diff dml-cla/python/key_tonic_hist.py @ 0:718306e29690 tip

commiting public release

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dml-cla/python/key_tonic_hist.py	Tue Feb 09 21:05:06 2016 +0100
@@ -0,0 +1,48 @@
+# Part of DML (Digital Music Laboratory)
+# Copyright 2014-2015 Samer Abdallah, University College London
+ 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+# -*- coding: utf-8 -*-
+__author__="samer"
+
+from rdfutils import *
+from n3Parser import *
+from pitchutils import *
+from aggregate import *
+from csvutils import csv_map_rows
+from warnings import warn
+
+def tonic_from_n3(filename):
+    graph=get_rdf_graph_from_n3(filename)
+    max_time = 0
+    tonic = None
+    for ev, time in graph.subjects_objects(ev_ns.time):
+        t = parse_xsd_duration(graph.value(time,tl_ns.at))
+        if t>max_time: tonic = graph.value(ev,af_ns.feature)
+    return tonic-1
+
+def tonic_from_csv(filename):
+    # format: time, pitch_class_number, pitch_class_name
+    return int(csv_map_rows(filename,3,lambda row:row[1])[-1])-1
+
+
+def aggregate(inputs):
+    parser_table = { 'n3':tonic_from_n3, 
+                     'csv':tonic_from_csv }
+    hist = 12*[0]
+    def accum(f): hist[decode_tagged(parser_table,f)] += 1
+    stats=for_each(inputs,accum)
+    return { 'result': discrete_hist(pitch_class_names,hist), 'stats':stats }