-(void)clear
{
    float              empty[_changingHistorySize];
    // Figure out better way to do this
    for(int i = 0; i < _changingHistorySize; i++ )
    {
        empty[i] = 0.0f;
    }
    for(int i = 0; i < _scrollHistoryLength; i++)
    {
        _scrollHistory[i] = 0.0f;
    }
    _scrollHistoryIndex = 0;

    [self setSampleData:_scrollHistory
                 length:(!_setMaxLength?kEZAudioPlotMaxHistoryBufferLength:_scrollHistoryLength)];
}