March 28, 2025
News for version 10 9 8 7 6 5 4.4 4.2 4 3.8 3.6 3.4 3.2 3 2 1 (Release History)
octave.
-e CODE for --eval CODE-g for --gui-G for --no-gui--no-init-user : Don’t read user configuration files ~/.octaverc or
.octaverc files at startup.--no-init-site : Don’t read site-wide configuration files at startup.--no-init-all : Don’t read any configuration files at startup.nchoosek algorithm is now ~2x faster and provides greater precision.
nextpow2 algorithm is now more accurate for inputs very close to a power
of 2. The output class now matches the input class for Matlab compatibility.
The function no longer accepts complex inputs and emits an error for these
inputs.
jsonencode now outputs integers and floating point integers without an
unnecessary “.0” suffix.
hist now accepts N-dimensional array inputs for input Y, which is
processed in columns as if the array was flattened to a 2-dimensional array.
The third output for unique is now correct when the stable sort option is
used.
Support setting breakpoints in set or get methods of classdef
properties (bug #65610).
.mex files now link to the new library liboctmex (instead of to
liboctinterp and liboctave). The SOVERSION of this new library is
expected to be stable across multiple major versions of Octave. The benefit
is that .mex files will not necessarily require rebuilding for every
major version release of Octave.
pkg describe command now supports a new Tracker tag in the DESCRIPTION
file and returns package-provided repository and bug tracker URLs. Package
maintainers are encouraged to utilize the new feature to redirect users to
package-specific bug trackers instead of Savannah.
pkg install now mentions package-provided URL and package-provided bug
tracker if they exist.polar plots now include the center tick mark value, typically 0, in the
'rtick' parameter when the plot is created. Subsequent modifications to
'rtick' by the function rticks will only include the center tick mark
value if it is specified.
view correctly interprets Cartesian viewpoints on main axes (bug #65641).
plot3 now draws a single marker if only one data point is given.
Previously the plot was blank (marker = "none") which was confusing.
height and width are now aliases for the rows and columns functions.
All colormaps now default to a size of 256 colors. (The previous default size was 64.)
The first argument to colormap may now be a figure or axes object. Calling
colormap on a figure object will clear any "colormap" properties set at
the axes level.
griddata output size more consistently matches the input interpolation
points when the inputs are vectors. If the inputs are vectors with the
same-orientation, then the outputs will be the same size as those vectors.
When either input is a row vector and the other is a column vector, the
interpolating points are processed through meshgrid and the output is a
matrix the same size as the meshgrid.
iqr now provides compatible output for empty inputs.
cross now produces row vector outputs when the inputs are a mix of row and
column vectors (bug #61295).
rat now accepts complex inputs.
The optional second input argument of system, denoting whether to return
the output as a variable, is now required to be a boolean value if used.
Octave functions whose Matlab equivalents give errors when passed non-integer
values as sizes or dimensions now also give similar errors. For example,
cell (e, pi) now gives an error in Octave about requiring integer sizes for
the cell array, matching Matlab behavior. Previously, Octave’s conversion
from non-integers to integers was more lenient.
issorted now accepts the MODE option "monotonic", which has the same
behavior as the option "either".
movfun and movslice: Functions now accept wlen equal to 1 or [0,0],
non-integer values of wlen, and values of wlen that create window lengths
exceeding the size of the target array. movfun also accepts values of
dim larger than the number of non-singleton dimensions in the target array.
The SamplePoints option has been implemented for both functions.
Non-numeric input array handling has been improved. These changes affect all
moving window functions (movmad, movmax, movmean, movmedian,
movmin, movprod, movstd, movsum, and movvar) (bug #65928,
bug #66025).
movfun: The nancond property has been fully implemented and made
Matlab-compatible. The omitnan option will ignore NaN and NA values
when calculating the function return, and, if all elements in a window slice
are NaN or NA, it will return the value contained in a new property
nanval (default NaN) for that element. The includenan property (the
default) has been updated for compatibility such that any window containing
NaN or NA will return NaN rather than passing those values to the
calculating function. omitmissing and includemissing are now accepted as
aliases for omitnan and includenan. These changes affect all moving
window functions (movmad, movmax, movmean, movmedian, movmin,
movprod, movstd, movsum, and movvar) (bug #66156).
movmin and movmax: These functions now have their default behavior set to
omitnan. NaN and NA values will be ignored unless a moving window
contains only NaN or NA values, in which case the function will return
NaN for that element (bug #66156).
movsum: When called with option omitnan, any windows containing only
NaN and NA values will return 0 (bug #66156).
movprod: When called with option omitnan, any windows containing only
NaN and NA values will return 1 (bug #66156).
movmad: The function now defaults to calculating median absolute deviation.
Before Octave 10, the function calculated mean absolute deviation. A new
method property has been provided that takes values of either "mean" or
"median" to allow the user to select which option to use. This property
should not be expected to function in code used outside of Octave.
