from java.lang import System
t0= System.currentTimeMillis()
waveform= zeros(50000,512)
waveform= putProperty( waveform,QDataSet.DEPEND_0,timegen('2015-01-01T00:00','1s',50000) )
waveform= putProperty( waveform,QDataSet.DEPEND_1, putProperty( indgen(512)/512, QDataSet.UNITS, Units.seconds  ) )

tcreateWaveform= ( System.currentTimeMillis() - t0 )

t0= System.currentTimeMillis()
fftw= fftPower( waveform, 512, 2, 'Hanning', monitor )
tfftPower= ( System.currentTimeMillis() - t0 ) 

t0= System.currentTimeMillis()
plot( fftw )
tplot= ( System.currentTimeMillis() - t0 ) 

f= open( '/home/jbf/ct/hudson/stats/test037_fftBenchmark.txt', 'a' )
f.write( '%s %f %f %f\n' % ( TimeUtil.now(), tcreateWaveform, tfftPower, tplot ) )
f.close()
writeToPng('test037_fftBenchmark.png')