def test_logn_trans():
log3_trans = log_trans(3)
_test_trans(log3_trans, arr)
log4_trans = log_trans(4, domain=(0.1, 100),
breaks=mpl_breaks(),
minor_breaks=minor_breaks())
_test_trans(log4_trans, arr)
def test_mpl_breaks():
x = np.arange(100)
limits = min(x), max(x)
for nbins in (5, 7, 10, 13, 31):
breaks = mpl_breaks(nbins=nbins)
assert len(breaks(limits)) <= nbins + 1
limits = float('-inf'), float('inf')
breaks = mpl_breaks(n=5)
assert len(breaks(limits)) == 0
# Zero range discrete
limits = [1, 1]
assert len(breaks(limits)) == 1
assert breaks(limits)[0] == limits[1]
# Zero range continuous
limits = [np.pi, np.pi]
assert len(breaks(limits)) == 1
assert breaks(limits)[0] == limits[1]
def test_mpl_breaks():
x = np.arange(100)
limits = min(x), max(x)
for nbins in (5, 7, 10, 13, 31):
breaks = mpl_breaks(nbins=nbins)
assert len(breaks(limits)) <= nbins+1
limits = float('-inf'), float('inf')
breaks = mpl_breaks(n=5)
assert len(breaks(limits)) == 0
# Zero range discrete
limits = [1, 1]
assert len(breaks(limits)) == 1
assert breaks(limits)[0] == limits[1]
# Zero range continuous
limits = [np.pi, np.pi]
assert len(breaks(limits)) == 1
assert breaks(limits)[0] == limits[1]