speed = np.average(runDict['V'])
# only look at one marker dimension (i.e. 'xori')
v = np.isnan(runDict[axis])
# set the figure size
fig = figure(1, figsize=(15., 9.))
matshow(v.T, fignum=1, aspect='auto', cmap=cm.gray)
yticks(range(np.shape(v)[1]), labels)
xlabel('Sample Number')
ylabel('Marker gaps in the {axis} coordinate'.format(axis=axis[0]))
title(('File: {name}, {rider} riding the {bike} at {speed} km/h while' +
' {condition} in gear {gear}').format(name=name, rider=rider, bike=runDict['bike'][0],
speed=str(speed), condition=runDict['condition'][0],
gear=runDict['gearing'][0][0]))
fig.savefig('gapImages/'+name[0:-4]+axis[0]+'.png')
show()
def test_1d_shape():
# Current 5 behavior is 1D -> column vector
arr = np.arange(5)
stream = BytesIO()
warn_ctx = WarningManager()
warn_ctx.__enter__()
try:
# silence warnings for tests
warnings.simplefilter('ignore')
savemat(stream, {'oned':arr}, format='5')
vals = loadmat(stream)
assert_equal(vals['oned'].shape, (5,1))
# Current 4 behavior is 1D -> row vector
stream = BytesIO()
savemat(stream, {'oned':arr}, format='4')
vals = loadmat(stream)
assert_equal(vals['oned'].shape, (1, 5))
for format in ('4', '5'):
# can be explicitly 'column' for oned_as
stream = BytesIO()
savemat(stream, {'oned':arr},
format=format,
oned_as='column')
vals = loadmat(stream)
assert_equal(vals['oned'].shape, (5,1))
# but different from 'row'
stream = BytesIO()
savemat(stream, {'oned':arr},
format=format,
oned_as='row')
vals = loadmat(stream)
assert_equal(vals['oned'].shape, (1,5))
finally:
warn_ctx.__exit__()
def test_1d_shape():
# Current 5 behavior is 1D -> column vector
arr = np.arange(5)
stream = StringIO()
savemat(stream, {'oned':arr}, format='5')
vals = loadmat(stream)
yield assert_equal, vals['oned'].shape, (5,1)
# Current 4 behavior is 1D -> row vector
arr = np.arange(5)
stream = StringIO()
savemat(stream, {'oned':arr}, format='4')
vals = loadmat(stream)
yield assert_equal, vals['oned'].shape, (1, 5)
for format in ('4', '5'):
# can be explicitly 'column' for oned_as
stream = StringIO()
savemat(stream, {'oned':arr},
format=format,
oned_as='column')
vals = loadmat(stream)
yield assert_equal, vals['oned'].shape, (5,1)
# but different from 'row'
stream = StringIO()
savemat(stream, {'oned':arr},
format=format,
oned_as='row')
vals = loadmat(stream)
yield assert_equal, vals['oned'].shape, (1,5)
def test_mat_struct_squeeze():
stream = BytesIO()
in_d = {"st": {"one": 1, "two": 2}}
savemat_future(stream, in_d)
# no error without squeeze
out_d = loadmat(stream, struct_as_record=False)
# previous error was with squeeze, with mat_struct
out_d = loadmat(stream, struct_as_record=False, squeeze_me=True)
def load_ozone_data(folder):
# actual observations
y = loadmat(folder + "y.mat")["y"][:, 0]
assert(y.ndim == 1)
# triangulation of globe
A = loadmat(folder + "A.mat")["A"]
return y, A
def create_Q_matrix(self, kappa):
folder = OzonePosterior.get_data_folder()
GiCG = loadmat(folder + "GiCG.mat")["GiCG"]
G = loadmat(folder + "G.mat")["G"]
C0 = loadmat(folder + "C0.mat")["C0"]
Q = GiCG + 2 * (kappa ** 2) * G + (kappa ** 4) * C0
return Q + eye(Q.shape[0], Q.shape[1]) * OzonePosterior.ridge
def load_ozone_data():
folder = OzonePosterior.get_data_folder()
y = loadmat(folder + "y.mat")["y"][:, 0]
assert(len(shape(y)) == 1)
A = loadmat(folder + "A.mat")["A"]
return y, A
def test_miutf8_for_miint8_compromise():
# Check reader accepts ascii as miUTF8 for array names
filename = pjoin(test_data_path, 'miutf8_array_name.mat')
res = loadmat(filename)
assert_equal(res['array_name'], [[1]])
# mat file with non-ascii utf8 name raises error
filename = pjoin(test_data_path, 'bad_miutf8_array_name.mat')
with assert_raises(ValueError):
loadmat(filename)
def test_warnings():
fname = pjoin(test_data_path, 'testdouble_7.1_GLNX86.mat')
warnings.simplefilter('error')
