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WHATS.NEW
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1995-11-10
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*** What's New in Version v1.23 ?
1) Some bug fixes, and additions to the misc directory. Most
notably, the addition of the OS2 port-specific files.
*** What's New in Version v1.22 ?
1) Re-named some (6) of the plot-related functions so that
they use the same naming convention as the
rest. ./misc/plnames.awk (see below) is an AWK script, that
will change the names for you in any rfiles you may have.
# BEGIN plnames.awk
# A simple AWK script to change some names...
#
{ gsub("pclose", "plclose");
gsub("pend", "plend");
gsub("pstart", "plstart");
gsub("ptitle", "pltitle");
gsub("pwin", "plwin");
gsub("showpwin", "showplwin");
print; }
# END of plnames.awk
To use plnames.awk do:
awk -f plnames.awk < file.r > tmp.r
mv tmp.r file.r
You can automate this in a shell script:
#!/bin/sh
for i in `ls *.r`
do
echo $i
awk -f plnames.awk < $i > jnk
mv jnk $i
done
BUT, be careful, if you make a mistake, you can destroy some
files. I recommend making a backup of any files _before_ using
the above.
2) New functions: plpoint, plline to control point and line
styles.
3) Finally got rid of the need for a final newline character
before End-Of-File.
4) New function surspl() (Suface Splines Interpolation).
5) Added RLAB_HELP_PAGER to the accepted environment
variables. This allows users to specify a separate pager for
the help command. If you don't do anything, everything will
behave as before.
6) New rfiles bodetf, lintrp.
*** What's New in Version v1.20 ?
1) Sorry, but I had to change the string-matrix ASCII output
format. To convert files from older versions to this version,
read in the file(s) using an older version of rlab. Then right
out the data in binary format. The binary files are readable
by this version of rlab.
2) Internally, I have removed the scalar class. This internal
change should _not_ be visible to the end-user.
3) OS/2 port modifications have been merged in.
Thanks to John Perterson.
4) New file: INSTALL.2
5) Fixed some bugs in strsplt...
6) Added new syntax to make system() easier:
\ system-command
The `\' must be the 1st character in the command.
*** What's New in Version v1.19 ?
1) Clean up of matrix/scalar operations. What does this mean?
Nothing to most. More consistent REAL/COMPLEX typing to
some.
2) Format() now returns a matrix of the _old_ format
specifiers, and accepts a matrix as input. Useful for setting
the format back in a function.
3) bug fixes.
4) New rfiles median.r, mdsmooth.r, stmag.r, stzcr.r,
avsmooth.r, steng.r (Thanks to Lt. Dennis Brown).
5) new builtin hex().
6) Karl has updated the gnuplot plotting, and added a
misc/gnuplot_test.r.
7) Portability fixes for OSF and HP-UX ...
*** What's New in Version v1.18 ?
1.) Strsplt now takes a second, optional, argument that denotes
the field width to split on.
2.) isinf, isnan, finite, cumsum, cumprod are all builtin
functions now. This has the potential to substantially speed
up scripts that use these functions.
3.) quadr.r, corr.r, spectrogram.r, autospec.r, isreal.r,
nextpow2.r
4.) Bug fixes...
5.) Some of the help files, like `IF', have been renamed to
`if'. This should make it easier on newcomers who are inclined
to type `help if'.
6.) updated gnuplot support. Thanks to Karl Storck.
*** What's New in Version v1.17 ?
1.) Added Inf capability to 2nd arg of norm (see help, obscure
feature).
2.) hilbert.r: Hilbert transform, new file.
3.) Some other obscure features/changes in various plotting
and numerical functions in order to make the testmatrix
toolbox an easier port.
4.) Added frexp(), logb(), and log2().
5.) Added second (optional) argument to getline to allow users
to read in entire line as a string.
6.) Now you can do:
</ v ; d /> = eig (a);
This is be-grudgingly supplied to help Matlab users
transition, and cut down on copies in functions.
The thing on the left hand side is called an "open-list". See
`help LIST'
*** What's New in Version v1.15 ? (I think this should be 1.16)
1.) Some effort has been expended to re-work some of the guts
in an attempt to safely speed interpreter execution.
Additionally work has been done to clean up the parser
generated op-codes, and simplify the functions (operations) in
the virtual machine.
