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  • Existence of matrix to compress
  • Managing errors
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Stored procedures
Compresses the memory footprint occupied by a matrix.
Note: The compression is required when you handle a large matrix onto which several calculations have been made. If this matrix contains several null columns and/or rows, the compression is used to significantly reduce the memory footprint of matrix.
Versions 18 and later
Universal Windows 10 App This function is now available in Windows Store apps mode.
New in version 18
Universal Windows 10 App This function is now available in Windows Store apps mode.
Universal Windows 10 App This function is now available in Windows Store apps mode.
Versions 19 and later
iPhone/iPad This function is now available for the iPhone/iPad applications.
New in version 19
iPhone/iPad This function is now available for the iPhone/iPad applications.
iPhone/iPad This function is now available for the iPhone/iPad applications.
Versions 21 and later
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
New in version 21
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Versions 23 and later
Android Widget This function is now available in Android Widget mode.
Android This function is now available for the Android applications.
Java This function is now available for the Java applications.
New in version 23
Android Widget This function is now available in Android Widget mode.
Android This function is now available for the Android applications.
Java This function is now available for the Java applications.
Android Widget This function is now available in Android Widget mode.
Android This function is now available for the Android applications.
Java This function is now available for the Java applications.
// Compress a matrix
MatStack("MyMatrix")
Syntax
MatStack(<Matrix Name>)
<Matrix Name>: Character string (with quotes)
Name of matrix to compress, defined by MatCreate.
Remarks

Existence of matrix to compress

The matrix existence is not checked. To check the matrix existence, use MatExist.

Managing errors

Caution: MatStack returns no result. To find out whether errors have been generated by the compression, use MatError on this matrix. To find out the error details, use ErrorInfo associated with the errMessage constant.
Components
WINDEVWEBDEV - Server codeReports and Queries wd230mat.dll
Windows Mobile wp230mat.dll
Java wd230java.jar
Linux wd230mat.so
Android wd230android.jar
Minimum required version
  • Version 9
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