# This should not generate a warning
mres = loadmat(fname, struct_as_record=True)
# This neither
mres = loadmat(fname, struct_as_record=False)
# This should - because of deprecated system path search
yield assert_raises, DeprecationWarning, find_mat_file, fname
warnings.resetwarnings()
def test_loadmat_varnames():
# Test that we can get just one variable from a mat file using loadmat
eg_file = pjoin(test_data_path, "testmulti_7.4_GLNX86.mat")
sys_v_names = ["__globals__", "__header__", "__version__"]
vars = loadmat(eg_file)
assert_equal(set(vars.keys()), set(["a", "theta"] + sys_v_names))
vars = loadmat(eg_file, variable_names=["a"])
assert_equal(set(vars.keys()), set(["a"] + sys_v_names))
vars = loadmat(eg_file, variable_names=["theta"])
assert_equal(set(vars.keys()), set(["theta"] + sys_v_names))
def test_miuint32_compromise():
# Reader should accept miUINT32 for miINT32, but check signs
# mat file with miUINT32 for miINT32, but OK values
filename = pjoin(test_data_path, 'miuint32_for_miint32.mat')
res = loadmat(filename)
assert_equal(res['an_array'], np.arange(10)[None, :])
# mat file with miUINT32 for miINT32, with negative value
filename = pjoin(test_data_path, 'bad_miuint32.mat')
with assert_raises(ValueError):
loadmat(filename)
def test_mat_struct_squeeze():
stream = BytesIO()
in_d = {'st':{'one':1, 'two':2}}
savemat(stream, in_d)
# no error without squeeze
out_d = loadmat(stream, struct_as_record=False)
# previous error was with squeeze, with mat_struct
out_d = loadmat(stream,
struct_as_record=False,
squeeze_me=True,
)
def test_warnings():
# This test is an echo of the previous behavior, which was to raise a
# warning if the user triggered a search for mat files on the Python system
# path. We can remove the test in the next version after upcoming (0.13)
fname = pjoin(test_data_path, 'testdouble_7.1_GLNX86.mat')
with warnings.catch_warnings():
warnings.simplefilter('error')
# This should not generate a warning
mres = loadmat(fname, struct_as_record=True)
# This neither
mres = loadmat(fname, struct_as_record=False)
def test_warnings():
fname = pjoin(test_data_path, 'testdouble_7.1_GLNX86.mat')
warn_ctx = WarningManager()
warn_ctx.__enter__()
try:
warnings.simplefilter('error')
# This should not generate a warning
mres = loadmat(fname, struct_as_record=True)
# This neither
mres = loadmat(fname, struct_as_record=False)
# This should - because of deprecated system path search
assert_raises(DeprecationWarning, find_mat_file, fname)
finally:
warn_ctx.__exit__()
def test_save_object():
class C(object): pass
c = C()
c.field1 = 1
c.field2 = 'a string'
stream = BytesIO()
savemat_future(stream, {'c': c})
d = loadmat(stream, struct_as_record=False)
c2 = d['c'][0,0]
assert_equal(c2.field1, 1)
assert_equal(c2.field2, 'a string')
d = loadmat(stream, struct_as_record=True)
c2 = d['c'][0,0]
assert_equal(c2['field1'], 1)
assert_equal(c2['field2'], 'a string')
def test_save_object():
class C(object): pass
c = C()
c.field1 = 1
c.field2 = 'a string'
stream = StringIO()
savemat(stream, {'c': c})
d = loadmat(stream, struct_as_record=False)
c2 = d['c'][0,0]
yield assert_equal, c2.field1, 1
yield assert_equal, c2.field2, 'a string'
d = loadmat(stream, struct_as_record=True)
c2 = d['c'][0,0]
yield assert_equal, c2['field1'], 1
yield assert_equal, c2['field2'], 'a string'
def test_gzip_simple():
xdense = np.zeros((20,20))
xdense[2,3] = 2.3
xdense[4,5] = 4.5
x = SP.csc_matrix(xdense)
name = 'gzip_test'
expected = {'x':x}
format = '4'
tmpdir = mkdtemp()
try:
fname = pjoin(tmpdir,name)
mat_stream = gzip.open(fname,mode='wb')
savemat(mat_stream, expected, format=format)
mat_stream.close()
mat_stream = gzip.open(fname,mode='rb')
actual = loadmat(mat_stream, struct_as_record=True)
mat_stream.close()
finally:
shutil.rmtree(tmpdir)
assert_array_almost_equal(actual['x'].todense(),
expected['x'].todense(),
err_msg=repr(actual))
def test_skip_variable():
