Release notes
Version 2.3 (being developed)
- WCSLIB:
- Module wcs:
- added option to create a ‘minimal’ Projection object when a full
object cannot be created due to errors in the FITS header.
- Module maputils:
- added Astropy support.
- various improvements and extensions.
- Module mplutil:
- added sunbow color maps.
- in class AxesCallback use weak references to Axes objects.
- Bug fixes.
Version 2.2 (Apr 19, 2012)
- Class maputils.FITSimage:
- Method header2classic() returns a tuple with three elements.
The last one used to be a boolean but it is now a list with
FITS keywords that have been changed.
- Class rulers.Ruler:
- now supports rulers specified by a start position, a size and an
angle w.r.t. the North.
- new method set_title() for labeling a ruler.
- Module mplutil:
- new class CanvasCallback.
- work-around to add support for resize events to matplotlib’s
Qt4Agg backend.
- work-around for matplotlib’s (>=1.1.0) changed callback registry.
- WCSLIB:
- changed to version 4.13.4
- use WCSLIB’s new error diagnostics system
- New module kmpfit:
- provides new class Fitter for solving least-squares problem using
the Levenberg-Marquardt technique. It is based on the implementation
in C of Craig Markwardt’s MPFIT routines.
- Documentation:
Version 2.1 (Feb 14, 2011)
- Class wcs.Projection:
- added attribute category
- fixed ZPN projection related problem in method mixed()
- minimal FITS headers are now accepted
- added support for grid coordinates, i.e., CRPIX-relative pixel
coordinates. Methods pixel2grid() and grid2pixel().
- added method str2pos() for converting positions represented as strings
to world- and pixel coordinates.
- Module maputils:
- added new class Skypolygon for plotting shapes like ellipses,
rectangles and regular polygons. For these shapes
angles and distances along a great circle are preserved.
This class can be used for example to draw footprints on all-sky
plots or a beam to show the resolution of an instrument.
- improved position information in toolbar. Message format can be
changed by user/programmer.
- support for RGB images. RGB values are displayed in message toolbar.
- class FITSimage: improved versions of header2classic() and
reproject_to() methods;
new slice2world() method prints information about
slice positions (annotate 2d maps from a 3d data cube).
- catch error if event.key is None for Caps Lock keys
- get rid of ‘new’ keyword in histogram
- blur defaults improved
- str_header() method was unable to print dictionary (external) headers.
Fixed.
- Module mplutil:
- work-around for special keys which are defined in matplotlib’s GTKAgg
backend but ‘missing’ from the Qt4Agg backend.
The following keys are made available: ‘pageup’, ‘pagedown’,
‘left’, ‘right’, ‘up’, ‘down’, ‘home’, ‘end’.
- Module positions:
- units 1/... and /... also recognized. Can be used for spectral
translations that transform to e.g. AWAV.
- introduced ‘?’ character as wildcard for units.
- introduced case insensitive minimal match for ‘UNITS’ as a replacement
for header units.
- all column, row and line numbers now start with 1.
- Module shapes:
- messages for toolbar improved.
- changed conversion routine to support shapes on maps with only one
spatial axis (e.g. position-velocity maps).
- GUI improved.
- improved writing shape data to file.
- catch error if event.key is None for Caps Lock keys
- improved moving objects (from within any point within the ellipse)
- improved rotation ellipse
- improved sampling on ellipse
- added rotation to rectangles
- changed writing position to terminal with left mouse button to combination
of left mouse button and shift key. This prevents interference with
module shapes where one drags a shape with the left mouse button.
- Module wcsgrat:
- fixed bug with precision in seconds.
- use positions module to evaluate expressions for startx and starty
parameter in Graticule class.
- use positions module to evaluate expressions for deltax and deltay
parameter in Graticule class.
- introduced a syntax to set labels in LaTeX in exponential format.
- sexagesimal labeling with h, m, s characters or with superscripts with
Boolean parameter texsexa.
- allow Graticule parameter unitsx and unitsy also to be applied to
non-offset axes. (Examples in maputils tutorial).
- minutes and seconds labeling for negative declinations get ‘-‘ sign
- center of offset axis can be changed with parameter startx, starty
and a string as argument.
- Right Ascension labels in TeX (hms) now have better alignment.
- New module profiles:
- added function gauest() for estimating gaussian components in
a profile. These estimates can e.g. subsequently be used as initial
estimates for a least squares fit.
- WCSLIB: changed to version 4.7 (from 4.5)
Version 2.0.2 (Sep 16, 2010)
- Class wcs.Projection:
- allow for FITS headers that incorrectly represent EQUINOX as a string
- added support for AIPS keyword VELREF
- Function mplutil.gipsy_connect() connects GIPSY keyword events
to Matplotlib event loop.
- Added Microsoft Windows support.
Version 2.0.1 (Aug 11, 2010)
- WCSLIB 4.5 included in distribution so
it does not need to be separately installed anymore.
Version 2.0 (Jul 16, 2010)
Version 1.9.2 (Jul 12, 2010)
- Function wcs.coordmap(): added arguments dst_shape, dst_offset
and src_offset.
- Class wcs.Projection:
- fixed bug in class WrappedHeader.
- allow for WSRT files with topocentric frequencies (via class WrappedHeader)
- added attribute altspecarg.
- Added modules rulers and shapes.
- Included SciPy modules filters and interpolation. The latter was slightly
modified.
Version 1.9.1 (Feb 25, 2010)
- Class wcs.Projection:
- added attribute euler.
- fixed bug in method mixed()
- Class mplutil.VariableColormap:
- added NumPy array as possible source.
- added method set_length()
Version 1.9 (Jan 16, 2010)