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Gnuastro 0.7 released
Gnuastro 0.7 released
Wed, 8 Aug 2018 20:36:24 +0200
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I am pleased to announce the seventh release of GNU Astronomy Utilities
Gnuastro is an official GNU package consisting of various command-line
programs and library functions for the manipulation and analysis of
(astronomical) data. All the programs share the same basic
command-line user interface (modeled on GNU Coreutils). For the full
list of Gnuastro's library, programs, and a comprehensive general
tutorial (recommended place to start using Gnuastro), please see the
links below respectively:
For a full list of what is new in this release compared to the
previous official release, please see the NEWS file below . To
uncompress Lzip tarballs, see  and to check the validity of the
tarballs using the GPG detached signature see .
Here are the compressed sources:
Here are the GPG detached signatures[*]:
Here are the MD5 and SHA1 checksums (other ways to check if the
tarball you download is what we distributed):
This is the first bug-fix release, with more bugs fixed than major
features added! This may be a good sign that Gnuastro is starting to
stabilize and its tools are becoming more mature. But of course, we
still have a long way to go reach the 1.0 version (first link below),
and many tasks (second link below). So please join us if you are
I am very grateful to (in alphabetical order): Valentina
Abril-melgarejo, Leindert Boogaard, Nushkia Chamba, Takashi Ichikawa,
Oryna Ivashtenko, Geoffry Krouchi, Alan Lefor, Juan Molina Tobar,
Dmitrii Oparin, Teymoor Saifollahi, Jenny Sorce and Aaron Watkins who
provided many great comments, suggestions and/or bug reports to this
release. I am also generally very grateful to the organizers and
attendees of the 4th Indo-French Astronomy School that was held here
in Lyon. It was a very productive week for Gnuastro (with great
suggestions along with many bugs that were found and fixed).
If any of Gnuastro's programs or libraries are useful in your work,
please run the relevant programs with a `--cite' option (it can be
different for different programs) for guidelines on how to cite and
acknowledge them in your papers. Citations and acknowledgments are
vital for the continued work on Gnuastro, so please don't forget to
support us by doing so.
This tarball was bootstrapped (created) with the tools below. Note
that you don't need these to build Gnuastro from the tarball, these
are the tools that made the tarball.
Autoconf archives v2018.03.13-87-g72e8def
For Gnuastro's build dependencies, please see:
Postdoctoral research fellow,
Centre de Recherche Astrophysique de Lyon (CRAL),
Observatoire de Lyon. 9, Avenue Charles André,
Saint Genis Laval (69230), France.
 Noteworthy changes in release 0.7 (library 5.0.0) (2018-08-08) [stable]
** New features
--enable-debug: debugging flags, no optimization, no shared libraries.
--enable-check-with-valgrind: Run `make check' tests within Valgrind.
- `set-A': Set a name (`A' in this case) for the popped dataset. This
allows only reading the dataset it into memory once and
possibly using it many times.
- `fill-holes': Flip background (0) pixels surrounded by foreground
- `collapse-sum': collapse/remove a dimension by summing over it.
- `collapse-min': collapse/remove a dimension by using maximum value.
- `collapse-max': collapse/remove a dimension by using minimum value.
- `collapse-mean': collapse/remove a dimension by averaging over it.
- `collapse-number': Number of elements included in the collapse.
- Default cosmology set to Plank 2018 results (Paper VI).
--minx: minimum position along first FITS axis.
--maxx: maximum position along first FITS axis.
--miny: minimum position along second FITS axis.
--maxy: maximum position along second FITS axis.
--colinfoinstdout: column information when writing to standard output.
- gal_array_name_recognized_multiext: If format contains multiple
- gal_dimension_collapse_sum: collapse/remove a dimension by summing.
- gal_dimension_collapse_mean: collapse/remove a dimension by
- gal_dimension_collapse_number: collapse/remove a dimension by number.
- gal_dimension_collapse_minmax: collapse/remove a dimension by
- gal_wcs_remove_dimension: Remove a dimension in the given WCS
** Removed features
** Changed features
--checkcenter: the units of value depend on mode (image or WCS).
- `--checkuplim': new name for `--checkupperlimit'.
- `--brightnessnoriver': new name for `--noriverbrightness'.
- gal_txt_write: new `colinfoinstdout' argument.
- gal_table_write: new `colinfoinstdout' argument.
** Bugs fixed
bug #54057: Building failure due to not finding gsl_interp_steffen.
bug #54063: Match tests in make check fail randomly.
bug #54186: MakeCatalog's --checkupperlimit not keeping output's name.
bug #54188: MakeCatalog's Upperlimit not being sigma-clipped properly.
bug #54284: Crop segfault when catalog contains no data.
bug #54285: make check fails if g++ not present.
bug #54286: BuildProgram's configuration file, not built by default.
bug #54297: No Match output when --notmatched called and no match.
bug #54298: Table not writing array when there are no rows.
bug #54312: Crash when CFITSIO doesn't have fits_is_reentrant function.
bug #54346: Non '-I' or non '-L' strings in CPPFLAGS or LDFLAGS cause
bug #54358: Arithmetic's where, not ignoring blank values in condition.
bug #54406: Insufficient sanity checks in mode symmetricity calculation.
bug #54430: BuildProgram fails with older Libtool versions on dash.
 Lzip has better compression ratio and archival features compared
to the common `.gz' or `.xz' formats. Therefore Gnuastro's stable
releases are made in `.lz' along with `.gz' for historical
reasons. The alpha/test releases are only in `.lz'. If you don't have
Lzip, can download and install it from its webpage:
If you use GNU Tar, then the single command below should uncompress
and un-pack the tarball:
$ tar xf gnuastro-0.7.tar.lz
If the command above doesn't work, you have to un-compress and un-pack
it with two separate commands (or use a pipe to feed the output of the
first into the second):
$ lzip -d gnuastro-0.7.tar.lz
$ tar xf gnuastro-0.7.tar
 Use a .sig file to verify that the corresponding file (without the
.sig suffix) is intact. First, be sure to download both the .sig file
and the corresponding tarball. Then, run a command like this:
gpg --verify gnuastro-0.7.tar.gz.sig
If that command fails because you don't have the required public key,
then run this command to import it:
gpg --keyserver keys.gnupg.net --recv-keys 1849814357EFB73A
and rerun the 'gpg --verify' command.
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