def drag_and_drop_by_offset(self, source, xoffset, yoffset):
        self.click_and_hold(source)
        self.move_by_offset(xoffset, yoffset)
        self.release()
        return self
Compute and return eigen{values,vectors} of X's covariance matrix.
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/selenium/webdriver/common/action_chains.py/ActionChains.drag_and_drop_by_offset--crossover with--dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/models/pca.py/_PCABase._cov_eigen