ios - EZAudio Plot Mirror Not Consistant -

i implemented ezaudioplotgl in 4 different view controllers. @ times top part of showing , though shouldmirror set yes @ times. suggestions ?

i have used "ezaudioplot.h" class rather "ezaudioplotgl.h". resolves issue of inconsistent wave form , works same "ezaudioplotgl.h"

and implemented clear method in "ezaudioplot.m" class because not have implementation or clear method.

 -(void)clear {     float              empty[_changinghistorysize];     // figure out better way     for(int = 0; < _changinghistorysize; i++ )     {         empty[i] = 0.0f;     }     for(int = 0; < _scrollhistorylength; i++)     {         _scrollhistory[i] = 0.0f;     }     _scrollhistoryindex = 0;      [self setsampledata:_scrollhistory                  length:(!_setmaxlength?kezaudioplotmaxhistorybufferlength:_scrollhistorylength)]; }