# Test skipping over the first of two variables in a MAT file
# using mat_reader_factory and put_variables to read them in.
#
# This is a regression test of a problem that's caused by
# using the compressed file reader seek instead of the raw file
# I/O seek when skipping over a compressed chunk.
#
# The problem arises when the chunk is large: this file has
# a 256x256 array of random (uncompressible) doubles.
#
filename = pjoin(test_data_path,'test_skip_variable.mat')
#
# Prove that it loads with loadmat
#
d = loadmat(filename, struct_as_record=True)
yield assert_, 'first' in d
yield assert_, 'second' in d
#
# Make the factory
#
factory = mat_reader_factory(filename, struct_as_record=True)
#
# This is where the factory breaks with an error in MatMatrixGetter.to_next
#
d = factory.get_variables('second')
yield assert_, 'second' in d
factory.mat_stream.close()
def test_unicode_mat4():
# Mat4 should save unicode as latin1
bio = BytesIO()
var = {'second_cat': u('Schrödinger')}
savemat(bio, var, format='4')
var_back = loadmat(bio)
assert_equal(var_back['second_cat'], var['second_cat'])
def test_fieldnames():
# Check that field names are as expected
stream = BytesIO()
savemat(stream, {'a': {'a':1, 'b':2}})
res = loadmat(stream)
field_names = res['a'].dtype.names
assert_equal(set(field_names), set(('a', 'b')))
def test_save_dict():
# Test that dict can be saved (as recarray), loaded as matstruct
d = {'a':1, 'b':2}
stream = StringIO()
savemat(stream, {'dict':d})
stream.seek(0)
vals = loadmat(stream)
def test_save_dict():
# Test that dict can be saved (as recarray), loaded as matstruct
dict_types = ((dict, False),)
try:
from collections import OrderedDict
except ImportError:
pass
else:
dict_types += ((OrderedDict, True),)
ab_exp = np.array([[(1, 2)]], dtype=[('a', object), ('b', object)])
ba_exp = np.array([[(2, 1)]], dtype=[('b', object), ('a', object)])
for dict_type, is_ordered in dict_types:
# Initialize with tuples to keep order for OrderedDict
d = dict_type([('a', 1), ('b', 2)])
stream = BytesIO()
savemat(stream, {'dict': d})
stream.seek(0)
vals = loadmat(stream)['dict']
assert_equal(set(vals.dtype.names), set(['a', 'b']))
if is_ordered: # Input was ordered, output in ab order
assert_array_equal(vals, ab_exp)
else: # Not ordered input, either order output
if vals.dtype.names[0] == 'a':
assert_array_equal(vals, ab_exp)
else:
assert_array_equal(vals, ba_exp)
def test_multiple_fieldnames():
# Example provided by Dharhas Pothina
# Extracted using mio5.varmats_from_mat
multi_fname = pjoin(TEST_DATA_PATH, "nasty_duplicate_fieldnames.mat")
vars = loadmat(multi_fname)
funny_names = vars["Summary"].dtype.names
assert_(set(["_1_Station_Q", "_2_Station_Q", "_3_Station_Q"]).issubset(funny_names))
def test_warnings():
fname = join(test_data_path, 'testdouble_7.1_GLNX86.mat')
warnings.simplefilter('error')
# This should not generate a warning
mres = loadmat(fname, struct_as_record=True)
# This neither
mres = loadmat(fname, struct_as_record=False)
# This should
yield assert_raises, FutureWarning, loadmat, fname
# This too
yield assert_raises, FutureWarning, find_mat_file, fname
# we need kwargs for this one
yield (lambda a, k: assert_raises(*a, **k),
(DeprecationWarning, loadmat, fname),
{'struct_as_record':True, 'basename':'raw'})
warnings.resetwarnings()
def readSamples(self, fileName, key,recalc=False,samples=None):
fn = fileName + ".pre"
try:
if recalc: raise IOError()
with open(fn): pass
print "precalculated file present"
self.mu, self.cov = hsplit(mat(fromfile(fn).reshape((3,-1))),[1])
except IOError:
if samples != None:
self._samples = samples
print "got samples: " , self._samples
else:
print "no file present, calculating..."
