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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | #!/usr/bin/python2.4
#
# Copyright 2008 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import math
from graphy.backends import google_chart_api
from graphy import bar_chart
left_channel = []
right_channel = []
for i in xrange(0, 360, 3):
left_channel.append(100.0 * math.sin(math.radians(i)))
right_channel.append(100.0 * math.sin(math.radians(i + 30)))
chart = google_chart_api.BarChart()
chart.AddBars(left_channel, color='0000ff')
chart.AddBars(right_channel, color='ff8040')
chart.display.enhanced_encoding = True
print '<html><head><title>Audio Signal</title></head><body>'
print '<h1>Separate</h1>'
chart.stacked = False
chart.style = bar_chart.BarChartStyle(None, 0, 1)
print chart.display.Img(640, 120)
print '<h1>Joined</h1>'
chart.stacked = True
chart.style = bar_chart.BarChartStyle(None, 1)
print chart.display.Img(640, 120)
print '</body></html>'
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