Saving Q Matrix in Singular Value Decomposition

[Atai Winkler-2]

Hi all

 

 

I wonder if somebody can help me with a matrix problem.

 

I am doing a Singular Value Decomposition (SVD) and I then want to recover the Q matrix. My syntax is:

 

*******************************************************

 

MATRIX.

 

GET lin_depd

  /VARIABLES int_MPAA_ABS TO int_manu_grp_Other_WS.

CALL SVD(lin_depd, U, Q, V).

 

SAVE {Q}

  /OUTFILE=*.

 

EXECUTE.

 

END MATRIX.

 

*******************************************************

 

The code works correctly, and the matrix Q is generated as an unnamed dataset. Now, from page 1077 (bottom right, not on PDF toolbar) of the Command Syntax Reference manual:

 

‘To save a matrix expression as the active dataset, specify an asterisk (*). If there is no active dataset, one will be created; if there is one, it is replaced by the saved matrices’.

 

So, I have put an * in the OUTFILE command in the syntax above. Unfortunately, the file with the Q matrix does not have a dataset name or a file name. So, my question is: how I can recover the dataset with the

matrix Q so that I can use it later?

 

Thank you.

 

 

Atai

 

 

Dr Atai Winkler
[hidden email]

 

 

 

 

===================== To manage your subscription to SPSSX-L, send a message to [hidden email] (not to SPSSX-L), with no body text except the command. To leave the list, send the command SIGNOFF SPSSX-L For a list of commands to manage subscriptions, send the command INFO REFCARD

[David Marso]

BEGIN DATA.
1 2 3 4 5 6 7 8 9
END DATA.
DATASET NAME raw.
MATRIX.
GET data /file * / variables a b c.
CALL SVD(data, U, Q, V).
SAVE Q / OUTFILE *.
END MATRIX.
LIST.

1. Give the initially active dataset a NAME.
2. FWIW: Get rid of the EXECUTE statement in the MATRIX block. It does NOT belong there!
HTH, Happy Friday!
---

Atai Winkler wrote

Hi all


I wonder if somebody can help me with a matrix problem.

I am doing a Singular Value Decomposition (SVD) and I then want to recover the Q matrix. My syntax is:

*******************************************************

MATRIX.

GET lin_depd
  /VARIABLES int_MPAA_ABS TO int_manu_grp_Other_WS.
CALL SVD(lin_depd, U, Q, V).

SAVE {Q}
  /OUTFILE=*.

EXECUTE.

END MATRIX.

*******************************************************

The code works correctly, and the matrix Q is generated as an unnamed dataset. Now, from page 1077 (bottom right, not on PDF toolbar) of the Command Syntax Reference manual:

‘To save a matrix expression as the active dataset, specify an asterisk (*). If there is no active dataset, one will be created; if there is one, it is replaced by the saved matrices’.

So, I have put an * in the OUTFILE command in the syntax above. Unfortunately, the file with the Q matrix does not have a dataset name or a file name. So, my question is: how I can recover the dataset with the
matrix Q so that I can use it later?

Thank you.


Atai


Dr Atai Winkler
[hidden email]





=====================
To manage your subscription to SPSSX-L, send a message to
[hidden email] (not to SPSSX-L), with no body text except the
command. To leave the list, send the command
SIGNOFF SPSSX-L
For a list of commands to manage subscriptions, send the command
INFO REFCARD