Specifically: Re-work conditional interpretation.
Speed up temporary entity handling.
Due to the nature of the beast (RLaB), execution times will
not change uniformly, some operations should be faster, some
might not change much. But, on the whole, the trend should be
faster execution (anywhere from 0-50% on my machine).
2.) Converted over to autoconf-v2.x. This should not mean
anything to users, configure is still run in basically the
same way.
3.) Implementation of standardized floating-point exception
handling. Now rlab should ignore all floating point
exceptions, except overflow. This works on SVr3.2 and SVR4.x,
Suns, HPs, and Linux. If this gives you problems during build,
then see the PROBLEMS file (run configure with
`--disable-fpe').
4.) A more accurate tic() and toc() using your system's
times(2) function (if it exists). If your system does not have
a times(2), then the older/less-precise tic() and toc() are
used. Users should note that using tic() and toc(), in either
implementation, is probably not valid for timing tests unless
the test take at least a few seconds (> 10 is best).
5.) The scanner can now deal with Matlab style comments `%'.
6.) The rfile command is now more useful. Rfile handles
multiple names and trailing comments.
7.) More improvements in the autoconfiguration.
8.) There is a new command, called `require' (see `help
require'). This command is like rfile, except that it won't
re-read files when the function already exists in the
workspace.
*** What's New in Version v1.13b ?
1.) There has been an internal overhaul of builtin function
argument handling. No new features, just easier for people to
write dynamically linked builtin functions (rex-files) once
the documentation is done.
2.) fvscope now annotates non-function, global variables with
an asterisk (`*').
3.) New rfiles, section.r, show_prop.r.
4.) Added plsfile to allow users to specify Plplot output
file.
5.) I have been working on configure again (a never ending
process). Now using dynamic-linking is standard for SVr4 and
Solaris. configure will look for plplot in /usr/local/plplot
and /usr/local/... if nothing is specified.
6.) OVERHAUL FUNCTION SCOPING RULES. See `help FUNCTION',
`help global', `help local', and `help static'.
7.) Functions can now use the variable `nargs' which is
automatically initialized to the number of arguments passed to
the function. see `help FUNCTION'.
8.) det() now returns zero after issuing a warning when given
a singular matrix as an argument.
9.) ode() can now take an optional last argument that is a
function to process the output. See `help ode'.
10.) The Primer has been updated to reflect new scoping rules.
11.) New gnuplot.r from Karl Storck.
*** What's New in Version v1.09i ?
1.) Mostly a portability release. Binary I/O has been improved
so it should work better on "non-standard" platforms
(DEC-alpha). Some clean ups have been done to make RLaB build
easier on HP-UX.
2.) `make install' has been overhauled to use version numbers
on the executable, and the lib directory. The new install
procedure will also try and move the old stuff out of the
way. Nothing is removed, except the old executable. As always
`make -n install' is highly recommended.
3.) Bug fixes to plhist, plhistx plotting. Addition of
subplot() function.
4.) New builtin, putenv.
5.) New argument for plot, see `help plot'. Also some
general bug fixes in the plotting routines.
6.) Add symmetric/Hermitian factorizations to `\', solve,
factor, backsub. factor and solve now have an optional
argument to allow the user to overide symmetry check.
7.) Bug fix in eval() string argument check.
*** What's New in Version v1.09 ?
1.) Dynamic linking is functional for SVr4.0, SunOS-4.x,
SunOS-5.x. However, there is no documentation at this
point... Next release.
*** What's New in Version v1.07 ?
1.) Not much except for some bug fixes (plugged a memory
leak). Mostly there has been some re-organisation of the file
and function structure in an attempt to make dynamic linking
possible. Before we go any further though, a significant
amount of testing should be done.
*** What's New in Version v1.05 ?
1.) fread(), fseek(), if you are a C programmer you know what
these are. The args are a little different.
2.) eval is now a built-in. Also eval returns the result of
the last statement, and can be used in function with local
variables. The best part is that eval no longer used temporary
files to do its job.
3.) sign() is builtin.
*** What's New in Version v1.02 ?
1.) readm() is MUCH faster.
2.) Revised toeplitz
3.) Added tmpfile() (builtin).
4.) Improved contour plotting so that only visible contours
are displayed in legend.
5.) Improvements to `make Test' - much less use of rand().
