Esempio n. 1
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def ones(dshape, params=None):
    """ Create an Array and fill it with ones.

    Parameters
    ----------
    dshape : str, blaze.dshape instance
        Specifies the datashape of the outcome object.
    params : blaze.params object
        Any parameter supported by the backend library.

    Returns
    -------
    out : an Array object.

    """
    if isinstance(dshape, basestring):
        dshape = _dshape(dshape)
    shape, dtype = to_numpy(dshape)
    cparams, rootdir, format_flavor = to_cparams(params or _params())
    if rootdir is not None:
        carray.ones(shape, dtype, rootdir=rootdir, cparams=cparams)
        return open(rootdir)
    else:
        source = CArraySource(carray.ones(shape, dtype, cparams=cparams),
                              params=params)
        return Array(source)
Esempio n. 2
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def ones(dshape, params=None, eclass=_eclass.manifest):
    """ Create an Array and fill it with ones.

    Parameters
    ----------
    dshape : str, blaze.dshape instance
        Specifies the datashape of the outcome object.
    params : blaze.params object
        Any parameter supported by the backend library.

    Returns
    -------
    out : an Array object.

    """
    if isinstance(dshape, basestring):
        dshape = _dshape(dshape)
    shape, dtype = to_numpy(dshape)
    cparams, rootdir, format_flavor = to_cparams(params or _params())
    if rootdir is not None:
        carray.ones(shape, dtype, rootdir=rootdir, cparams=cparams)
        return open(rootdir)
    else:
        source = CArraySource(carray.ones(shape, dtype, cparams=cparams),
                              params=params)
        if eclass is _eclass.manifest:
            return Array(source)
        elif eclass is _eclass.delayed:
            return NDArray(source)
Esempio n. 3
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 def test02c(self):
     """Testing ones() constructor, with a string type"""
     a = np.ones(self.N, dtype='S3')
     ac = ca.ones(self.N, dtype='S3', rootdir=self.rootdir)
     #print "a-->", a, ac
     self.assert_(a.dtype == ac.dtype)
     self.assert_(np.all(a == ac[:]))
Esempio n. 4
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 def test02(self):
     """Testing `iter()` (w/ start, stop, step)"""
     a = np.ones((3, ), dtype="i4")
     b = ca.ones((1000, 3), dtype="i4")
     #print "b->", `b`
     for r in b.iter(15, 100, 3):
         assert_array_equal(a, r, "Arrays are not equal")
Esempio n. 5
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 def test01(self):
     """Testing `reshape()` (ndim -> unidim)"""
     a = np.ones(12, dtype="i4")
     c = ca.ones(12, dtype="i4").reshape((3, 4))
     b = c.reshape(12)
     #print "b->", `b`
     assert_array_equal(a, b, "Arrays are not equal")
Esempio n. 6
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 def test01(self):
     """Testing `reshape()` (ndim -> unidim)"""
     a = np.ones(12, dtype="i4")
     c = ca.ones(12, dtype="i4").reshape((3,4))
     b = c.reshape(12)
     #print "b->", `b`
     assert_array_equal(a, b, "Arrays are not equal")
Esempio n. 7
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 def test02c(self):
     """Testing ones() constructor, with a string type"""
     a = np.ones(self.N, dtype='S3')
     ac = ca.ones(self.N, dtype='S3', rootdir=self.rootdir)
     #print "a-->", a, ac
     self.assert_(a.dtype == ac.dtype)
     self.assert_(np.all(a == ac[:]))
Esempio n. 8
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 def test02(self):
     """Testing `iter()` (w/ start, stop, step)"""
     a = np.ones((3,), dtype="i4")
     b = ca.ones((1000,3), dtype="i4")
     #print "b->", `b`
     for r in b.iter(15, 100, 3):
         assert_array_equal(a, r, "Arrays are not equal")
Esempio n. 9
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 def test01(self):