smpls = loadmat(fileName)[key]
print "loaded from mat file"
self._samples = mat(smpls)
print "reshaped into samples"
self.mu = sum(self._samples, axis=1) / self._samples.shape[1]
print "mu=", str(self.mu)
sampdiffmu = self._samples - self.mu
self.cov = sampdiffmu*sampdiffmu.T / self._samples.shape[1]
print"cov=", str(self.cov)
mat(hstack((self.mu,self.cov))).tofile(fn)
self._invCov = self.cov.I
self._detCov = det(self.cov)
self._multConst = 1 / sqrt((2 * pi) ** 3 * self._detCov)
def test_empty_struct():
# ticket 885
filename = pjoin(test_data_path, 'test_empty_struct.mat')
# before ticket fix, this would crash with ValueError, empty data
# type
d = loadmat(filename, struct_as_record=True)
a = d['a']
assert_equal(a.shape, (1, 1))
assert_equal(a.dtype, np.dtype(object))
assert_(a[0, 0] is None)
stream = BytesIO()
arr = np.array((), dtype='U')
# before ticket fix, this used to give data type not understood
savemat(stream, {'arr': arr})
d = loadmat(stream)
a2 = d['arr']
assert_array_equal(a2, arr)
def test_scalar_squeeze():
stream = BytesIO()
in_d = {'scalar': [[0.1]], 'string': 'my name', 'st': {'one': 1, 'two': 2}}
savemat(stream, in_d)
out_d = loadmat(stream, squeeze_me=True)
assert_(isinstance(out_d['scalar'], float))
assert_(isinstance(out_d['string'], string_types))
assert_(isinstance(out_d['st'], np.ndarray))
def test_save_object():
class C(object):
pass
c = C()
c.field1 = 1
c.field2 = 'a string'
stream = BytesIO()
savemat(stream, {'c': c})
d = loadmat(stream, struct_as_record=False)
c2 = d['c'][0, 0]
assert_equal(c2.field1, 1)
assert_equal(c2.field2, 'a string')
d = loadmat(stream, struct_as_record=True)
c2 = d['c'][0, 0]
assert_equal(c2['field1'], 1)
assert_equal(c2['field2'], 'a string')
def test_sparse_in_struct():
# reproduces bug found by DC where Cython code was insisting on
# ndarray return type, but getting sparse matrix
st = {'sparsefield': SP.coo_matrix(np.eye(4))}
stream = BytesIO()
savemat(stream, {'a': st})
d = loadmat(stream, struct_as_record=True)
yield assert_array_equal, d['a'][0, 0]['sparsefield'].todense(), np.eye(4)
def _load_check_case(name, files, case):
for file_name in files:
matdict = loadmat(file_name, struct_as_record=True)
label = "test %s; file %s" % (name, file_name)
for k, expected in case.items():
k_label = "%s, variable %s" % (label, k)
assert_(k in matdict, "Missing key at %s" % k_label)
_check_level(k_label, expected, matdict[k])
def test_save_empty_dict():
# saving empty dict also gives empty struct
stream = BytesIO()
savemat(stream, {'arr': {}})
d = loadmat(stream)
a = d['arr']
assert_equal(a.shape, (1, 1))
assert_equal(a.dtype, np.dtype(object))
assert_(a[0, 0] is None)
def test_miutf8_for_miint8_compromise():
# Check reader accepts ascii as miUTF8 for array names
filename = pjoin(test_data_path, 'miutf8_array_name.mat')
res = loadmat(filename)
assert_equal(res['array_name'], [[1]])
# mat file with non-ascii utf8 name raises error
filename = pjoin(test_data_path, 'bad_miutf8_array_name.mat')
with warnings.catch_warnings(record=True): # Py3k ResourceWarning
assert_raises(ValueError, loadmat, filename)
def load_markers(matfile, label_file_path, fs):
