Testing post transform pixel shift for PyAbel onion_bordas

test-onion_bordas.py

import abel
import matplotlib.pyplot as plt

im = abel.tools.analytical.SampleImage(1001, 'Ominus').image

proj = abel.Transform(im, method='basex', verbose=False,
                      direction='forward').transform

bas = abel.Transform(proj, method='basex', verbose=False,
                     angular_integration=True)

onb = abel.Transform(proj, method='onion_bordas',
                     angular_integration=True)
 
ims = abel.tools.vmi.angular_integration(im)

plt.plot(*ims, '--', label='Ominus')
plt.plot(*bas.angular_integration, lw=1, label='basex')
plt.plot(*onb.angular_integration, lw=1, label='onion_bordas')
plt.legend()
plt.axis(xmin=330,xmax=350)
plt.savefig('onion-y.png', dpi=75, bb_inches='tight')
plt.show()