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Sysquake Release Notes

Sysquake 6.5

New features

based on LME 7.5

Minor changes

default left and right plot margins increased from 4 and 1 to 5 and 3, respectively
disabled controls (unspecified or negative id in button, pushbutton, slider, popupmenu, and textfield) displayed grey-out

Bug fixes

function subplotstyle could cause a crash; fixed
command history could get corrupted and cause a crash; fixed
progress bar was updated only in explicit loops; now it is also updated at the end of function calls, e.g. after the execution of functions of odeset
output arguments produced by graphical functions for dynamical systems could produce garbage; fixed

Windows

standard paths for SQ files and libraries fixed
resize handler wasn't called in 6.0.1; fixed
documentation was searched in the wrong directory; fixed
menus weren't updated when loading an SQ file from its editor window with menu File>Run; fixed

macOS

“Smart” substitutions for quotes, hyphens and spelling disabled

Linux

argument --version processed before initializing GTK+ (can be executed without graphics)
function tic could cause a crash in 6.0-6.0.1; fixed
multiple figure windows with different sizes weren't always redrawn correctly; fixed

Sysquake 6.0.1

New features

based on LME 7.0.1

macOS

file dialogs in init handlers could cause a crash; fixed

Sysquake 6

New features

based on LME 7.0
new libraries
new styles controlbg and controlfont in figurestyle and defaultstyle
type face and color with text in control figures
new input handlers, reading directly SQD files (incompatible with Sysquake before version 5.0)
new functions:

_v value of SQ variables

progress computation progress

sqfilepath path of SQ file

subplotstyle subplot style

tickformat subplot tick format
new options 'plotmargin' and 'tickfont' in figurestyle and defaultstyle
new option 'math' in plotoption to accept MathML or LaTeX in title, label, legend and controls
support for Home and End keys in command window
new option /set in function scale
new watch handlers, called upon SQ variable change

Minor changes

support for integer formats in textfield
support for element <mspace/> in math
reduced minimum subplot size
multiple colors in button and pushbutton
no more background in exported EPS and PDF files
improved error message in handler declarations with illegal assignments, such as assignments to indexed variables or structure fields
optional named id argument in text and math

Bug fixes

hgrid closed-loop magnitude circles fixed
variable loading and make circular dependency checking fixed
subplot position restoration with subplotsize fixed
textfield sometimes displayed corrupt data; fixed
a grid was always displayed when custom ticks were specified with ticks; fixed
support for non-ASCII characters in math with LaTeX notation
elements following beginlanguage/endlanguage weren't always found; fixed
colormap in multiple subplots fixed
image with size(im,3) not equal to 1 or 3 was accepted and displayed garbage; fixed
better compatibility of bounding box in exported EPS files
subplots in draw or mousedrag-related handlers could cause unexpected errors or crashes; now the case is detected and an error is thrown (see the documentation of subplots for more details)
after a mouse click, buttons without handler remained in the "pressed down" state; fixed

Sysquake Application Builder

current amount of memory allocated to Sysquake saved to applications it creates
command-line option for batch conversion (-o app-path on Mac and GNU/Linux, /o:app-path on Windows)

Windows

64-bit version
more modern GUI and graphics
in applications created by Sysquake Application Builder, menu Help>About preserved even with userinterface noappmenus
in applications created by Sysquake Application Builder, option /console to display output to the console (should be started from a Command Prompt window)

macOS

progress bar sometimes remained visible when it should not; fixed

GNU/Linux

slider and other controls could become unresponsive in SQ files with an idle handler; fixed
terminate handler not called when a figure window is closed with menu or shortcut; fixed

Sysquake 5

New features

based on LME 6.0
new libraries

new functions:

`altscale`	alternative y scale for 2D plots
`defaultstyle`	default figure style
`figurestyle`	figure style
`plotset`	options for plot style
`scaleoverview`	set the scale overview rectangle
`scalesync`	set scale synchronization between subplots
`sqguicmd`	execute a Sysquake GUI command
`sqselect`	select the specified subplots in the current SQ file instance

use statement outside blocks of functions (same effect as inside)
_kz and _dz (mouse displacements as complex numbers)
line comments beginning with a single percent character are supported in SQ files
stems style for 2D and 3D plots ('t')
scale pixel (fixed unit scale)
named argument id
named arguments as an alternative for options set with responseset, fontset and dialog
alternative y axis for 2D plots with new function altscale (with an alternative axis, the third argument passed to label is the label of the alternative y axis)
image: support for uint16
line and line3 where the line is defined by a vector and a point
in SQ files, assignments in variable declarations for initial value or make
in the command window, typing the first characters of a command restrict the search in the command history
more style options with plotset or named arguments
new zoom commands available in sqguicmd
scale synchronization between subplots
LaTeX equations in math
scale overview (separate subplot showing a larger area and the current scale with a gray rectangle)
function sqcurrentlanguage can change the current language
arbitrary expressions in handler declarations
single value in _xdata for input and output to public handlers