mrk_in_samples = matfile['mrk']['pos'][0, 0].squeeze()
mrk_in_ms = mrk_in_samples * 1000.0 / fs
mrk_code = matfile['mrk']['y'][0, 0].squeeze()
labels = loadmat(label_file_path)
true_y = labels['true_y'].squeeze()
assert len(true_y) == len(mrk_code)
mrk_code = true_y
return mrk_in_ms, mrk_code
def test_miuint32_compromise():
# Reader should accept miUINT32 for miINT32, but check signs
# mat file with miUINT32 for miINT32, but OK values
filename = pjoin(test_data_path, 'miuint32_for_miint32.mat')
res = loadmat(filename)
assert_equal(res['an_array'], np.arange(10)[None, :])
# mat file with miUINT32 for miINT32, with negative value
filename = pjoin(test_data_path, 'bad_miuint32.mat')
assert_raises(ValueError, loadmat, filename)
def test_warnings():
fname = join(test_data_path, 'testdouble_7.1_GLNX86.mat')
warnings.simplefilter('error')
# This should not generate a warning
mres = loadmat(fname, struct_as_record=True)
# This neither
mres = loadmat(fname, struct_as_record=False)
# This should
yield assert_raises, FutureWarning, loadmat, fname
# This too
yield assert_raises, FutureWarning, find_mat_file, fname
# we need kwargs for this one
yield (lambda a, k: assert_raises(*a, **k), (DeprecationWarning, loadmat,
fname), {
'struct_as_record': True,
'basename': 'raw'
})
warnings.resetwarnings()
def test_multiple_fieldnames():
# Example provided by Dharhas Pothina
# Extracted using mio5.varmats_from_mat
multi_fname = pjoin(TEST_DATA_PATH, 'nasty_duplicate_fieldnames.mat')
vars = loadmat(multi_fname)
funny_names = vars['Summary'].dtype.names
assert_(
set(['_1_Station_Q', '_2_Station_Q',
'_3_Station_Q']).issubset(funny_names))
def test_1d_shape():
# New 5 behavior is 1D -> row vector
arr = np.arange(5)
for format in ('4', '5'):
# Column is the default
stream = BytesIO()
savemat(stream, {'oned': arr}, format=format)
vals = loadmat(stream)
assert_equal(vals['oned'].shape, (1, 5))
# can be explicitly 'column' for oned_as
stream = BytesIO()
savemat(stream, {'oned': arr}, format=format, oned_as='column')
vals = loadmat(stream)
assert_equal(vals['oned'].shape, (5, 1))
# but different from 'row'
stream = BytesIO()
savemat(stream, {'oned': arr}, format=format, oned_as='row')
vals = loadmat(stream)
assert_equal(vals['oned'].shape, (1, 5))
def test_regression_653():
# Saving a dictionary with only invalid keys used to raise an error. Now we
# save this as an empty struct in matlab space.
sio = BytesIO()
savemat(sio, {'d': {1: 2}}, format='5')
back = loadmat(sio)['d']
# Check we got an empty struct equivalent
assert_equal(back.shape, (1, 1))
assert_equal(back.dtype, np.dtype(object))
assert_(back[0, 0] is None)
def test_miutf8_for_miint8_compromise():
# Check reader accepts ascii as miUTF8 for array names
filename = pjoin(test_data_path, 'miutf8_array_name.mat')
res = loadmat(filename)
assert_equal(res['array_name'], [[1]])
# mat file with non-ascii utf8 name raises error
filename = pjoin(test_data_path, 'bad_miutf8_array_name.mat')
with suppress_warnings() as sup:
sup.filter(message="unclosed file") # Py3k ResourceWarning
assert_raises(ValueError, loadmat, filename)
def test_empty_sparse():
