# this shows the histogram function, and also times each operation.  
# "print" commands are output to the script console.

from java.lang.System import currentTimeMillis

t0= currentTimeMillis()
data= randn(3000000)
print 'make random dataset: %d ms' % ( currentTimeMillis() - t0 )

#x= data[1:] - data[:-1]
x= diff(data)
print 'do differences: %d ms' % ( currentTimeMillis() - t0 )

result= histogram(x,-5,5,0.1 )
print 'finished histogram: %d ms' % ( currentTimeMillis() - t0 )