def test04(self):
"""Testing `iter()` method with large zero arrays"""
a = np.zeros(1e4, dtype='f8')
b = ca.carray(a, chunklen=100)
c = ca.fromiter((v for v in b), dtype='f8', count=len(a))
#print "c ->", repr(c)
assert_array_equal(a, c[:], "iterator fails on zeros")
def test04(self):
"""Testing `iter()` method with large zero arrays"""
a = np.zeros(1e4, dtype='f8')
b = ca.carray(a, chunklen=100)
c = ca.fromiter((v for v in b), dtype='f8', count=len(a))
#print "c ->", repr(c)
assert_array_equal(a, c[:], "iterator fails on zeros")
def test01b(self):
"""Testing fromiter (long iter, chunk is multiple of iter length)"""
N = 1e4
a = (i for i in xrange(int(N)))
b = ca.fromiter(a, dtype='f8', chunklen=1000, count=int(N))
c = np.arange(N)
assert_array_equal(b[:], c, "fromiter does not work correctly")
def test00(self):
"""Testing resize() (decreasing)"""
N = 100
ra = np.fromiter(((i, i * 2.) for i in xrange(N - 2)), dtype='i4,f8')
t = ca.fromiter(((i, i * 2.) for i in xrange(N)), 'i4,f8', N)
t.resize(N - 2)
assert_array_equal(t[:], ra, "ctable values are not correct")
def test01a(self):
"""Testing fromiter (long iter)"""
N = 1e4
a = (i for i in xrange(int(N)))
b = ca.fromiter(a, dtype='f8', count=int(N))
c = np.arange(N)
assert_array_equal(b[:], c, "fromiter does not work correctly")
def test01a(self):
"""Testing fromiter (long iter)"""
N = 1e4
a = (i for i in xrange(int(N)))
b = ca.fromiter(a, dtype='f8', count=int(N))
c = np.arange(N)
assert_array_equal(b[:], c, "fromiter does not work correctly")
def test01(self):
"""Testing trim() with NumPy scalar values"""
N = 10000
ra = np.fromiter(((i, i*2.) for i in xrange(N-200)), dtype='i4,f8')
t = ca.fromiter(((i, i*2.) for i in xrange(N)), 'i4,f8', N)
t.trim(np.int(200))
assert_array_equal(t[:], ra, "ctable values are not correct")
def test01b(self):
"""Testing fromiter (long iter, chunk is multiple of iter length)"""
N = 1e4
a = (i for i in xrange(int(N)))
b = ca.fromiter(a, dtype='f8', chunklen=1000, count=int(N))
c = np.arange(N)
assert_array_equal(b[:], c, "fromiter does not work correctly")
def test02(self):
"""Testing trim() with a complete trim"""
N = 100
ra = np.fromiter(((i, i*2.) for i in xrange(0)), dtype='i4,f8')
t = ca.fromiter(((i, i*2.) for i in xrange(N)), 'i4,f8', N)
t.trim(N)
self.assert_(len(ra) == len(t), "Lengths are not equal")
def test02(self):
"""Testing trim() with a complete trim"""
N = 100
ra = np.fromiter(((i, i * 2.) for i in xrange(0)), dtype='i4,f8')
t = ca.fromiter(((i, i * 2.) for i in xrange(N)), 'i4,f8', N)
t.trim(N)
self.assert_(len(ra) == len(t), "Lengths are not equal")
def test01(self):
"""Testing trim() with NumPy scalar values"""
N = 10000
ra = np.fromiter(((i, i * 2.) for i in xrange(N - 200)), dtype='i4,f8')
t = ca.fromiter(((i, i * 2.) for i in xrange(N)), 'i4,f8', N)
t.trim(np.int(200))
assert_array_equal(t[:], ra, "ctable values are not correct")
def test00(self):
"""Testing resize() (decreasing)"""
N = 100
ra = np.fromiter(((i, i*2.) for i in xrange(N-2)), dtype='i4,f8')
t = ca.fromiter(((i, i*2.) for i in xrange(N)), 'i4,f8', N)
t.resize(N-2)
assert_array_equal(t[:], ra, "ctable values are not correct")
def test07(self):
"""Testing `iter()` method with `limit` and `skip`"""