Minor changes

cancel(false) in the mouseover handler prevents figure redrawing
rlocus with output argument to get list of branches
in handler declarations, mixing a parenthesis and a bracket around output arguments is now flagged as an error (e.g. (a,b]=fun(c) isn't allowed; (a,b)=fun(c) and [a,b]=fun(c) are)
the default scale is between -1 and 1; for infinitely thin objects (isolated vertical or horizontal lines, points, or text), between -1 and +1 around them (plot(2,3,'x') draws a cross at the center of the figure)
default font size value returned by fontset is empty, because the default value actually used is 10 for text and 12 for math
better error message upon SQ files loading
support for ISO Latin 1 characters in PDF files
when a circular dependence error is detected for make handlers, relevant variables are listed
legends aren't displayed when there isn't enough room in the figure frame
drawnow with an input argument
on Mac OS X and in EPS, PDF and SVG files, frames and ticks are drawn with miter corners and butt ends instead of round ones
color 'g' is changed from RGB [0,1,0] to [0,0.5,0] (which corresponds to CSS color names)
multiple options in plotoption
improved Bode diagrams with linear scale for systems with an integrator

Bug fixes

with a style argument, polar failed silently; fixed
colors specified for area were reversed; fixed
area plot produced an _ix offset by 1; fixed
Shift along x axis of figures with equal scale didn't preserve the scale along y axis; fixed
functions defined in SQ files can be called directly from the command window, as in Sysquake 1
legend doesn't display anything anymore when the first argument is the empty string
reloading SQ files sometimes resulted in corrupted instances or to crashes; fixed
in free layout mode with a single unselected subplot, the figure was selected in the Figure menu, which was misleading (selected an entry adds a new figure without changing the first one); fixed
dinitial was delayed by one sample period; fixed
grids with solid thick line style were displayed with normal line width; fixed
grids with style 'K' were displayed with the default grid color; fixed
lsim or dlsim with a transfer function with a numerator and a denominator of the same degree didn't produce the correct value when the input had a step at t=0; fixed
idle handler suspended when editing a textfield
contour with multiple styles fixed

Windows

Command history saved and restored across application launch, and menu Edit>Clear Command History to clear it
applications created with Sysquake Application Builder couldn't be opened successfully if their full path contained non-ascii characters; fixed
Reload didn't call the terminate handler; fixed

Mac OS X

when trying to run an SQ file from an editor window, no error message error was displayed in case of error; fixed
maximum amount of memory increased from 1000 MB to 2047 MB
changing the manipulation mode with key 1-5 without the Command key didn't update the toolbar; fixed
Sysquake Application Builder and the applications it creates are native Intel applications (don't run anymore on Mac PowerPC)
terminate handlers were executed only upon application exit; now they're executed when the window is closed
SQ and SQD files couldn't weren't recognized when dragged onto Sysquake icons in the Finder; fixed
Maximum amount of memory in Preferences made larger (250 GB)

GNU/Linux

LME threads (threadnew etc.)
drawnow
new window icons
in Layout menu, wrong checkmarks were displayed in Free mode; fixed

SQ files

everywhere: id passed as named argument
everywhere: not menu handler replaced by the tilde operator

Sysquake 4.1

New features

based on LME 5.1
function sqcurrentlanguage to retrieve the current language
graphics export to PDF
extension declaration in SQ files (used by Sysquake Application Builder, ignored by other applications)
split into Sysquake Pro (previously known as Sysquake) and Sysquake (no extension and rpc, distributed without Sysquake Application Builder)

Minor changes

nthroot (real nth root)

Bug fixes

scalefactor with a 2- or 3-element vector didn't work correctly; fixed
no more warning when SQ File Possible Warnings is enabled and functions are declared with varargin or varargout

SQ files

image: bilinear interpolation with interpn
image: interpolation with fixed scale

Windows

Preference to set the font of the command window

Mac OS X

"Free" layout menu item added to Sysquake Application Builder and the application it creates

GNU/Linux

menu Close, Command Window, Open Other, Preferences and About in figure windows

Sysquake Application Builder

support for extensions

Sysquake 4.0.1

New features

based on LME 5.0.1

Bug fixes

lsim delayed the output when a time span was specified with scale; fixed
subplots with empty subplots didn't discard the frame of the figure which was removed; fixed