# Can we read empty sparse matrices?
sio = BytesIO()
import scipy.sparse
empty_sparse = scipy.sparse.csr_matrix([[0, 0], [0, 0]])
savemat(sio, dict(x=empty_sparse))
sio.seek(0)
res = loadmat(sio)
assert_array_equal(res['x'].shape, empty_sparse.shape)
assert_array_equal(res['x'].todense(), 0)
def test_miuint32_compromise():
# Reader should accept miUINT32 for miINT32, but check signs
# mat file with miUINT32 for miINT32, but OK values
filename = pjoin(test_data_path, 'miuint32_for_miint32.mat')
res = loadmat(filename)
assert_equal(res['an_array'], np.arange(10)[None, :])
# mat file with miUINT32 for miINT32, with negative value
filename = pjoin(test_data_path, 'bad_miuint32.mat')
with suppress_warnings() as sup:
sup.filter(message="unclosed file") # Py3k ResourceWarning
assert_raises(ValueError, loadmat, filename)
def test_round_types():
# Check that saving, loading preserves dtype in most cases
arr = np.arange(10)
stream = BytesIO()
for dts in ('f8','f4','i8','i4','i2','i1',
'u8','u4','u2','u1','c16','c8'):
stream.truncate(0)
stream.seek(0) # needed for BytesIO in python 3
savemat_future(stream, {'arr': arr.astype(dts)})
vars = loadmat(stream)
assert_equal(np.dtype(dts), vars['arr'].dtype)
def load(self):
matfile = loadmat(self.filename)
cnt, fs = self.load_signal(matfile)
# load markers
mrk_in_ms, mrk_codes = self.load_markers(matfile, self.label_file_path,
fs, len(cnt.data))
cnt.markers = zip(mrk_in_ms, mrk_codes)
assert fs == 512
cnt.fs = fs
return cnt
def test_input_simulation(self):
"""
This tests that input simulation works.
"""
self.m_SENS = JMUModel('QuadTankSens.jmu')
self.SENS = JMIDAESens(self.m_SENS)
path_result = os.path.join(get_files_path(), 'Results',
'qt_par_est_data.mat')
data = loadmat(path_result,appendmat=False)
# Extract data series
t_meas = data['t'][6000::100,0]-60
u1 = data['u1_d'][6000::100,0]
u2 = data['u2_d'][6000::100,0]
# Build input trajectory matrix for use in simulation
u_data = N.transpose(N.vstack((t_meas,u1,u2)))
u_traj = TrajectoryLinearInterpolation(u_data[:,0],
u_data[:,1:])
input_object = (['u1','u2'], u_traj)
qt_mod = JMIDAESens(self.m_SENS, input_object)
qt_sim = IDA(qt_mod)
#Store data continuous during the simulation, important when solving a
#problem with sensitivites.
qt_sim.report_continuously = True
#Value used when IDA estimates the tolerances on the parameters
qt_sim.pbar = qt_mod.p0
#Let Sundials find consistent initial conditions by use of 'IDA_YA_YDP_INIT'
qt_sim.make_consistent('IDA_YA_YDP_INIT')
#Simulate
qt_sim.simulate(60) #Simulate 4 seconds with 400 communication points
#write_data(qt_sim)
res = ResultDymolaTextual('QuadTankSens_result.txt')
dx1da1 = res.get_variable_data('dx1/da1')
dx1da2 = res.get_variable_data('dx1/da2')
dx4da1 = res.get_variable_data('dx4/da1')
nose.tools.assert_almost_equal(dx1da2.x[0], 0.000000, 4)
nose.tools.assert_almost_equal(dx1da2.x[-1], 0.00000, 4)
def test_save_dict():
# Test that both dict and OrderedDict can be saved (as recarray),
# loaded as matstruct, and preserve order
ab_exp = np.array([[(1, 2)]], dtype=[('a', object), ('b', object)])
for dict_type in (dict, OrderedDict):
# Initialize with tuples to keep order
d = dict_type([('a', 1), ('b', 2)])
stream = BytesIO()
savemat(stream, {'dict': d})
stream.seek(0)
vals = loadmat(stream)['dict']
assert_equal(vals.dtype.names, ('a', 'b'))
assert_array_equal(vals, ab_exp)
def test_mat4_3d():
# test behavior when writing 3D arrays to matlab 4 files
stream = BytesIO()
arr = np.arange(24).reshape((2, 3, 4))
warnings.simplefilter('error')
assert_raises(DeprecationWarning, savemat_future, stream, {'a': arr}, True,
