(PECL imagick 2, PECL imagick 3)
Imagick::setSizeOffset — Sets the size and offset of the Imagick object
Sets the size and offset of the Imagick object. Set it before you read a raw image format such as RGB, GRAY, or CMYK. This method is available if Imagick has been compiled against ImageMagick version 6.2.9 or newer.
columnsThe width in pixels.
rowsThe height in pixels.
offsetThe image offset.
Returns true on success.