     """Testing `resize()` (enlarge)"""
     a = np.ones((4,3), dtype="i4")
     b = ca.ones((3,3), dtype="i4", rootdir=self.rootdir)
     b.resize(4)
     #print "b->", `b`
     assert_array_equal(a, b, "Arrays are not equal")
Esempio n. 10
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 def test01(self):
     """Testing `resize()` (enlarge)"""
     a = np.ones((4, 3), dtype="i4")
     b = ca.ones((3, 3), dtype="i4", rootdir=self.rootdir)
     b.resize(4)
     #print "b->", `b`
     assert_array_equal(a, b, "Arrays are not equal")
Esempio n. 11
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 def test00(self):
     """Testing compound types (creation)"""
     a = np.ones((300, 4), dtype=self.dtype)
     b = ca.ones((300, 4), dtype=self.dtype)
     #print "b.dtype-->", b.dtype
     #print "b->", `b`
     self.assert_(a.dtype == b.dtype.base)
     assert_array_equal(a, b[:], "Arrays are not equal")
Esempio n. 12
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 def test02(self):
     """Testing `ones` constructor"""
     a = np.ones((2, 2), dtype='(4,)i4')
     b = ca.ones((2, 2), dtype='(4,)i4', rootdir=self.rootdir)
     if self.open:
         b = ca.open(rootdir=self.rootdir)
     #print "b->", `b`
     assert_array_equal(a, b, "Arrays are not equal")
Esempio n. 13
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 def test02(self):
     """Testing unicode types (iter)"""
     a = np.ones((3, ), dtype="U40")
     b = ca.ones((1000, 3), dtype="U40")
     #print "b->", `b`
     for r in b.iter():
         #print "r-->", r
         assert_array_equal(a, r, "Arrays are not equal")
Esempio n. 14
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 def test02(self):
     """Testing `ones` constructor"""
     a = np.ones((2,2), dtype='(4,)i4')
     b = ca.ones((2,2), dtype='(4,)i4', rootdir=self.rootdir)
     if self.open:
         b = ca.open(rootdir=self.rootdir)
     #print "b->", `b`
     assert_array_equal(a, b, "Arrays are not equal")
Esempio n. 15
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 def test00(self):
     """Testing compound types (creation)"""
     a = np.ones((300,4), dtype=self.dtype)
     b = ca.ones((300,4), dtype=self.dtype)
     #print "b.dtype-->", b.dtype
     #print "b->", `b`
     self.assert_(a.dtype == b.dtype.base)
     assert_array_equal(a, b[:], "Arrays are not equal")
Esempio n. 16
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 def test02(self):
     """Testing unicode types (iter)"""
     a = np.ones((3,), dtype="U40")
     b = ca.ones((1000,3), dtype="U40")
     #print "b->", `b`
     for r in b.iter():
         #print "r-->", r
         assert_array_equal(a, r, "Arrays are not equal")
Esempio n. 17
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 def test03(self):
     """Testing `reshape()` (0-dim)"""
     a = np.ones((0,4), dtype="i4")
     b = ca.ones(0, dtype="i4").reshape((0,4))
     #print "b->", `b`
     # The next does not work well for carrays with shape (0,)
     #assert_array_equal(a, b, "Arrays are not equal")
     self.assert_(a.dtype.base == b.dtype.base)
     self.assert_(a.shape == b.shape+b.dtype.shape)
Esempio n. 18
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 def test03(self):
     """Testing `reshape()` (0-dim)"""
     a = np.ones((0, 4), dtype="i4")
     b = ca.ones(0, dtype="i4").reshape((0, 4))
     #print "b->", `b`
     # The next does not work well for carrays with shape (0,)
     #assert_array_equal(a, b, "Arrays are not equal")
     self.assert_(a.dtype.base == b.dtype.base)
     self.assert_(a.shape == b.shape + b.dtype.shape)
Esempio n. 19
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 def test00a(self):
     """Testing wheretrue() in combination with a list constructor"""
     a = ca.zeros(self.N, dtype="bool")
     a[30:40] = ca.ones(10, dtype="bool")
     alist = list(a)
     blist1 = [r for r in a.wheretrue()]
     self.assert_(blist1 == range(30,40))
     alist2 = list(a)