Mac OS X

the menu item separator was not removed correctly when needed before Copy As or Paste As; fixed
when an SQ file was reloaded, the window title was not updated; fixed

GNU/Linux

a warning was written in the console when dialog was called without edit field; fixed

Sysquake Application Builder

includes Lapack functions

Sysquake 4.0

New features

based on LME 5.0
new libraries
new 2D graphical funtions area, polar, activeregion, pcolor, colormap
in contour, support for filled style
3D graphics
new 3D graphical functions plot3, plotpoly, line3, mesh, surf, daspect, contour3
function scalefactor uses a vector of three elements
styled text and hyperlinks in command window (conversion from Creole markup for output to fd=4)
styled text with Creole markup in version and help blocks
function fd=textoutputopen(title,markup=false) to create a text window where one can write raw text or text with Creole markup
editable title, version and help in Sysquake
basic support for multiple languages
support for URL in paths (functions defined in libraries obtained from URL are executed in a sandbox)

Minor changes

plot now replicates x or y with one row or one column to match the size of the other argument

Windows

Unicode (UTF-8)

Mac OS X

search field in command window toolbar for lookfor
Sysquake Application Builder: detailed error message upon save error

Sysquake 3.6.1

Bug fixes

lsim didn's always produced correct output when called without a graphical context; fixed

Sysquake 3.6

New features

based on LME 4.7
charset conversion from ISO-Latin-1 or MacOSRoman (as specified in a special comment in the first or second line of lml, sq or sqd files) to UTF-8 on platforms which use Unicode
optional initial state for lsim and dlsim
optional range in responseset, used to specify the time range for step, impulse, lsim, initial, and their digital equivalents; and the frequency range for nyquist, nichols, bodemag bodephase, sigma, and their digital equivalents

Minor changes

new style ' ' for invisible graphics
rlocus can draw the root locus of nonproper transfer functions
in lsim, argument tOnly is replaced with the more general option structure created by responseset
Delay field of options taken into account by lsim

Bug fixes

_enable and _checkmark didn't work correctly when there were variables which contained objects; fixed
contour with an empty third argument calculates default values for the levels, as documented
dialog with too few output arguments threw error "too many output arguments"; fixed
rlocus cropped branches too easily; improved
rlocus with branches having points at infinity weren't displayed correctly; fixed
dlsim produced a shifted response when the time span did not start at t=0; fixed
idle handler is suspended when the user clicks popupmenu controls to avoid redraws and menu blinking

Windows

the window title is the SQ file title instead of the SQ file name, and "Untitled" isn't displayed anymore when the state hasn't been saved as an SQD file
in resize handler, _width and _height were too large; fixed

Mac OS X

images weren't always copied or printed correctly; fixed

Sysquake 3.5

New features

based on LME 4.6
support for scroll wheels and scroll balls in figures
option to remove subplot margin (command plotoption nomargin and menu Figure>Options>Margin)
new SQ file keyword userinterface
new resize handler (called when the figure window is resized) with new standard variables _width and _height (also supported as input by init handlers)
multiple "Settings" menus with beginmenu/endmenu (for Sysquake only, not Sysquake LE)
new options for plotoption to place the legend in another corner, and support for dragging legends to other corners
in mousedrag and mouseover handlers, frequency of Nyquist and Nichols diagrams corresponding to the mouse position can be retrieved in _q
new function responseset to create an option argument to specify a time delay in nyquist, nichols, bodephase, step, and impulse; and to span negative frequencies in nyquist, nichols, dnyquist, and dnichols
in keydown handlers, cursor keys are named 'left', 'right', 'up', 'down'
Interaction from other applications with OLE on Windows and XML-RPC on Mac OS X and GNU/Linux, and SysquakeLink (Java package)

Minor changes

SQ files with missing endsubmenu are rejected
the Settings menu has been removed from the contextual menu
status messages set with _msg are truncated at the first linefeed or carriage return character, if any
more labels in graphics
lsim and dlsim accept state-space models without output (empty C and D)
style 'h(...)' supports abbreviated colors with three hexadecimal digits in addition to 24-bit RGB colors specified with six hexadecimal digits
line([a1,a2],b,style) with fill style ('f') fills the area a1*x+a2*y<=b

Bug fixes

in zoom, zoom x and shift mode, buttons and menus weren't handled correctly; fixed
SQ File Possible Error Warnings sometimes didn't evaluate correctly the number of arguments declared in handlers; fixed
plot(x,[]) or plot([],y) threw an incompatible size error; fixed (this can be useful when x or y is a vector and the other argument can be an array with an unknown number of rows which may be null)
with dB scale, coordinates and labels could collide; fixed
cancel couldn't be used in dragout handlers; fixed

