mlSetVariable (Function)

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mlSetVariable (Function)

In french: mlEcritVariable

Writes the value of a variable for the MATLAB session.

Versions 24 and later

This function is now available for WEBDEV sites in Windows.

New in version 24

This function is now available for WEBDEV sites in Windows.

Example

gnSessionID is int
gnSessionID = mlInitialize()

IF gnSessionID = -1 THEN
Error(ErrorInfo(errFullDetails))
END

// Code of BTN_Create_Variables button
aParameter is array of 1 real = [4]
aResult is array of 1 by 1 real = [[123]]

IF NOT mlSetVariable(gnSessionID, "i", aParameter) THEN
Error("Failure writing the variable")
RETURN
END

sCodeToRun is string = "myRoot = sqrt(i)"
EDT_Result = mlExecute(gnSessionID, sCodeToRun)

aResult = mlGetVariable(gnSessionID, "myRoot")
IF ErrorOccurred THEN
Trace("Error: " + ErrorInfo())
END

Trace("Root = " + aResult[1,1])

Trace("List of variables before deletion: " + mlListVariable(gnSessionID))

mlDeleteVariable(gnSessionID, "i")
mlDeleteVariable(gnSessionID, "myRoot")

Trace("List of variables after deletion: " + mlListVariable(gnSessionID))

Syntax

<Result> = mlSetVariable(<Session identifier> , <Variable name> , <Value>)

<Result>: Boolean

True if the variable was modified,
False otherwise. The ErrorOccurred variable is set to True if an error occurred. To find out the name of the error, use the function ErrorInfo with the constant errMessage.

<Session identifier>: Integer

Identifier of MATLAB session. This identifier is returned by mlInitialize.

<Variable name>: Character string (with quotes)

Name of the variable to write.

<Value>: Array of integers, reals, ...

Value of variable.

Remarks

Supported types

The supported types are:

signed and unsigned integers on 1, 2, 4 and 8,
reals on 4 and 8,
booleans,
characters.

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