signal 1.4.6

findpeaks.m around line 295

width = sqrt (abs(1 / pp(1))) + xm;
if ( (width > maxW || width < minW) || ...
...
extra.roots(struct_count,1:2)= xm + [-width width]/2;
-veratim-

This raises two problems:
1.) The check for MaxPeakWidth and MinPeakWidth are position dependent
(a peak with higher X-position would excess the MaxPeakWidth boundary although it has the same width as a previous one)
2.) The returned roots are not symmetrical to the position of the peak because xm is also added to width.

The comming patch fixed both and adds a test