Scilab Cheat Sheet by BiONiCOP

input

user input.

example:

x=inpu­t("How many iterat­ion­s?")

matrix

example:

[1 3 4 6;5 6 7 8]

',' means row & ';' means column

plot

used to create plots in the plane.

modulo

syntax:

x (mod y)

zeros

matrix made of zeros.

syntax:

zeros(x,y)

Matrix of size x × y

function

syntax:

function [output arguments] = functi­onn­ame­(input arguments) 
instructions
 endfun­ction

plot2d

plots a set of 2D curves.

plot2d3

It is the same as plot2d but curves are plotted using "­ver­tical bars".

fplot2d

2D function plot

subplot()

plots multiple graphs on a single graphic window.

paramf­­plot2d

animated plot of a 2D parame­­trized curve.

deff

It is an embedded scilab function for defining custom functions.
The deff() function receives 2 argume­nts­(both strings).
Each string contains parts of the function definition which are going to be evaluate by Scilab and turn into instru­ctions.

example:

deff('­y=f­(x)­','­y=s­qrt(x.2 - 5*x + 6)')

for: f(x)=√x2 − 5x + 6

mopen

opens a file in scilab.

syntax:

mopen(­SCI­+'/­fil­e.txt', 'rt')

mgetl

reads lines from an text file.

syntax:

txt = mgetl(­fil­e_desc [,m])

linspace

It generates a row vector of 'n' equally spaced values ranging exactly from "­x1" to "­x2".
in short, vector of size n whose components are equidistant.

isoview

This property is used to have isometric scales on the x, y and z axes (for exemple to make the display of the curve sin(x) versus cos(x) be a circle not an ellipse).