     self.assert_(alist == alist2, "wheretrue() not working correctly")
Esempio n. 20
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 def test00b(self):
     """Testing `resize()` (trim to zero)"""
     a = np.ones((0,3), dtype="i4")
     b = ca.ones((3,3), dtype="i4", rootdir=self.rootdir)
     b.resize(0)
     #print "b->", `b`
     # The next does not work well for carrays with shape (0,)
     #assert_array_equal(a, b, "Arrays are not equal")
     self.assert_("a.dtype.base == b.dtype.base")
     self.assert_("a.shape == b.shape+b.dtype.shape")
Esempio n. 21
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 def test00b(self):
     """Testing `resize()` (trim to zero)"""
     a = np.ones((0, 3), dtype="i4")
     b = ca.ones((3, 3), dtype="i4", rootdir=self.rootdir)
     b.resize(0)
     #print "b->", `b`
     # The next does not work well for carrays with shape (0,)
     #assert_array_equal(a, b, "Arrays are not equal")
     self.assert_("a.dtype.base == b.dtype.base")
     self.assert_("a.shape == b.shape+b.dtype.shape")
Esempio n. 22
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 def test01a(self):
     """Testing where() in combination with a list constructor"""
     a = ca.zeros(self.N, dtype="bool")
     a[30:40] = ca.ones(10, dtype="bool")
     b = ca.arange(self.N, dtype="f4")
     blist = list(b)
     blist1 = [r for r in b.where(a)]
     self.assert_(blist1 == range(30,40))
     blist2 = list(b)
     self.assert_(blist == blist2, "where() not working correctly")
Esempio n. 23
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 def test01b(self):
     """Testing where() with a multidimensional array"""
     a = ca.zeros((self.N, 10), dtype="bool")
     a[30:40] = ca.ones(10, dtype="bool")
     b = ca.arange(self.N*10, dtype="f4").reshape((self.N, 10))
     self.assertRaises(NotImplementedError, b.where, a)
Esempio n. 24
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 def test02b(self):
     """Testing ones() constructor, with a `dtype`."""
     a = np.ones(self.N, dtype='i4')
     ac = ca.ones(self.N, dtype='i4', rootdir=self.rootdir)
     self.assert_(a.dtype == ac.dtype)
     self.assert_(np.all(a == ac[:]))
Esempio n. 25
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 def test00c(self):
     """Testing `reshape()` (unidim -> ndim, -1 in newshape (II))"""
     a = np.ones((3,4), dtype="i4")
     b = ca.ones(12, dtype="i4").reshape((3,-1))
     #print "b->", `b`
     assert_array_equal(a, b, "Arrays are not equal")
Esempio n. 26
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 def test02a(self):
     """Testing ones() constructor."""
     a = np.ones(self.N)
     ac = ca.ones(self.N, rootdir=self.rootdir)
     self.assert_(a.dtype == ac.dtype)
     self.assert_(np.all(a == ac[:]))
Esempio n. 27
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 def test02a(self):
     """Testing ones() constructor."""
     a = np.ones(self.N)
     ac = ca.ones(self.N, rootdir=self.rootdir)
     self.assert_(a.dtype == ac.dtype)
     self.assert_(np.all(a == ac[:]))
Esempio n. 28
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 def test02b(self):
     """Testing ones() constructor, with a `dtype`."""
     a = np.ones(self.N, dtype='i4')
     ac = ca.ones(self.N, dtype='i4', rootdir=self.rootdir)
     self.assert_(a.dtype == ac.dtype)
     self.assert_(np.all(a == ac[:]))
Esempio n. 29
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 def test00b(self):
     """Testing wheretrue() with a multidimensional array"""
     a = ca.zeros((self.N, 10), dtype="bool")
     a[30:40] = ca.ones(10, dtype="bool")
     self.assertRaises(NotImplementedError, a.wheretrue)
Esempio n. 30
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 def test00c(self):
     """Testing `reshape()` (unidim -> ndim, -1 in newshape (II))"""
     a = np.ones((3, 4), dtype="i4")
     b = ca.ones(12, dtype="i4").reshape((3, -1))
     #print "b->", `b`
     assert_array_equal(a, b, "Arrays are not equal")