(bug #66256).
symbfact: outputs count, parent, and post are now row vectors rather
than column vectors.
climrticklabelsthetaticklabelsThe following functions and properties have been deprecated in Octave 10 and will be removed from Octave 12 (or whatever version is the second major release after 10):
Functions
Function | Replacement
------------|------------
dsearch | dsearchn
Core
Function | Replacement
---------------------------------------------|-----------------------------------
symbol_record_rep::mark_as_variable | symbol_record_rep::mark_variable
symbol_record_rep::unmark_as_variable | symbol_record_rep::unmark_variable
symbol_record::mark_as_variable | symbol_record::mark_variable
symbol_record::unmark_as_variable | symbol_record::unmark_variable
interpreter::verbose | interpreter::init_trace
cmdline_options::verbose | cmdline_options::init_trace
interpreter::read_init_files | interpreter::read_user_files
cmdline_options::read_init_files | cmdline_options::read_user_files
__lo_ieee_isnan, __lo_ieee_float_isnan | std::isnan or isnan
__lo_ieee_isfinite, __lo_ieee_float_isfinite | std::isfinite or isfinite
__lo_ieee_isinf, __lo_ieee_float_isinf | std::isinf or isinf
__lo_ieee_signbit, __lo_ieee_float_signbit | std::signbit or signbit
A new method rwdata () provides direct read/write access (a pointer) to
the data in a liboctave Array object (or its derived classes such as
Matrix). Historically, the method fortran_vec () provided this access,
but the name is unclear, and it is recommended to use rwdata () in any
new code. There are no plans to deprecate fortran_vec.
The --verbose,-V command-line option has been deprecated. Use
--init-trace to print the configuration files executed during
initialization.
The following features were deprecated in Octave 8 and have been removed from Octave 10.
Functions
Function | Replacement
---------------------|---------------------
shift | circshift
sparse_auto_mutate | none (see NEWS.8.md)
fminsearch parameter passing: A legacy, undocumented, and only partially
supported syntax for passing parameters to the minimized function fcn
called by fminsearch by appending them to the input argument list was
partly implemented since Octave 4.4.0. Due to conflicts with other input
methods, the documentation of this syntax was removed in Octave 5.1.0. The
remaining functionality has been completely removed in Octave 10. Attempts
to call fminsearch with that syntax will result in an error. The preferred
method of passing parameters to any of the minimization functions (including
fminsearch, fminbnd, and fminunc) is through the use of anonymous
functions. Specific examples of this can be found in the “Minimizers”
section of the Octave manual.
The unsupported and unnecessary load options of -force and -import have
been removed. If legacy m-files are still invoking load with these options
update the code and remove them.
Octave now requires a C++ compiler that is compliant with C++17 (preferably with GNU extensions).
The location of the list of packages installed site-wide for all users
(pkg global_list) has changed (bug #66831). The file octave_packages is
now installed at octave-config -p LOCALAPIPKGDIR. There will be no
disruption if you are upgrading to version 10.1 of Octave and then installing
packages. If you want to use previously installed packages that you know
will run without re-compilation (because the package uses m-files only and no
oct-files or mex-files), then you can execute the command
pkg global_list CURRENT_GLOBAL_LIST_FILE (e.g., from within one of your
startup files) to point Octave to the existing list. Alternatively, run
pkg rebuild -global once (potentially requires superuser rights), or copy
CURRENT_GLOBAL_LIST_FILE to the path and filename returned by
pkg global_list.
hist.m: Test for equal bin spacing using a numeric tolerance.hist.m: Fix regression in determining equal bin spacing.Octave:mixed-string-concat warning in
num2str.m.cellfun and arrayfun.cellfun BIST for function failing to return requested
output.arrayfun BIST for function failing to return requested
output.struct2cell with function without output
arguments.structfun with function without output
arguments.symbfact: Return row vectors for Matlab compatibility.sparseqr: Support permutation output with CXSparse.qr() is called with permutation output and
CXSparse library is used.qr (sparse, 0) isn’t equal to qr (sparse, 'econ', 'vector').path (_) manipulations.legend and bar cause ASAN to crash Octave.fseek and ftell functions don’t always work correctly on
Windows with filesizes >2GB.menu() throws an error when Qt dialogs are not available.movmad uses ‘mean absolute deviation’ while Matlab uses ‘median
absolute deviation’.nanflag option for moving window functions.movfun: Implement SamplePoints option.glpk produces incorrect output.nthargout does not propagate error ID.movfun dimension constraints: Shouldn’t error for
dim > ndims(x), or wlen > size(x, dim), or wlen=1.struct values in containers.Map.issorted: enable 'monotonic' and 'strict...' sort modes.axes 'colormap' property being set over figure 'colormap'
property.system().perms.cc: Use constexpr instead of template
specialisation.view produces incorrect viewpoint when given a vector aligned
with the primary axes.short_disp doesn’t show ellipsis at end of long arrays.%! first.xint_value does not work the way it is intended.iqr handling of empty inputs is not compatible.nchoosek error ‘gcd: all values must be integers’uifigure ('visible', 'off') temporarily creates a visible
figure window.jsonencode does not accept integer values larger than 999999.nextpow2 incorrect for some inputs slightly larger than powers
of two.nchoosek.m algorithm to prevent numerical issues.movfun: Create inputParser only once.unique.m: Enable third output with option 'stable'.griddata: Output size inconsistent for vector input
interpolation points.height and width as aliases for rows and
columns for Matlab compatibility.polar doesn’t populate 'rtick' with center tick value.cross(): Dimensions inconsistent with Matlab when using
mismatched input vector dimensions.sqrtm: Returns NaN for matrix of ones with rows and columns >=4.nargout for subsref when returned value may be a cs-list.properties function does not preserve order.rat() should support complex numbers.lastwarn: Save warning info for disabled warnings.lastwarn() behavior.