# this demonstrates how scripts can use the TimeSeriesBrowse capability.
# Any script with getParam('timerange') has this capability, and it will
# be added when the jython data source is loaded.
#
# This returns sin( hours since 2000 )

p1= getParam( 'timerange', '2001-01-01', 'timerange to load' )
p2= getParam( 'shiftHour', 0, 'shift signal this many hours' )

tr= DatumRangeUtil.parseTimeRange(p1)

x= linspace( tr.min().doubleValue(Units.t2000), tr.max().doubleValue(Units.t2000), 1000 )
x.putProperty(QDataSet.UNITS,Units.t2000)

t0= Units.t2000.createDatum(0)

# work around bugs existing in v2011a_2. https://sourceforge.net/tracker/?func=detail&aid=3466875&group_id=199733&atid=970682
dd= (x-t0)/'3600 s' 
dd.putProperty( QDataSet.UNITS, None )

result= link( x,  sin( dd - p2 ) )