def test_fromhdf5sorted():
# set up a new hdf5 table to work with
h5file = openFile("test1.h5", mode="w", title="Test file")
h5file.createGroup('/', 'testgroup', 'Test Group')
class FooBar(IsDescription):
foo = Int32Col(pos=0)
bar = StringCol(6, pos=2)
h5table = h5file.createTable('/testgroup', 'testtable', FooBar, 'Test Table')
# load some data into the table
table1 = (('foo', 'bar'),
(3, 'asdfgh'),
(2, 'qwerty'),
(1, 'zxcvbn'))
for row in table1[1:]:
for i, f in enumerate(table1[0]):
h5table.row[f] = row[i]
h5table.row.append()
h5table.cols.foo.createCSIndex()
h5file.flush()
# verify we can get the data back out
table2 = fromhdf5sorted(h5table, sortby='foo')
ieq(sort(table1, 'foo'), table2)
ieq(sort(table1, 'foo'), table2)
# clean up
h5file.close()
def collapsedintervals(tbl, start='start', stop='stop', facet=None):
"""
Utility function to collapse intervals in a table.
If no facet key is given, returns an iterator over `(start, stop)` tuples.
If facet key is given, returns an iterator over `(key, start, stop)` tuples.
.. versionadded:: 0.5.5
"""
if facet is None:
tbl = sort(tbl, key=start)
for iv in _collapse(values(tbl, (start, stop))):
yield iv
else:
tbl = sort(tbl, key=(facet, start))
for k, g in rowgroupby(tbl, key=facet, value=(start, stop)):
for iv in _collapse(g):
yield (k,) + iv
def collapsedintervals(tbl, start='start', stop='stop', facet=None):
"""
Utility function to collapse intervals in a table.
If no facet key is given, returns an iterator over `(start, stop)` tuples.
If facet key is given, returns an iterator over `(key, start, stop)` tuples.
.. versionadded:: 0.5.5
"""
if facet is None:
tbl = sort(tbl, key=start)
for iv in _collapse(values(tbl, (start, stop))):
yield iv
else:
tbl = sort(tbl, key=(facet, start))
for k, g in rowgroupby(tbl, key=facet, value=(start, stop)):
for iv in _collapse(g):
yield (k, ) + iv