a = np.arange(1e4, dtype='f8')
b = ca.carray(a, chunklen=100)
c = ca.fromiter((v for v in b.iter(limit=1010, skip=1010)), dtype='f8',
count=1010)
#print "c ->", repr(c)
assert_array_equal(a[1010:2020], c, "iterator fails on zeros")
def test03a(self):
"""Testing ctable creation from large iterator"""
N = 10*1000
ra = np.fromiter(((i, i*2.) for i in xrange(N)), dtype='i4,f8')
t = ca.fromiter(((i, i*2.) for i in xrange(N)), dtype='i4,f8', count=N)
#print "t->", `t`
#print "ra[:]", ra[:]
assert_array_equal(t[:], ra, "ctable values are not correct")
def test07(self):
"""Testing `iter()` method with `limit` and `skip`"""
a = np.arange(1e4, dtype='f8')
b = ca.carray(a, chunklen=100)
c = ca.fromiter((v for v in b.iter(limit=1010, skip=1010)),
dtype='f8',
count=1010)
#print "c ->", repr(c)
assert_array_equal(a[1010:2020], c, "iterator fails on zeros")
def getobject(self):
if self.flavor == 'carray':
obj = ca.zeros(10, dtype="i1", rootdir=self.rootdir)
assert type(obj) == ca.carray
elif self.flavor == 'ctable':
obj = ca.fromiter(((i,i*2) for i in range(10)), dtype='i2,f4',
count=10, rootdir=self.rootdir)
assert type(obj) == ca.ctable
return obj
def test01(self):
"""Testing resize() (increasing)"""
N = 100
ra = np.fromiter(((i, i * 2.) for i in xrange(N + 4)), dtype='i4,f8')
t = ca.fromiter(((i, i * 2.) for i in xrange(N)), 'i4,f8', N)
t.resize(N + 4)
ra['f0'][N:] = np.zeros(4)
ra['f1'][N:] = np.zeros(4)
assert_array_equal(t[:], ra, "ctable values are not correct")
def test01(self):
"""Testing resize() (increasing)"""
N = 100
ra = np.fromiter(((i, i*2.) for i in xrange(N+4)), dtype='i4,f8')
t = ca.fromiter(((i, i*2.) for i in xrange(N)), 'i4,f8', N)
t.resize(N+4)
ra['f0'][N:] = np.zeros(4)
ra['f1'][N:] = np.zeros(4)
assert_array_equal(t[:], ra, "ctable values are not correct")
def test03a(self):
"""Testing ctable creation from large iterator"""
N = 10 * 1000
ra = np.fromiter(((i, i * 2.) for i in xrange(N)), dtype='i4,f8')
t = ca.fromiter(((i, i * 2.) for i in xrange(N)),
dtype='i4,f8',
count=N)
#print "t->", `t`
#print "ra[:]", ra[:]
assert_array_equal(t[:], ra, "ctable values are not correct")
def test_ctable(clevel):
enter()
tc = ca.fromiter((mv+np.random.rand(NC)-mv for i in xrange(int(NR))),
dtype=dt,
cparams=ca.cparams(clevel),
count=int(NR))
after_create()
out = np.fromiter((row for row in tc.where(squery, 'f1,f3')),
dtype="f8,f8")
after_query()
return out
def test_ctable(clevel):
enter()
tc = ca.fromiter((mv + np.random.rand(NC) - mv for i in xrange(int(NR))),
dtype=dt,
cparams=ca.cparams(clevel),
count=int(NR))
after_create()
out = np.fromiter((row for row in tc.where(squery, 'f1,f3')),
dtype="f8,f8")
after_query()
return out
def test00(self):
"""Testing fromiter (short iter)"""
a = np.arange(1,111)
b = ca.fromiter(iter(a), dtype='i4', count=len(a))
assert_array_equal(b[:], a, "fromiter does not work correctly")
