Scilab Online Help
5.5.0 - English

• Scilab Help
• Scilab
• Differential calculus, Integration
• Elementary Functions
• Linear Algebra
• Interpolation
• CACSD (Computer Aided Control Systems Design)
• Polynomials
• Signal Processing
• FFTW
• Special Functions
• Randlib
• ARnoldi PACKage (ARPACK binding)
• Statistics
• Sparse Matrix
• UMFPACK Interface (sparse)
• Optimization and Simulation
• Genetic Algorithms
• Simulated Annealing
• XML Management
• HDF5 Management
• Files : Input/Output functions
• Input/Output functions
• Graphics
• Graphics : exporting and printing
• GUI
• Data Structures
• Parameters
• Boolean
• Integers
• Strings
• Sound file handling
• Time and Date
• Output functions
• Xcos
• Spreadsheet
• Console
• History manager
• Matlab binary files I/O
• Matlab to Scilab Conversion Tips
• Compatibility Functions
• Advanced functions
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• Dynamic/incremental Link
• ATOMS
• Tcl/Tk Interface
• Text editor (Scinotes)
• UI Data
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• Parallel
• Modules manager
• Localization
• API Scilab
• call_scilab API (Scilab engine)
• Java Virtual Machine (JVM)
• Java from Scilab
• Java Interface
• Intersci
• Preferences
• Windows tools

Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
See the recommended documentation of this function

Scilab Help >> Scilab

Scilab

• Scilab keywords
  • ans — answer
  • backslash — (\) left matrix division.
  • brackets — ([,]) left and right brackets
  • colon — (:) colon operator
  • comma — (,) comma; instruction, argument separator
  • comments — (//) comments
  • comparison — comparison, relational operators
  • dollar — ($) last index
  • dot — (.) symbol
  • else — keyword in if-then-else and select-case-then-else
  • elseif — keyword in if-then-else
  • empty — ([]) empty matrix
  • end — end keyword
  • equal — (=) assignment , comparison, equal sign
  • extraction — matrix and list entry extraction
  • global — Define global variable
  • hat — (^) exponentiation
  • assignation — partial variable assignation
  • great — (>) greater than comparison
  • minus — (-) subtraction operator, sign changes
  • not — (~) logical not
  • parentheses — ( ) left and right parenthesis
  • percent — (%) special character
  • plus — (+) addition operator
  • power — (^,.^) power operation
  • quote — (') transpose operator, string delimiter
  • semicolon — (;) ending expression and row separator
  • slash — (/) right division and feed back
  • star — (*) multiplication operator
  • symbols — scilab operator names
  • tilde — (~) logical not
  • catch — beginning of catch block in try-catch control instruction
• Control flow
  • abort — interrupt evaluation.
  • break — keyword to interrupt loops
  • case — keyword used in statement "select"
  • continue — keyword to pass control to the next iteration of a loop
  • do — language keyword for loops
  • for — language keyword for loops
  • if — keyword for conditional execution
  • pause — pause mode, invoke keyboard
  • resume — return or resume execution and copy some local variables
  • return — return or resume execution and copy some local variables
  • select — select keyword
  • then — keyword in control flows 'if' and 'select'
  • while — while keyword
• Configuration
  • banner — shows Scilab banner
  • getdebuginfo — get information about Scilab to debug
  • getmemory — returns free and total system memory
  • getmodules — returns list of modules installed in Scilab
  • getos — return Operating System name and version
  • getscilabmode — returns scilab mode
  • getshell — returns current command interpreter.
  • getversion — get scilab and modules version information
  • gstacksize — set/get scilab global stack size
  • stacksize — set scilab stack size
  • ver — Version information for Scilab
  • with_javasci — Checks if Scilab has been built with the Java interface
  • with_macros_source — Checks if macros sources are installed
  • with_module — Checks if a Scilab module is installed
  • with_tk — Checks if Scilab has been built with TCL/TK
• Debugging
  • debug — Debugging level of Scilab internals
  • delbpt — delete breakpoints
  • dispbpt — display breakpoints
  • setbpt — set breakpoints
  • where — get current instruction calling tree
  • whereami — display current instruction calling tree
• Error handling
  • errcatch — error trapping
  • errclear — error clearing
  • error — error message
  • error_table — table of error messages
  • iserror — error occurrence test
  • lasterror — get last recorded error message
  • warning — warning messages
• Variables
  • Predefined variables
    • SCI — variable containing the value of the root path of Scilab.
    • SCIHOME — contains the path to preferences, history files of your Scilab session.
    • TMPDIR — temporary directory path.
    • home — Gives the user directory.
    • %e — Euler number.
    • %eps — epsilon (floating-point relative accuracy)
    • %f or %F — Boolean variable for false.
    • %i — imaginary unit
    • %inf — infinity
    • %nan — not-a-number
    • %pi — ratio of circle's circumference to its diameter
    • %s — A variable used to define polynomials.
    • %t or %T — Boolean variable for true.
    • %z — A variable used to define polynomials.
  • clear — kills variables
  • clearglobal — kills global variables
  • exists — checks variable existence
  • getvariablesonstack — get variable names on stack of scilab
  • isdef — checks variable existence
  • isglobal — check if a variable is global
  • names — Scilab names syntax
  • predef — variable protection
  • who — listing of variables
  • who_user — listing of user's variables
  • whos — listing of variables in long form
• exit — Ends the current Scilab session
• perl — Call Perl script using appropriate operating system executable. This function is obsolete.
• quit — Terminates Scilab or decreases the pause level
• scilab — Main script to start Scilab and miscellaneous tools (GNU/Linux, Unix and Mac OS X)
• startup — startup files

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