waves5.0.me

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\fBwaves\fP+ Version 5.0 Release Notes
.sp
Document Version: 1.9 9/10/93
.sh 1 "INTRODUCTION"
.lp
This document described changes to \fIxwaves\fR since version 3.1 (the
version prior to 5.0).    For complete details refer to the \fIxwaves\fR
manual.
.lp
Extensive changes were made in the previous release (ESPS Version 4.2;
\fIwaves+\fR Version 3.1).  These changes were primarily aimed at correcting
errors and numerous operational deficiencies in the software.  Please
refer to either the printed copy of these earlier release notes, or
see the on-line version in \fI$ESPS_BASE/doc/rel4.2.doc\fR 
and \fI$ESPS_BASE/doc/wrel3.1.doc\fR.
.lp
Many of the new features described below are made easily accessible
through the new \fIxwaves\fR startup environment we provide.  To be certain
that you obtain this handy new environment, check that the global
\fIinit_file\fR \fBis not\fR defined in your \fI.wave_pro\fR startup profile 
file.  If
you do not have a personal profile (in \fI$HOME/.wave_pro\fR), you will
automatically get the new environment.
.sh 1 "VERSION 5.0 RELEASE HIGHLIGHTS"
.lp
Major highlights include:
.ip \ \ \ \(bu
High resolution PostScript and PCL output of all \fIxwaves\fR graphics
.ip \ \ \ \(bu
A fully general operator-definition mechanism for designing new \fIxwaves\fP commands
.ip \ \ \ \(bu
Symbolic access by remote processes to \fIxwaves\fP internal state
.ip \ \ \ \(bu
Improved user interface, including customizable tool-bars
.ip \ \ \ \(bu
Full \fIxwaves\fP access and synchronization via \fIsend_xwaves\fP
.ip \ \ \ \(bu
Unrestricted waveform-on-waveform and waveform-on-spectrogram overlays
.ip \ \ \ \(bu
View-specific and view-element-specific display customization
.ip \ \ \ \(bu
Flexible view- and element-specific control of vertical display scale
.ip \ \ \ \(bu
All \fIxwaves\fP commands now mappable to the keyboard keys
.ip \ \ \ \(bu
Reticles available for all view types
.ip \ \ \ \(bu
Complete facilities for saving and restoring \fIxwaves\fP customizations
.ip \ \ \ \(bu
A new script, \fItest_waves\fP provides a test and \fIxwaves\fP use examples.
.ip \ \ \ \(bu
Multiple, simultaneous attachments
.ip \ \ \ \(bu
Long-lines editing interface for \fIxlabel\fP
.ip \ \ \ \(bu
Cepstral smoothed spectra in \fIxspectrum\fP
.ip \ \ \ \(bu
Frequency and amplitude zooming in \fIxspectrum\fP
.ip \ \ \ \(bu
Unlimited input array size for \fIxspectrum\fP
.sh 1 "SUMMARY OF MAJOR CHANGES"
.lp
Version 5.0 of \fIxwaves\fP is compatible with scripts and use
patterns established for earlier versions.  Note, however, that many
new things are possible, and many of the old restrictions have been
removed.  Even experienced users should be sure to read the updated
\fIxwaves\fP and attachments manuals before designing new control
scripts or user interfaces.  In particular, study the new \fIadd_op\fP
command and the \fISymbols\fP section of the \fIxwaves\fP manual.
.lp
In most instances it is now preferable to control \fIxwaves\fP directly from
the shell (or shell scripts) by way of the \fIsend_xwaves\fP
command-dispatching program.  In previous versions, the utility of
\fIsend_xwaves\fP was limited by failure of processes using it to
synchronize properly with \fIxwaves\fP.
The program \fIsend_xwaves\fR can now optionally block for ALL \fIxwaves\fR
commands, including \fIsleep\fR and \fIpause\fR.  This permits much greater
flexibility in the design of shell scripts that control \fIxwaves\fR running
as a display server.  \fISend_xwaves\fR can send commands to \fIxwaves\fR 
running on
any host in the internet namespace.  \fISend_xwaves\fR now returns the result
of \fIxwaves\fR \fIget\fP commands to it's standard output.  It also
returns a non-zero exit status on failure to communicate correctly with
\fIxwaves\fP.
.lp
We now provide an \fIxwaves\fR test script.  In addition to its use in
verifying the soundness of your installation, it includes numerous
examples of new and old \fIxwaves\fR features.  As you read the new manual,
refer to the UNIX shell script in \fI$ESPS_BASE/bin/test_waves\fR.