GNU/Linux

first release

Windows

improved preferences (dialog boxes, options to suppress the display of messages written by extensions at startup, to disable extensions, to specify an additional directory to load extensions from)
in Sysquake LE, Save and Save As didn't always work correctly; fixed

Mac OS X

universal application for Sysquake and Sysquake LE, separate versions for PowerPC and Intel for Sysquake Application Builder and applications it creates
dialog without text field always returned true; fixed
in a few functions such as label and legend, strings with unicode characters larger than 127 were truncated; fixed
memory leak when an SQ file instance window was closed; fixed
menu "Reload", "Reset Data", and "Dump Data" weren't disabled for the Figure window; fixed
display format set with format is saved and restored
XML-RPC server to control Sysquake remotely (options are located in Sysquake>Preferences>Extensions)
in Command window, colors for stderr and prompts (can be disabled in Sysquake>Preferences>Graphics)
main figure window wasn't restored correctly after it had been closed; fixed
bar or barh with logarithmic scale could crash Sysquake; fixed
text editor unifies end-of-line character sequences (LF, CR or CRLF) and has an option to change them in the Save dialog

Sysquake Application Builder

in Windows, the version of the SQ file has been moved to the About window (like on Macintosh) and the menu "About SQ File" has been removed

SQ files

MPT.sq: labels
MPT.sq: boundary for higher risks (without short selling) wasn't always correct; fixed
MPT.sq: constant definitions for graphical object identifiers and other constants, use of scalefactor, other minor code improvements

Sysquake 3.1.2

New features

based on LME 4.5.1
new style in plot to have arrows
second output argument in scale
multiple values in textfield

Minor changes

the sampling rate chosen by lsim is increased up to a factor 5 to match the input
support for a specific graphical object ID in dragin and dragout handler declarations

Bug fixes

discrete-time time responses with symbols weren't displayed correctly when the sample at t=0 wasn't visible; fixed
the end of embedded files (with keyword embeddedfile in SQ files) encoded with base64 but not padded with = characters (i.e. whose encoded size was a multiple of four characters) wasn't detected correctly; fixed
lookfor crashed when libraries were scanned; fixed

Windows

support for Firefox to display the online user manual
graphics with screen coordinates way outside the window were extremely slow to redraw; fixed

Mac OS X

the figure window wasn't redisplayed correctly when it was resized; fixed
fopen with an empty path prevented Sysquake from executing code; fixed

Sysquake Application Builder

in Windows, new menu View>Output Window

SQ files

RST_ct.sq, waves.sq, triangul.sq, triangle.sq, approx.sq: constant definitions for graphical object identifiers and other constants

Sysquake 3.1.1

Windows

Sysquake could crash in demo mode (without registration key file); fixed
Sysquake didn't always display the main window at startup; fixed

Sysquake 3.1

New features

See also release notes for extensions and libraries.

based on LME 4.5
new keywords define and _auto in SQ files (constant definitions, also visible in LME)
handlers for specific graphical object ID, to have multiple simple handlers instead of large, complicated handlers with a big switch statement
new keyword publichandler in SQ files (handlers which can be called from another context in Sysquake, such as threads or other SQ file instances), and new functions sqcall, sqcurrentinstance, sqinstances, and sqinstancetitle
textfield (new control for editing numerical values in figures of sliders and buttons)
quiver

Minor changes

lsim accepts row vectors for u for all single-input systems, including state-space
no more error message when a function is not defined after having loaded an SQ file (this is not necessarily an error if a method is defined)
when a handler takes more than 0.5 second to execute, visual feedback is displayed at the bottom of the window
in bar and barh, colors have been reordered for aesthetics reasons
graphics functions used with output arguments, such as nyquist or lsim, can now be used in any handler
lsim has an option to produce output only at the specified time instants
new style '+' for graphics
phase in bodephase, bodephase, nichols, and dnichols is unwrapped from an angle as close to -pi/2 as possible
line now accepts an empty second argument; nothing is drawn (this permits to draw a set of vertical lines with line([1,0],X) without testing whether X is empty)

