gh_mirror/jhunkeler/stwcs_hcf.git/lib/stwcs, branch pre-astropy

port changes from astropy.wcs - naxis1/2 are private now.

2014-04-24T19:28:34+00:00

git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stwcs/trunk@31128 fe389314-cf27-0410-b35b-8c050e845b92

Minor simplification and improvement to the final check for diverging/invalid coordinates compared to r31125. Improvements/corrections in code formatting, comments, and help.

2014-04-24T01:13:42+00:00

git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stwcs/trunk@31126 fe389314-cf27-0410-b35b-8c050e845b92

This revision improves upon changes made to the `all_sky2pix` in r31122 and r31123 that address issues described in ticket #1121 and ticket #1122, by implementing a more robust handling of the divergent solutions. The new parameter `detect_divergence` will allow to detect divergent solutions at each iteration. Now, even if `adaptive` is set to `False`, assuming `detect_divergence` is `True`, when divergent solutions are detected `all_sky2pix` will automatically switch from the highly efficient fully vectorized algorithm to a less efficient (~30%) (still vectorized) but adaptive algorithm.

2014-04-23T07:32:20+00:00

Updated comments and examples to `all_sky2pix` to reflect the changes.



git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stwcs/trunk@31125 fe389314-cf27-0410-b35b-8c050e845b92

1. reverted to 1e-4 default accuracy (compared to r31122 );

2014-04-21T19:26:54+00:00

2. improved NoConvergence error class and its documentation;
3. implemented detection of a divergent numerical method (previously this would have been impossible to distinguish why a method does not converge: was it due to too low maxiter (and or accuracy) setting or it was due to inherent divergence of the method for given deometric distortions.


git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stwcs/trunk@31123 fe389314-cf27-0410-b35b-8c050e845b92

1. Modified all_sky2pix to return either a list of 1D vectors or a 2D array depending on the format of the input data to bring all_sky2pix to behave similarly to other similar functions: wcs_pix2sky, wcs_sky2pix, all_pix2sky.

2014-04-18T01:34:29+00:00

2. Major improvements (10x for non-vetorized use and ~400x for vectorized use) in performance of the function.


git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stwcs/trunk@31122 fe389314-cf27-0410-b35b-8c050e845b92

Support has been added for optional TDD Alpha term to be read in from IDCTAB primary header for new (non-Jay Anderson) TDD correction.

2014-04-02T20:03:23+00:00

git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stwcs/trunk@30795 fe389314-cf27-0410-b35b-8c050e845b92

Initial check-in to add support for new ACS TDD correction described in Ticket #1108

2014-02-26T20:32:22+00:00

git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stwcs/trunk@29972 fe389314-cf27-0410-b35b-8c050e845b92

STWCS.updatewcs update to insure that NEXTEND keyword (if already present in primary header) remains consistent with full size of FITS file after updates.

2013-12-30T17:06:12+00:00

git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stwcs/trunk@28704 fe389314-cf27-0410-b35b-8c050e845b92

STWCS update to insure that NEXTEND keyword (if already present in primary header) remains consistent with full size of FITS file after updates.

2013-12-30T17:01:35+00:00

git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stwcs/trunk@28702 fe389314-cf27-0410-b35b-8c050e845b92

remove unused variables

2013-12-03T20:43:39+00:00

git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stwcs/trunk@27708 fe389314-cf27-0410-b35b-8c050e845b92