• Matrix existence
• Matrix size
WINDEV
WEBDEV
WINDEV Mobile
Others
MatWrite (Function)
In French: MatEcrit
Writes an element into a matrix.
Versions 15 and later
This function is now available for the Android applications.
New in version 15
This function is now available for the Android applications.
This function is now available for the Android applications.
Versions 17 and later
This function is now available for the iPhone/iPad applications.
New in version 17
This function is now available for the iPhone/iPad applications.
This function is now available for the iPhone/iPad applications.
Versions 18 and later
This function is now available in Android Widget mode.
This function is now available in Windows Store apps mode.
New in version 18
This function is now available in Android Widget mode.
This function is now available in Windows Store apps mode.
This function is now available in Android Widget mode.
This function is now available in Windows Store apps mode.
Versions 21 and later
This function is now available in Universal Windows 10 App mode.
New in version 21
This function is now available in Universal Windows 10 App mode.
This function is now available in Universal Windows 10 App mode.
// Assign 6 to the element (row 2, column 2)
ResWrite = MatWrite("MyMatrix", 6, 2, 2)
Syntax
<Result> = MatWrite(<Matrix Name> , <Value> , <Element Row> , <Element Column>)
<Result>: Boolean
• True if the writing was performed,
• False otherwise. To find out the error details, use ErrorInfo associated with the errMessage constant.
<Matrix Name>: Character string
Name of the matrix to use, defined by MatCreate.
<Value>: Real
Value given to the specified element.
<Element Row>: Integer
Row of the element to initialize.
<Element Column>: Integer
Column of the element to initialize.
Remarks

Matrix existence

A matrix must exist before it can be filled. To check the existence of a matrix, use MatExist.

Matrix size

The matrix size is managed dynamically. If the coordinates (row and columns) of the element to insert into the matrix are greater than the matrix dimension (total width and total height of the matrix), the element is added at the specified position. In this case, the matrix is filled with zeros.
For example:
MatWrite("MyArchive", 9, 2, 4)
Related Examples:
 Unit examples (WINDEV): The Matrix functions [ + ] Using matrices with the WLanguage functions.This example, powered by WINDEV, is used to perform calculations on matrices: addition, multiplication, transposition, inversion...
 Unit examples (WINDEV Mobile): The Matrix functions [ + ] Using matrices with the WLanguage functions: addition, multiplication, transposition, inversion...
Components
wd230mat.dll
wp230mat.dll
wd230java.jar
wd230mat.so
wd230android.jar
Minimum required version
• Version 9