Bug fixes

label(xstr, ystr) displayed ystr for both x and y axis; fixed
popup menus weren't popped correctly unless they were in the last figure (bottom right); fixed
in some cases, getting the next command in the history caused an out-of-memory error or a crash; fixed
lsim gave an error for state-space systems of order zero; fixed
lsim with a zero-order transfer function didn't give the correct result; fixed
lsim didn't work correctly outside the specified range of time (with an horizontal scale span larger than the time specified for the input); fixed
sigma didn't balance correctly systems with multiple inputs; fixed
bodemag, bodephase, dbodemag, dbodephase, sigma, and dsigma with a state-space model used only the first style; fixed
on some platforms, bodephase and nichols with NaN arguments froze the application; fixed
on some platforms, NaN in graphics caused crashes; now NaN values are skipped
in EPS files, the correct font metrics are used
init handlers of SQ files without any figure weren't executed; fixed
dnyquist didn't always produce a correct plot for systems with an integrator; fixed
dlsim didn't produce the correct result when the first coefficient of the denominator wasn't 1; fixed
zoom out wasn't always centered correctly; fixed
metric information of fonts in EPS files has been improved
rlocus could crash with numerators like [0,0]; fixed
plot skips inf values (in addition to nan) to avoid crashes on platforms which don't support them

Sysquake Application Builder

new menu entry "Check Undefined Functions"
all functions of libraries weren't included in the generated application when they weren't called in Sysquake Application Builder; fixed

Windows

tic and toc use the CPU time instead of the real time to permit more meaningful timings (CPU time is the sum of user time and kernel time, as reported by system function GetProcessTime)
the command window wasn't created when Sysquake was opened by double-clicking an SQ file; fixed
Hiding the Command window with the menu File/Close and showing it again crashed; fixed
clc didn't exist in applications created by Sysquake Application Builder (there is no output window); now it does to support SQ files which use text output for debugging purposes
Sysquake Application Builder ignored keydown handlers; fixed
applications created by Sysquake Application Builder have copy, printing support, contextual menus, and menu Figure/Options/Legend
SQ scripts weren't updated correctly with menu File/Reload from the source code window; fixed
new "Maximize SQ File Windows" preference to maximize the window of SQ files when they're opened
the maximized state of the main window is remembered

Mac OS X

new entry for http://www.calerga.com in the Help menu
memory preferences weren't restored correctly; fixed
menu "Save As" for the command window
Sysquake Register didn't create the folder Calerga in ~/Library when it didn't exist; fixed
applications created by Sysquake App Builder could open SQ and SQD files; fixed
support for dash patterns
in addition to /Library/Calerga and ~/Library/Calerga, Sysquake also searches SQ_Reg.key in the same folder as itself
new preference to load extensions specified separately
the service "Evaluate Expression" sometimes produced garbage when the result had multiple lines; fixed
the executable inside Sysquake package can be run without GUI (in a terminal, type something like '/Application/Sysquake 3.1/Sysquake.app/Contents/MacOS/Sysquake' --nococoa; argument --help given alone will display other options)
image with zero-order interpolation of pixels displayed misplaced pixels with white horizontal lines; fixed
drawnow wasn't implemented; fixed
on Mac OS 10.3 and later, extensions in save dialogs for .sq, .sqd, .eps and .app files can be hidden
in command window, new toolbar button to toggle the history drawer
the search string is shared with other applications which support it
Sysquake Application Builder didn't save correctly to applications which already existed (the result run correctly, but was too large); fixed
Sysquake Application Builder didn't accept files whose name contained non-ASCII characters; fixed
closing the window of an application created with Sysquake Application Builder now terminates it
preference "Other" in "Extension folder" didn't work; fixed
the cursor wasn't always updated correctly; fixed
selecting a submenu title could crash Sysquake; fixed
printing a figure now scales the figure to fit the page size, keeping the window proportions
subplots didn't handle correctly names with non-ASCII characters; fixed
the menu entry Window/Command Window wasn't updated correctly when the command window was closed; fixed
SQ scripts weren't updated correctly with menu File/Reload from the source code window; fixed

SQ files

PID_ct.sq, PID_dt.sq, RST_ct.sq, RST_dt.sq: all step and ramp responses between reference (set point), input disturbance, or output disturbance; and system input or output, are implemented
potential.sq: quiver plot
filter.sq: elliptic filters (all filters are now designed with the library filter.lml)
triangul.sq: based on built-in LME functions delaunay and voronoi, numerically better
triangul.sq: Voronoi regions are drawn correctly even far away from the set of points
PID_ct.sq: the sign of kp cannot be changed anymore in the root locus
PID_dt.sq: controller coefficients in the dialog box take the sampling period into account
PID_dt.sq: derivative action filtering using N is taken into account

`_v`	value of SQ variables
`progress`	computation progress
`sqfilepath`	path of SQ file
`subplotstyle`	subplot style
`tickformat`	subplot tick format