*** What's New in Version v1.0 ?
1.) New functions (rfiles) bessely, besselj.
2.) local() modified so that arguments are copied.
See `help FUNCTION'
3.) Numerically singlular inputs to solve(), \ are now handled
with warnings and in a more uniform fashion.
4.) ./misc/rlab-mode.el
I am NOT an Emacs-lisp programmer. This is hacked from
tcl-mode.el. if anyone can improve it - go for it.
5.) Added plcont() - contour plotting.
6.) The primer has been updated to match version 1.
*** What's New in Version 0.99i ?
1.) Added plhold(), plhold_off, and plegend().
2.) New rfiles roots() and poly(), join() from T. S. Yang.
3.) A more recent version of fftpack. Sorry, but the accuracy
is much better with the new version (rfft-1.2.tar.gz) -
precision demands it.
4.) examples/plhold_demo.r is new.
5.) The plot help has been split up into separate files.
*** What's New in Version 0.99f ?
1.) Added plmesh().
2.) Added examples/curve_fit.r
3.) min(), max() now accept two numeric args.
*** What's New in Version 0.99e ?
1.) Bug fixes.
2.) rfile will check the value of _rlab_search_path during
execution.
*** What's New in Version 0.99d ?
1.) Bug fixes.
2.) ode() argument list is now consistent with ode4() and
ode78().
3.) Added open() and getb().
*** What's New in Version 0.99 BETA ?
1.) New rfiles: mdsmax.r, and nmsmax.r. Both perform
unconstrained optimization.
2.) Fixed non-Matlab-like behavior in acos(), and asin().
3.) getline() returns a NULL string when a blank line is
encountered.
4.) Added writeb() and readb(). Read and write binary files.
MATLAB compatibility (see `help readb', `help writeb').
5.) Added ode(). Ordinary differential equation integrator
(netlib).
6.) Fixed readm() so it will read from pipes.
7.) Added getenv() built-in function.
8.) Plotting enhancements... plfont(), pltex(), plsori(),
plwid(), plaxis().
9.) filter() is now a builtin, compatible with MATLAB's
implementation.
10.) Enhancements to matrix element-by-element operators, see
`help OPERATORS'. Added `.+' and `.-'
*** What's New in Version 0.97 BETA ?
1.) More plplot improvements. Updated primer to reflect plplot
usage.
2.) Some non-Unix portability enhancements.
3.) Equality (== and !=) tests are allowed between numbers and
strings.
4.) New builtin function schord(). See `help schord'.
*** What's New in Version 0.96 BETA ?
1.) mod & atan2 functions now take various combinations of
matrices.
2.) read() now taks optional 2nd argument (see `help read').
3.) New fix(), and fixed up czt().
4.) The configure script has been improved to take more
options (see INSTALL).
5.) Changed eig (slightly), and added eigs (symmetric), eign
(non-symmetric). Non-symmetric generalized eign() returns
left-eigenvectors now.
6.) Added strtod().
7.) Added PLPLOT built-in plotting capability. You must have
the double precision version of the plplot library for it to
work. See `help plplot' and `examples/plot_test.r'.
8.) Added sizeof() (see 'help sizeof') and re-worked whos().
*** What's New in Version 0.9(3-5) BETA ?
1.) New functions: complement(), intersection(), set(),
union(), faxis(), fftplot(), window(), fmin(), dot().
2.) readm(), and writem() have been modified so that the row
and column values at the top of the file are no longer needed.
This means old files written with writem() will have to have
the first line filtered out. It also means that readm() should
be able to directly read "flat-files" written by other
programs.
3.) New & Improved qr(). New option qr(a,"p") for column
pivoting. And qr() now works on MxN where M < N as well as
M >= N.
4.) Function argument handling has been improved.
my_func ( , , A )
is now possible.
5.) Many bug fixes.
6.) fft(), and ifft() now work like MATLAB's
7.) name() is gone (it wasn't of any use anymore anyway).
8.) Added lyap() (user-function), and sylv() (builtin-function).
9.) RLaB uses autoconf now.
10.) Added issymm(), see `help issymm'.
11.) Writem no longer closes the file after each call.
12.) New and improved eig, see `help eig'.
13.) Improved command line options. Added `-V' (version #),
`-m' (no message on startup), and a usage message if an
incorrect option is used.
