def test_build_header_database(self): """ Should connect to a database for looking up header attributes. """ fig = plt.figure() ax = fig.add_subplot(111) # connecting to a database in memory should not create a file splt = SEGYPlotManager(ax, self.segy, trace_header_database=':memory:') self.assertFalse(os.path.isfile(':memory:')) # connecting to a filename should create a file if it does not exist filename = 'temp.test_build_header_database.sqlite' if os.path.isfile(filename): os.remove(filename) # should not create database if no pickdb is given splt = SEGYPlotManager(ax, self.segy, trace_header_database=filename) self.assertFalse(os.path.isfile(filename)) # should create database if pickdb is given splt = SEGYPlotManager(ax, self.segy, pickdb=self.pickdb, trace_header_database=filename) self.assertTrue(os.path.isfile(filename)) # clean up os.remove(filename) # create plot manager in memory with pickdb splt = SEGYPlotManager(ax, self.segy, pickdb=self.pickdb) # should be able to get primary fields from the picks trace table pick_keys = splt.pickdb._get_primary_fields(splt.pickdb.TRACE_TABLE) self.assertTrue(len(pick_keys) > 0) # pick primary keys should be in the alias dictionary # or be a header attribute header = self.segy.traces[0].header for k in pick_keys: self.assertTrue(k in splt.SEGY_HEADER_ALIASES \ or hasattr(header, k)) # should add header fields for primary keys in the pick database sql = 'SELECT * FROM %s' %splt.sdb.TRACE_TABLE data = splt.sdb.execute(sql) for key in pick_keys: _key = splt._get_header_alias(key) for i,row in enumerate(data): segy_value = splt.get_header_value( self.segy.traces[i].header, key, convert_units=False) db_value = row[_key] self.assertEqual(segy_value, db_value)
def test_get_abscissa(self): """ Should return a list of abcissa values. """ fig = plt.figure() ax = fig.add_subplot(111) splt = SEGYPlotManager(ax, self.segy, pickdb=self.pickdb) # just get abcissa for a subset of the traces idx = [0, 100, 103, 104, 500, 550] values = [] for i in idx: ensemble = self.segy.traces[i].header.ensemble_number trace = \ self.segy.traces[i].header.trace_number_within_the_ensemble values.append((ensemble, trace)) # should return a list of values for plot x-axis x = splt._get_abscissa(['ensemble', 'trace'], values) _key = splt._get_header_alias(splt.ABSCISSA_KEY) for j,i in enumerate(idx): tr = self.segy.traces[i] self.assertEqual(tr.header.__getattribute__(_key), x[j])