code: public ComplexImg fill(int channel, double value) {
  		delegate.fill(channel, value);
  		if(synchronizePowerSpectrum && (channel == CHANNEL_REAL || channel == CHANNEL_IMAG)){
  			recomputePowerChannel();
  		}
  		return this;
  	}
docs: Fills the specified channel with the specified value.
  All values of this channel will be same afterwards.
  <br>
  If {@link #isSynchronizePowerSpectrum()} is true, then this will also
  call {@link #recomputePowerChannel()}.
  
  @param channel to fill
  @param value to fill with
  @return this