1-7-3

Variables and Folders

IVariable Data Types

ClassPad variables support a number of data types. The type of data assigned to a variable is indicated by a data type name. Data type names are shown on the Variable Manager variable list, and on the Select Data dialog box that appears when you are specifying a variable in any ClassPad application. The following table lists all of the variable data type names and explains the meaning of each.

Data Type NameData Type

 

 

EXPRReal number, complex number or expression data
STRString data

 

 

LISTList data created using the Statistics application, Main application, etc.
MATMatrix data created using the Main application, etc.
PRGM*General program
EXE*Edit prohibited program

 

 

TEXT*Text data
FUNC*User-defined function

 

 

PICT*Image data

 

• ClassPad image data includes graph image data saved using the

 

Store function, image data captured using the Presentation

 

application, and picture data transferred from the FA-CP1.

 

 

GMEM*Graph memory data saved using the Graph & Table application

 

• For more information, see “Saving Graph Editor Data to Graph

 

Memory” on page 3-3-14.

 

 

GEO*Geometry application data

 

 

MEM*General-purpose data

 

 

OTHRData other than that described above

 

 

* Protected variable types

Some data types are protected. A variable whose data type is protected cannot be overwritten with another variable, which protects variable contents from being inadvertently altered. Data types whose names are marked with an asterisk in the above table are protected.

Tip

Note that whether or not a data type is protected is determined by the system. You cannot change the protection status of a data type.

Even when a variable is a protected data type, you can rename, delete, or move it. To disable these operations, you need to lock the variable. For more information, see “Locking a Variable or Folder” on page 1-7-10.

The elements of the LIST data type can contain EXPR or STR type data only. The elements of the MAT data type can contain EXPR type data only.

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