14.) Added czt() - Chirp z-transform.
*** What's New in Version 0.92 BETA ?
1.) New functions: input, num2str, funm, logm, disp, input,
mret finite, printmat, int2str, filter, and isempty.
2.) A new builtin function called fvscope() (Function
Variable SCOPE). Fvscope identifies the variables used in a
function, and what their scope is. This is very useful for
writing general purpose library functions.
3.) Bug fixes to the error recovery.
*** What's New in Version 0.91 BETA ?
1.) RLaB can now load() files while executing code, such as in
for, or while loops, or within functions. This makes a simple
eval function possible. See `help load', `help eval',
`help BUGS'.
2.) Added expm() rfile.
*** What's New in Version 0.86 BETA ?
1.) Bug fixes.
*** What's New in Version 0.85 BETA ?
1.) Enhanced svd(), See `help svd'.
2.) Bug fixes.
*** What's New in Version 0.84 BETA ?
1.) Added schur()
2.) Bug fixes.
*** What's New in Version 0.83 BETA ?
1.) The usual bug fixes.
2.) Added doc/tutorial.3.tex (List Tutorial).
*** What's New in Version 0.82 BETA ?
1.) My apologies again, but I have restructured the class,
type hierarchy in rlab. This was necessary for several
reasons. The new hierarchy is only slightly different, and
is described in the help files: class, type, and show. The
new hierarchy looks like: (from the help file "type")
CLASS: num
TYPES: real complex
CLASS: string
TYPES: string
CLASS: list
TYPES: (see note 1.)
CLASS: function
TYPES: user builtin
2.) Improved type().
3.) Improved test-suite.
4.) Improvements in the makefile install target.
5.) Rlab now has a command line editing option that is much
smaller than GNU readline. Courtesy of Chris Thewalt.
See `help COMMAND_EDIT'
6.) The contrib directory has been removed. Most of the
contrib directories contents have been moved to the toolbox
directory. I did this because I have been forgetting to keep
the contrib directories files current with rlab. Also, the
original intention was to keep unaltered, contributed rfiles
there. Since I have had to modify the contents of contrib to
keep up with the changes in rlab, the contrib directory no
longer seemed appropriate. Maybe when rlab gets to v1.0.
7.) Small modifications to existing ODE integration functions.
8.) Added setterm(), showplot, phrd() to plot functionality.
*** What's New in Version 0.78 BETA ?
1.) Added file static() declaration.
2.) Added exist() built-in function.
3.) diag(), ones() are builtin.
4.) Added whos().
5.) Improved plot(), added pclose().
6.) Added factor(), backsub(). lu() is now a user-function.
7.) My apologies, but I found the "dummy" name scheme for
determining the status of a function argument to be
totally inappropriate for nested function calls.
Therefore, I have changed rlab behavior so that functions
that are called with fewer args than declared are supplied
UNDEFINED arguments to fill out the argument list. To test
the status of an argument do:
if (!exist (ARG))
{
// initialize the ARG, error(), whatever...
}
8.) Added qq_normal(), fliplr(), flipud() to ./toolbox
*** What's New in Version 0.75 BETA ?
1.) Fixed cumsum(), and cumprod() (much more efficient).
New rfiles save.r, clearall.r.
2.) Finished 1st draft of function tutorial.
3.) Improved getline().
4.) Removed need to terminate function declaration with `;' or
`\n'.
5.) The usual bug fixes, documentation improvements, etc...
*** What's New in Version 0.73 BETA ?
1.) length() more compatible with the other length().
2.) $$ can be used as global symbol table constant.
*** What's New in Version 0.71 BETA ?
1.) cd(). New function. Changes current working directory.
2.) redit.r: For editing rfiles.
3.) Addition to config.h (HAVE_INDEX).
*** What's New in Version 0.70 BETA ?
1.) Faster matrix multiplication functions ( ~ 20% ).
2.) sum(), and prod(), are builtin (faster). cumsum(), and
cumprod() will be builtin shortly (rfiles for now.
3.) Better signal handling.
4.) Some interpreter speedups.
5.) Matrix powers finally work.
6.) Some type-checking/handling consistency improvements.
7.) The example plot() function is simpler now.
8.) Empty matrix syntax added ( `[]' ).
9.) fft(), ifft() now work on MxN matrices. max(), and min()
any(), all(), sort(), work more like MATLAB versions.