z = xrange(2, N + 2) print "Starting benchmark now for creating arrays..." # Create a ndarray #x = (i for i in xrange(N)) # true iterable t0 = time() out = np.fromiter(x, dtype='f8', count=N) print "Time for array--> %.3f" % (time() - t0, ) print "out-->", len(out) #ca.set_num_threads(ca.ncores//2) # Create a carray #x = (i for i in xrange(N)) # true iterable t0 = time() cout = ca.fromiter(x, dtype='f8', count=N, cparams=ca.cparams(clevel)) print "Time for carray--> %.3f" % (time() - t0, ) print "cout-->", len(cout) assert_array_equal(out, cout, "Arrays are not equal") # Create a carray (with unknown size) #x = (i for i in xrange(N)) # true iterable t0 = time() cout = ca.fromiter(x, dtype='f8', count=-1, cparams=ca.cparams(clevel)) print "Time for carray (count=-1)--> %.3f" % (time() - t0, ) print "cout-->", len(cout) assert_array_equal(out, cout, "Arrays are not equal") # Retrieve from a structured ndarray gen = ((i, j, k) for i, j, k in it.izip(x, y, z)) t0 = time()
def test02(self):
"""Testing fromiter (empty iter)"""
a = np.array([], dtype="f8")
b = ca.fromiter(iter(a), dtype='f8', count=-1)
assert_array_equal(b[:], a, "fromiter does not work correctly")
def test04b(self):
"""Testing fromiter method with large iterator with a hint"""
N = 10*1000
a = np.fromiter((i*2 for i in xrange(N)), dtype='f8', count=N)
b = ca.fromiter((i*2 for i in xrange(N)), dtype='f8', count=N)
assert_array_equal(b[:], a, "iterator with a hint fails")
def test03(self):
"""Testing fromiter (dtype conversion)"""
a = np.arange(101, dtype="f8")
b = ca.fromiter(iter(a), dtype='f4', count=len(a))
assert_array_equal(b[:], a, "fromiter does not work correctly")
z = xrange(2,N+2) print "Starting benchmark now for creating arrays..." # Create a ndarray #x = (i for i in xrange(N)) # true iterable t0 = time() out = np.fromiter(x, dtype='f8', count=N) print "Time for array--> %.3f" % (time()-t0,) print "out-->", len(out) #ca.set_num_threads(ca.ncores//2) # Create a carray #x = (i for i in xrange(N)) # true iterable t0 = time() cout = ca.fromiter(x, dtype='f8', count=N, cparams=ca.cparams(clevel)) print "Time for carray--> %.3f" % (time()-t0,) print "cout-->", len(cout) assert_array_equal(out, cout, "Arrays are not equal") # Create a carray (with unknown size) #x = (i for i in xrange(N)) # true iterable t0 = time() cout = ca.fromiter(x, dtype='f8', count=-1, cparams=ca.cparams(clevel)) print "Time for carray (count=-1)--> %.3f" % (time()-t0,) print "cout-->", len(cout) assert_array_equal(out, cout, "Arrays are not equal") # Retrieve from a structured ndarray gen = ((i,j,k) for i,j,k in it.izip(x,y,z)) t0 = time()
def test00(self):
"""Testing fromiter (short iter)"""
a = np.arange(1, 111)
b = ca.fromiter(iter(a), dtype='i4', count=len(a))
assert_array_equal(b[:], a, "fromiter does not work correctly")
def test04b(self):
"""Testing fromiter method with large iterator with a hint"""
N = 10 * 1000
a = np.fromiter((i * 2 for i in xrange(N)), dtype='f8', count=N)
b = ca.fromiter((i * 2 for i in xrange(N)), dtype='f8', count=N)
assert_array_equal(b[:], a, "iterator with a hint fails")
def test03(self):
"""Testing fromiter (dtype conversion)"""
a = np.arange(101, dtype="f8")
b = ca.fromiter(iter(a), dtype='f4', count=len(a))
assert_array_equal(b[:], a, "fromiter does not work correctly")
def test02(self):
"""Testing fromiter (empty iter)"""
a = np.array([], dtype="f8")
b = ca.fromiter(iter(a), dtype='f8', count=-1)
assert_array_equal(b[:], a, "fromiter does not work correctly")
