=== r2eff ===
<source lang="python">
import osOUT = os.path.join(os.getcwd(),'final')if not os.path.isdir(OUT): os.makedirs(OUT)grace.write(x_data_type='res_num', y_data_type='r2eff', spin_id=None, plot_data='value', file='r2eff.agr', dir='final'OUT, force=True, norm=False)
</source>