'4')
warnings.resetwarnings()
# For now, we save a 3D array as 2D
warnings.simplefilter('ignore')
savemat_future(stream, {'a': arr}, format='4')
warnings.resetwarnings()
d = loadmat(stream)
assert_array_equal(d['a'], arr.reshape((6, 4)))
def test_recarray():
# check roundtrip of structured array
dt = [('f1', 'f8'), ('f2', 'S10')]
arr = np.zeros((2, ), dtype=dt)
arr[0]['f1'] = 0.5
arr[0]['f2'] = 'python'
arr[1]['f1'] = 99
arr[1]['f2'] = 'not perl'
stream = BytesIO()
savemat(stream, {'arr': arr})
d = loadmat(stream, struct_as_record=False)
a20 = d['arr'][0, 0]
assert_equal(a20.f1, 0.5)
assert_equal(a20.f2, 'python')
d = loadmat(stream, struct_as_record=True)
a20 = d['arr'][0, 0]
assert_equal(a20['f1'], 0.5)
assert_equal(a20['f2'], 'python')
# structs always come back as object types
assert_equal(a20.dtype, np.dtype([('f1', 'O'), ('f2', 'O')]))
a21 = d['arr'].flat[1]
assert_equal(a21['f1'], 99)
assert_equal(a21['f2'], 'not perl')
def test_1d_shape():
# Current 5 behavior is 1D -> column vector
arr = np.arange(5)
stream = StringIO()
savemat(stream, {'oned': arr}, format='5')
vals = loadmat(stream)
yield assert_equal, vals['oned'].shape, (5, 1)
# Current 4 behavior is 1D -> row vector
arr = np.arange(5)
stream = StringIO()
savemat(stream, {'oned': arr}, format='4')
vals = loadmat(stream)
yield assert_equal, vals['oned'].shape, (1, 5)
for format in ('4', '5'):
# can be explicitly 'column' for oned_as
stream = StringIO()
savemat(stream, {'oned': arr}, format=format, oned_as='column')
vals = loadmat(stream)
yield assert_equal, vals['oned'].shape, (5, 1)
# but different from 'row'
stream = StringIO()
savemat(stream, {'oned': arr}, format=format, oned_as='row')
vals = loadmat(stream)
yield assert_equal, vals['oned'].shape, (1, 5)
def load_matlab(filename, keys):
mat = loadmat(filename)
dat = []
if type(keys) == str:
keys = [keys]
for key in keys:
if key not in mat:
print('%s not present in %s, skipping.' % (key, filename))
continue
dat.append(mat[key])
if len(dat) == 1:
return dat[0]
return dat
def run_demo(with_plots=True):
# Load measurement data from file
data = loadmat(os.path.join(curr_dir, 'files', 'FurutaData.mat'), appendmat=False)
# Extract data series
t_meas = data['time'][:,0]
phi_meas = data['phi'][:,0]
theta_meas = data['theta'][:,0]
data = N.array([t_meas, phi_meas, theta_meas]).transpose()
#Compile the model
name = compile_fmu("Furuta", os.path.join(curr_dir, 'files', 'Furuta.mo'))
model = load_fmu(name)
res_opt = model.estimate(parameters=["armFriction", "pendulumFriction"],
measurements = (['armJoint.phi', 'pendulumJoint.phi'], data))
# Set optimal parameter values into the model
model.set('armFriction', res_opt["armFriction"])
model.set('pendulumFriction', res_opt["pendulumFriction"])
opts = model.simulate_options()
opts['filter'] = ['armJoint.phi', 'pendulumJoint.phi']
# Simulate model response with optimal parameter values
res = model.simulate(start_time=0., final_time=40)
# Load optimal simulation result
phi_opt = res['armJoint.phi']
theta_opt = res['pendulumJoint.phi']
t_opt = res['time']
assert N.abs(res.final('armJoint.phi') + 0.313) < 3e-3
assert N.abs(res.final('pendulumJoint.phi') - 3.130) < 3e-3
assert N.abs(res.final('time') - 40.0) < 1e-3
if with_plots:
plt.figure(1)
plt.subplot(2,1,1)
plt.plot(t_opt, theta_opt, linewidth=1, label='Simulation optimal parameters')
plt.plot(t_meas, theta_meas, linewidth=1, label='Physical data')
plt.legend()
plt.subplot(2,1,2)
plt.plot(t_opt, phi_opt, linewidth=1, label='Simulation optimal parameters')
plt.plot(t_meas, phi_meas, linewidth=1, label='Physical data')