10.) Many, many bugs fixed.
11.) `[ : ]' operation added. Forces Nx1 orientation of matrix.
12.) Complex atan, acos, asin, tan now work.
13.) A stop-gap matrix-tutorial in ./doc, updated man-page.
14.) .' non-conjugate transpose.
15.) getline() returns an empty list when nothing is read. See
`help getline'.
16.) length(): New function.
17.) `#!' can be used in rlab scripts.
*** What's New in Version 0.52 ALPHA ?
1.) Bug fixes.
2.) Now sort() returns a list of the sorted values, and the
sorted indices.
3.) maxi()/mini() now return a scalar index value. This value
can be used directly to index another matrix.
*** What's New in Version 0.51 ALPHA ?
1.) The help and rfile commands are more versatile. For
example: `help help' will work now.
2.) Vector creation (d1:d2:d3) rules make more sense (see
`help VECTOR').
3.) A\B, and C/D now use a more efficient algorithm when A or
C is square.
4.) There is a brief man-page.
5.) Some bug fixes in max(), min(), and mod().
6.) A directory of test-matrix functions has been added under
the examples directory.
*** What's New in Version 0.50 ALPHA ?
1.) The find function is now a builtin (much faster).
2.) The if-statement syntax has changed slightly. Used to be:
if ( expression ) {
statement(s)
} else { // The braces and the else must be on the same line
statement(s)
}
Now the correct syntax is:
if ( expression )
{
statement(s)
else
statement(s)
}
*** What's New in Version 0.32 ALPHA ?
1.) Added `rfile' command. `file name' now loads the file
named `name.r' if it can be located in your RLAB_SEARCH_PATH.
The simple command `rfile' prints a list of all the rfiles
that appear in RLAB_SEARCH_PATH.
2.) Changed `help' command to be consistent with `rfile'
command. The simple command `help' prints a list of: the help
files in the default help directory, and the rfiles in
RLAB_SEARCH_PATH. `help name' prints the content of the file
`name' to the standard output. If the file does not exist in
the default help directory, RLAB_SEARCH_PATH is searched.
3.) The `rlib' directory contents are now loaded upon startup,
instead of having a HUGE `.rlab' file. Added RLAB_LIB_DIR for
post-compile specification of library directory.
4.) All matrix output is paged. The pager is specified in the
config.h file.
5.) Added getline() function. Works sort-of-like the awk
getline. `x = getline("filename")' gets a line-at-time, and
splits it into fields. Each field is a member of a list. Thus,
x.[1] ... x.[N] contain the all the information from the line.
6.) Added strsplt(). Splits a string into a matrix of single
characters.
*** What's New in Version 0.30 ALPHA ?
Version 0.3x is the last of the ALPHA test releases. Notice I
did not say 0.30, since I do expect to release bug-fixes to
v0.30. The major obstacle to starting beta test is a better
online help, and a good printed manual. Other than bug-fixes
these two goals will be my major priority.
1.) RLaB-0.30 is more MATLAB-like.
2.) Vectors have been remove as a distinct type. However, all
of the usefulness of vectors is still accessible via single
indexed matrices.
Side effects:
This means that the append operator, `,', does not function
outside the [ ]. Instead, the comma (outside []) serves in a
more traditional sense, as an argument list separator.
Some of the built-in functions arguments are different. For
example, zeros used to take a 2-element vector as an arg. Now
zeros will accept two scalars, or a 2-element matrix.
3.) RLaB has adopted the MATLAB operator syntax.
+ - * / \ ^ Work in the traditional LA sense.
.* ./ .\ .^ Work in the element-by-element sense.
Note that `2./A' is the same as `2 ./ A'
Also note that `^' is not fully implemented yet.
4.) The printed documentation has been removed. Two of the
alpha testers have volunteered to overhaul the printed docs in
latex or latexinfo.
5.) Some changes in the numeric output format, and the
format() built-in function. See `help format'.
6.) RLaB will use matherr() instead of errno, If your machine
supports it (and you select it in config.h). This option
should prove much faster than checking errno after every math
library function call.
7.) New built-in functions: inf(), nan(), round().
8.) Matrix 2-norm has been added to norm(); `norm( m, "2" )'.
9.) "clock" option added to srand(); sets seed via the machine clock.