Changeset e81c045 for python/aubio

Timestamp:

Sep 5, 2006, 6:32:20 PM (18 years ago)

Author:

Paul Brossier <piem@altern.org>

Branches:

feature/autosink, feature/cnn, feature/cnn_org, feature/constantq, feature/crepe, feature/crepe_org, feature/pitchshift, feature/pydocstrings, feature/timestretch, fix/ffmpeg5, master, pitchshift, sampler, timestretch, yinfft+

Children:

c2f3981

Parents:

dbd19ea

Message:

fix gnuplot_create without options, add envelope draft, remove useless list
fix gnuplot_create without options, add envelope draft, remove useless list

File:

• python/aubio/gnuplot.py (modified) (6 diffs)

python/aubio/gnuplot.py

@@ -44 +44 @@
 
 def plot_audio(filenames, g, options):
-        d = []
         todraw = len(filenames)
         xorig = 0.
@@ -58 +57 @@
                                 g.xlabel('Time (s)')
                         g.ylabel('Amplitude')
-                d.append(make_audio_plot(time,data))
+                curplot = make_audio_plot(time,data)
                 g('set size %f,%f;' % (options.xsize*xratio,options.ysize) )
                 g('set origin %f,0.;' % (xorig) )
@@ -64 +63 @@
                         set yrange [-1.:1.]; \
                         set xrange [0:%f]' % time[-1]) 
-                g.plot(d.pop(0))
+                g.plot(curplot)
                 xorig += options.xsize*xratio 
         g('unset multiplot;')
@@ -159 +158 @@
   return Gnuplot.Data(x,y,with='lines')
 
+def make_audio_envelope(time,data,maxpoints=10000):
+  """ create gnuplot plot from an audio file """
+  import numarray
+  import Gnuplot, Gnuplot.funcutils
+  bufsize = 500
+  x = [i.mean() for i in numarray.array(time).resize(len(time)/bufsize,bufsize)] 
+  y = [i.mean() for i in numarray.array(data).resize(len(time)/bufsize,bufsize)] 
+  x,y = downsample_audio(x,y,maxpoints=maxpoints)
+  return Gnuplot.Data(x,y,with='lines')
+
 def gnuplot_addargs(parser):
   """ add common gnuplot argument to OptParser object """
@@ -191 +200 @@
 def gnuplot_create(outplot='',extension='', options=None):
   import Gnuplot
-  g = Gnuplot.Gnuplot(debug=options.debug, persist=options.persist)
+  if options:
+    g = Gnuplot.Gnuplot(debug=options.debug, persist=options.persist)
+  else:
+    g = Gnuplot.Gnuplot(persist=1)
   if not extension or not outplot: return g
   if   extension == 'ps':  ext, extension = '.ps' , 'postscript'
@@ -200 +212 @@
   else: exit("ERR: unknown plot extension")
   g('set terminal %s' % extension)
-  if options.lmargin: g('set lmargin %i' % options.lmargin)
-  if options.rmargin: g('set rmargin %i' % options.rmargin)
-  if options.bmargin: g('set bmargin %i' % options.bmargin)
-  if options.tmargin: g('set tmargin %i' % options.tmargin)
+  if options and options.lmargin: g('set lmargin %i' % options.lmargin)
+  if options and options.rmargin: g('set rmargin %i' % options.rmargin)
+  if options and options.bmargin: g('set bmargin %i' % options.bmargin)
+  if options and options.tmargin: g('set tmargin %i' % options.tmargin)
   if outplot != "stdout":
     g('set output \'%s%s\'' % (outplot,ext))
-  g('set size %f,%f' % (options.xsize, options.ysize))
+  if options: g('set size %f,%f' % (options.xsize, options.ysize))
   return g