helikite.processing.post.crosscorrelation
=========================================

.. py:module:: helikite.processing.post.crosscorrelation


Functions
---------

.. autoapisummary::

   helikite.processing.post.crosscorrelation.crosscorr
   helikite.processing.post.crosscorrelation.df_derived_by_shift
   helikite.processing.post.crosscorrelation.df_findtimelag
   helikite.processing.post.crosscorrelation.df_lagshift
   helikite.processing.post.crosscorrelation.matchpress
   helikite.processing.post.crosscorrelation.presdetrend


Module Contents
---------------

.. py:function:: crosscorr(datax, datay, lag=10)

   Lag-N cross correlation.
   :param lag:
   :type lag: int, default 0
   :param datax:
   :type datax: pandas.Series objects of equal length
   :param datay:
   :type datay: pandas.Series objects of equal length

   :returns: **crosscorr**
   :rtype: float


.. py:function:: df_derived_by_shift(df_init, lag=0, NON_DER=[])

.. py:function:: df_findtimelag(df, range_list, instname='')

.. py:function:: df_lagshift(df_instrument, df_reference, shift_quantity, instrument_name='')

   Shifts the instrument's dataframe by the given quantity.
   First, match the instrument with the index of the reference instrument.


.. py:function:: matchpress(dfpressure, refpresFC, takeofftimeFL, walktime)

.. py:function:: presdetrend(dfpressure, takeofftimeFL, landingtimeFL)

   detrend instrument pressure measurements