.sh 2 "Fundamentally New Capabilities"
.sh 3 "Graphics Output"
.lp
\fIXwaves\fR and its attachments now have the capability to export
their graphics (all plots) in either embedded PostScript for PCL (HP LaserJet
code).  This can be used to print \fIxwaves\fR displays directly on the
printer, or to generate graphics to be imported into a document with a
suitable text editing program.  A new menu item has been added to the
default menu on each \fIxwaves\fP data view: \fIprint graphic\fR.
Selecting this item causes the view to be redrawn at full printer resolution
using PostScript or PCL with the results going to a file or to the
printer of your choice.
.sh 3 "Multiple attachments"
.lp
\fIXwaves\fR may now have any number of attachments active simultaneously,
including multiple invocations of the same attachment.  The attachment
and \fIsend_xwaves\fR facility has been completely reimplemented using the
standard unix remote procedure calls (RPC).  Attachments can
either be started by \fIxwaves\fR, or run as programs in separate shells.
.sh 3 "Overlays"
.lp
The signal-overlay facility has been fully generalized.  Signals can
be overlaid on one another regardless of their respective data types
or sampling frequencies.  Multiple overlays in distinctive colors are
supported.  Overlays may be selectively removed from the view using
the kill command.
.sh 3 "View Customization"
.lp
Many operations formerly available only as global operators for all
\fIxwaves\fR displays can now be performed on a view-specific and
view-element-specific basis.  This includes setting or changing any of
the view display attributes.  The displays are now updated automatically to
reflect any changed made in their attributes.  Previously, an explicit
refresh operation had to be performed.
.sh 3 "Ordinate Markers"
.lp
Ordinate markers have been added to \fIxwaves\fR.  These horizontal dashed
lines may be used to delimit y-coordinate information, select a
channel index, or establish a data value, depending on the context.
The markers appear in all views and are moved synchronously when their
meaning across views is coherent.  The same basic paradigms are used
to move the horizontal and vertical markers with the mouse pointer.
To select horizontal cursor movement, depress the shift key.
.sh 3 "Keyboard Mapping"
.lp
We have implemented the mapping of \fIxwaves\fR operators to keyboard keys.
Any built-in menu operator or operator added with \fIadd_op\fR may be bound
to a key.  There are three new \fIxwaves\fR commands for managing this
mapping: \fIkey_map\fP, \fIkey_unmap\fP and \fIsave_keymaps\fP.  See
the \fIxwaves\fP manual for details.
.sh 3 "Long-lines Editing"
.lp
We have added a text widget to permit long-lines editing in \fIxlabel\fR.
The editing mode is entered by left mousing the item to be changed
with the CTRL key depressed, or by selecting the *EDIT* item in the
\fIxlabel\fR menu. This quick editor uses exactly the same application rules
as the REPLACE mode.  (It is sensitive to the active items and the
starred active item; it applies to the label closest in time, etc.)
.sh 3 "Cepstral Smoothing"
.lp
Cepstral smoothing has been added to the FFT-based spectrum estimation
methods.  The original code modifications provided by the MIT-LCS group have
been expanded to include control over the lifter transition region.
Thus, one can choose highpass or lowpass; the nominal cutoff qufrency;
and the qufrency transition duration.
.sh 3 "Zooming in Xspectrum"
.lp
Zooming to markers in amplitude and frequency has been implemented in
\fIxspectrum\fR.  By default, if a non-null region is delimited with
the horizontal and/or vertical markers, zooming takes place
immediately to that region.  The right-button menu permits
enabling/disabling this feature. Markers are moved using the up/down
move paradigm with the left mouse button.  Horizontal markers are
moved with the shift key depressed. Since the left mouse button in
\fIxspectrum\fR is now used to move the frequency/amplitude cursors,
it no longer automatically saves the current spectrum as an underlay
reference.  This can, however, still be accomplished using the right
mouse-button menu.

.sh 2 "Extensibility Features"
.sh 3 "Custom Operators"
.lp
A generalized mechanism for adding \fIxwaves\fR commands that provides
external processes with complete access to \fIxwaves\fR internal state was
added.  The command that accesses this capability is called \fIadd_op\fR.
It subsumes the functions of \fIadd_espsf\fR, \fIadd_espst\fR, 
\fIadd_waves\fR, and
\fIadd_espsn\fR.  All unix processes are now accessible via \fIadd_op\fR,
regardless of their command-line syntax or semantics.  All internal
\fIxwaves\fR functions may also be used in \fIadd_op\fR commands, including other
\fIadd_op\fR commands.  All operators defined using \fIadd_op\fR may access
\fIxwaves\fR' internal state and the state of any view using symbolic
reference.  Output file specifications can appear anywhere on the
command line and can include, in one command, data destined for text,
waveform or spectrogram displays, as well as viewless output files.
Add_esps{f,n,t} are now considered obsolescent. However, they are
still emulated using the new \fIadd_op\fR command..
.sh 3 "Access to Time Marks"
.lp
\fIXwaves\fR has always had commands to apply permanent marks to the
displays (the \fImark\fR command).  These marks were formerly used
primarily by the attachments, like \fIxlabel\fR and \fIxmarks\fR, to indicate
segment boundaries.  We now provide generalized access to these
through symbols.  This permits the development of very useful segment
operators with the \fIadd_op\fR command.  It provides a means for very
rapid random access for comparison of segments in a given signal.
.sh 3 "User-defined Symbols"
.lp
\fIXwaves\fR now supports the definition of arbitrary symbols, much like the
UNIX environment variable facility.  These definitions are accessed
through exactly the same mechanisms used for managing built-in globals
(profile file; \fIset\fR and \fIget\fR commands; symbolic reference in \fIadd_op\fR
commands).
.sh 3 "Arbitrary Button Bindings"
.lp
The Button Modes menu selection has been extended to include all
active menu items.  Buttons may now be bound to any menu item and any
operation defined with the \fIadd_op\fR command on a view-specific basis.
Thus, each data view in an ensemble can have its own button semantics
individually defined.
.sh 3 "External Access to Menus"
.lp
All \fIxwaves\fR menu-driven operations and other operations, including
those created with \fIadd_op\fR, may now be accessed by xwaves-external
processes using the new command, op.  Op may be sent to any display
ensemble.  It can be used to simulate any mouse or keyboard operation
in any view.
.sh 3 "Symbolic Access"
.lp
The \fIxwaves get\fR command has been expanded to access essentially all
of \fIxwaves\fR' internal state.  This includes the so-called global
items, as well as attributes of all current views, and lists of such
things as current operators, commands and files.  These are the items
also accessible through symbolic references in \fIadd_op\fR commands.
.sh 3 "Custom Blow-up Function"
.lp
We added \fIblowup_op\fR as a global settable to permit specification of the