asdf

from nilearn.plotting.img_plotting import plot_img
import pylab as plt
import nibabel as nb
import numpy as np

nii = nb.load("/home/raid3/gorgolewski/Downloads/fmap_field_masked.nii.gz")

print nii.get_affine()

scaling_affine = np.array([[-3, 0, 0, 0],
                           [0, 3, 0, 0],
                           [0, 0, 3, 0],
                           [0, 0, 0, 1]])
new_nii = nb.Nifti1Image(nii.get_data(), scaling_affine)
plot_img(new_nii)

plt.show()