NoConvergence¶
-
exception
astropy.wcs.
NoConvergence
(*args, **kwargs)[source] [edit on github]¶ An error class used to report non-convergence and/or divergence of numerical methods. It is used to report errors in the iterative solution used by the
all_world2pix()
.Attributes
best_solution ( numpy.ndarray
) Best solution achieved by the numerical method.accuracy ( numpy.ndarray
) Accuracy of thebest_solution
.niter ( int
) Number of iterations performed by the numerical method to computebest_solution
.divergent (None, numpy.ndarray
) Indices of the points inbest_solution
array for which the solution appears to be divergent. If the solution does not diverge,divergent
will be set toNone
.slow_conv (None, numpy.ndarray
) Indices of the solutions inbest_solution
array for which the solution failed to converge within the specified maximum number of iterations. If there are no non-converging solutions (i.e., if the required accuracy has been achieved for all input data points) thenslow_conv
will be set toNone
.