Source code for diaGrabber.source.methods.merge
# -*- coding: utf-8 *-*
'''
This module includes all methods to merge values from
type :class:`diaGrabber.source._dimension.mergeDimension`.
"Merge" means in this case to handle an incoming new value at a place in
the target where other values exists allready.
Depending on the chosen target-class :mod:`diaGrabber.target` its also
possible that incomming values have an intensity < 1 because the orig.
values were splitted.
'''
from numpy import isnan as _isnan
[docs]class last:
'''Take every last incomming value. Do not merge with old values.
This is the standard-procedure.'''
def _get(self, new_value,old_value,anz_values,intensity):
return new_value, True
[docs]class mean:
'''Caluculate and take the mean of all incomming values.'''
def _get(self,new_value,old_value,anz_values,intensity):
if _isnan(old_value):
return new_value, True
else:
##middle the basis_clustered to the new basis values
##dependent to the size of the cluster (v = old + (new-old)/size_cluser))
value = old_value + intensity * ( (new_value - old_value) / (anz_values+1) )
#value in matrix, is_new_value
return value,True
[docs]class max:
'''Take only the maximum of all incomming values.'''
def _get(self, new_value,old_value,anz_values,intensity):
if _isnan(old_value):
return new_value, True
else:
new_value = old_value + intensity * (new_value - old_value)
if new_value > old_value:
return new_value, True
else:
return old_value, False
[docs]class min:
'''Take only the minimum of all incomming values.'''
def _get(self, new_value,old_value,anz_values,intensity):
if _isnan(old_value):
return new_value, True
else:
new_value = old_value + intensity * (new_value - old_value)
if new_value < old_value:
return new_value, True
else:
return old_value, False
[docs]class sum:
'''Caluculate and take the sum of all incomming values.'''
def _get(self, new_value,old_value,anz_values,intensity):
if _isnan(old_value):
return new_value, True
else:
new_value = old_value + intensity * new_value
return new_value, True
