(PECL imagick 2.0.0)
ImagickPixelIterator::newPixelRegionIterator — Returns a new pixel iterator
$wand
   , int $x
   , int $y
   , int $columns
   , int $rows
   )This function is currently not documented; only its argument list is available.
Returns a new pixel iterator.
wand
x
y
columns
rows
Returns a new ImagickPixelIterator on success; on failure, throws ImagickPixelIteratorException.