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Session 14: Data Structures [June 12, 2011, 1:02 p.m.]


In this session you will learn the following:

  1. User defined data structures in Scilab
  2. Creating and using struct, cell, list, tlist and mlist


User defined data structures offer the programmer the facility to tailor data suited to represent and program solutions to specific problems. Most data structures are an agglomeration of basic data types and previously defined user defined data types.

Scilab Data Types

Data types available in Scilab can be listed through the online help on type() and typeof(). The data types available in Scilab are:

Data Type Object Type Description
1 constant real or complex constant matrix
2 polynomial polynomial matrix
4 boolean boolean matrix
5 sparse sparse matrix
6 boolean sparse sparse boolean matrix
8 int8, int16 or int32 matrix of integers stored in 1, 2 or 4 bytes
9 handle matrix of graphic handles
10 string matrix of character strings
11   un-compiled function (Scilab code)
13 function compiled function (Scilab code)
14 library function library
15 list list
16 tlist typed list (tlist)
17 mlist matrix oriented typed list (mlist)
128 pointer pointer
129 size implicit size implicit polynomial used for indexing
130 fptr Scilab intrinsic (C or Fortran code)

The following functions are used to determine data types:

  1. Function type(x) returns the type of a Scilab variable x.
  2. Function typeof(x) returns a string indicating the type of Scilab object x.

Data Structure - struct