plt.legend()
plt.show()
def load(self):
matfile = loadmat(self.filename)
cnt, fs = self.load_signal(matfile)
# load markers
if self.label_file_path is None:
mrk_in_ms, mrk_codes = self.load_markers_from_signal_file(
matfile, fs)
else:
mrk_in_ms, mrk_codes = self.load_markers_from_label_file(
self.label_file_path, fs)
cnt.markers = zip(mrk_in_ms, mrk_codes)
assert fs == 1000
cnt.fs = fs
return cnt
def get_results(**kwargs):
"""
Gets the labels from precomputed clustering
"""
configuration = {
'path': '/media/robbis/DATA/fmri/movie_viviana/',
'band': 'alpha',
'filetype': 'masked',
'fname': 'mat_corr_sub_%s.mat',
'conditions': ['movie', 'scramble', 'rest'],
'state_res_fname': "clustering_labels_%s_maxk_%s_%s_%s.pyobj",
'max_k': 15,
'method': 'variance+mean',
'filter': 'none'
}
configuration.update(kwargs)
path = os.path.join(configuration['path'], configuration['band'])
filetype = configuration['filetype']
method = configuration['method']
max_k = configuration['max_k']
conditions = configuration['conditions']
filter_type = configuration['filter']
clustering = dict()
X = dict()
for condition in conditions:
path_cluster = "%s/%s/%s/%s" % (filetype, method, filter_type,
condition)
path_cluster = os.path.join(path, path_cluster)
fname = configuration['state_res_fname'] % (condition, str(max_k),
method, filetype)
path_file = os.path.join(path_cluster, fname)
logger.info("Reading results from " + path_file)
clustering_ = pickle.load(file(path_file, 'r'))
clustering[condition] = clustering_
X[condition] = loadmat(os.path.join(
path_cluster, "filtered_data.mat"))['filtered_data']
return X, clustering
def test_empty_sparse():
# Can we read empty sparse matrices?
sio = BytesIO()
import scipy.sparse
empty_sparse = scipy.sparse.csr_matrix([[0, 0], [0, 0]])
savemat(sio, dict(x=empty_sparse))
sio.seek(0)
res = loadmat(sio)
assert_array_equal(res['x'].shape, empty_sparse.shape)
assert_array_equal(res['x'].todense(), 0)
# Do empty sparse matrices get written with max nnz 1?
# See https://github.com/scipy/scipy/issues/4208
sio.seek(0)
reader = MatFile5Reader(sio)
reader.initialize_read()
reader.read_file_header()
hdr, _ = reader.read_var_header()
assert_equal(hdr.nzmax, 1)
def test_varmats_from_mat():
# Make a mat file with several variables, write it, read it back
names_vars = (('arr', mlarr(np.arange(10))),
('mystr', mlarr('a string')),
('mynum', mlarr(10)))
# Dict like thing to give variables in defined order
class C(object):
def items(self): return names_vars
stream = BytesIO()
savemat_future(stream, C())
varmats = varmats_from_mat(stream)
assert_equal(len(varmats), 3)
for i in range(3):
name, var_stream = varmats[i]
exp_name, exp_res = names_vars[i]
assert_equal(name, exp_name)
res = loadmat(var_stream)
assert_array_equal(res[name], exp_res)
def test_logical_sparse():
# Test we can read logical sparse stored in mat file as bytes.
# See https://github.com/scipy/scipy/issues/3539.
# In some files saved by MATLAB, the sparse data elements (Real Part
# Subelement in MATLAB speak) are stored with apparent type double
# (miDOUBLE) but are in fact single bytes.
filename = pjoin(test_data_path, 'logical_sparse.mat')
# Before fix, this would crash with:
# ValueError: indices and data should have the same size
d = loadmat(filename, struct_as_record=True)
log_sp = d['sp_log_5_4']
assert_(isinstance(log_sp, SP.csc_matrix))
assert_equal(log_sp.dtype.type, np.bool_)
assert_array_equal(
log_sp.toarray(),
[[True, True, True, False], [False, False, True, False],
[False, False, True, False], [False, False, False, False],
[False, False, False, False]])
