delete values -matrix

[drfg2008]

on an other SPSS-platform some expert (desperately) needs a syntax to delete a lower triangular matrix. The matrix is m=n=100. The main diagonal only consists of 1,1, ... and the lower triangular matrix mirrors the upper one (as far as I understand).

I only find a solution in python, but python obviously seems not to be installed on that expert's computer. My non-python syntax-trials delete everything but the right values and I gave up.

I'm sure he would appreciate a solution. (Couldn't find any myself)

Thanks

[Marta Garcia-Granero]

Could you please give more details?. I don't fully understand what you
try to do. Maybe if you give a small example (a 5x5 matrix) with the
initial and final states...

Marta

El 26/08/2011 17:29, drfg2008 escribió:

> on an other SPSS-platform some expert (desperately) needs a syntax to delete
> a lower triangular matrix. The matrix is m=n=100. The main diagonal only
> consists of 1,1, ... and the lower triangular matrix mirrors the upper one
> (as far as I understand).
>
> I only find a solution in python, but python obviously seems not to be
> installed on that expert's computer. My non-python syntax-trials delete
> everything but the right values and I gave up.
>
> I'm sure he would appreciate a solution. (Couldn't find any myself)
>
> Thanks
>
> -----
> Dr. Frank Gaeth
> FU-Berlin
>
> --
> View this message in context: http://spssx-discussion.1045642.n5.nabble.com/delete-values-matrix-tp4738401p4738401.html
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[drfg2008]

Example:

1 8 9 7 4
8 1 3 2 8
9 3 1 7 7
7 2 7 1 8
4 8 7 8 1


All values in the lower triangular matrix shall be set on missing or 0.

1
8 1
9 3 1
7 2 7 1
4 8 7 8 1

nothing complex actually (if m>n).

cheers

[David Marso]

Frank,
Say Variables are called V001 TO V100.
COMPUTE #=$CASENUM.
VECTOR V=V001 TO V100.
LOOP ##=#+1 TO 100.
+  COMPUTE V(##)=$SYSMIS.
END LOOP.
EXE.
HTH, David
--

drfg2008 wrote

Example:

1 8 9 7 4
8 1 3 2 8
9 3 1 7 7
7 2 7 1 8
4 8 7 8 1


All values in the lower triangular matrix shall be set on missing or 0.

1
8 1
9 3 1
7 2 7 1
4 8 7 8 1

nothing complex actually (if m>n).

cheers

[drfg2008]

yes, it helps. Thanks David.

[drfg2008]

Hi David,

the 'expert' says thank you


"Absoluter Hammer.
Vielen Dank für deine Hilfe!
MEGA!"


(I find no propper English translation for that.)