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loop

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drfg2008

loop

I'm looking for a syntax similar to that below (which does not work).

vector v(50).
vector w(50).
loop #item = 1 to 50.
+ compute w(#item) = v(#item).
end loop.
exe.

(as a short form for:

compute v1 = w1.
compute v2 = w2.
compute v3 = w3.

(no python, that would be easy)

Dr. Frank Gaeth

Vlad Lopez

Re: loop

Hi Frank,

I tested the syntax below and it worked smoothly for 3 variables. It should work for more than 3 variables.

vector r(3,f2).
exe.
vector v=v1 to v3 /r=r1 to r3.
loop #i=1 to 3.
comp r(#i)=v(#i).
end loop.
exe.

vlad

On Wed, Dec 14, 2011 at 9:13 AM, drfg2008 <[hidden email]> wrote:

I'm looking for a syntax similar to that below (which does not work).

vector v(50).
vector w(50).
loop #item = 1 to 50.
+ compute w(#item) = v(#item).
end loop.
exe.

(as a short form for:

compute v1 = w1.
compute v2 = w2.
compute v3 = w3.

(no python, that would be easy)

-----
Dr. Frank Gaeth
FU-Berlin

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Art Kendall

Re: loop

In reply to this post by drfg2008

is vector v populated?

What do you mean it does not work?
What precedes the snippet you posted?

this works on my system.
new file.
input program.
   vector x (3,f3).
   loop id = 1 to 5.
      loop #p = 1 to 3.
         compute x(#p) = rnd(rv.normal(50,10)).
      end loop.
      end case.
   end loop.
   end file.
end input program.
do repeat varx = x1 to x3/varv = v1 to v3.
end repeat.
compute varv=varx.
vector w(3,f3).
loop #item = 1 to 3.
   + compute w(#item) = v(#item).
end loop.
list.

Art Kendall
Social Research Consultants

On 12/14/2011 12:13 PM, drfg2008 wrote:

I'm looking for a syntax similar to that below (which does not work).

vector v(50).
vector w(50).
loop #item = 1 to 50.
+ compute w(#item) = v(#item).
end loop.
exe.

(as a short form for:

compute v1 = w1.
compute v2 = w2.
compute v3 = w3.

(no python, that would be easy)

-----
Dr. Frank Gaeth
FU-Berlin

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Art Kendall
Social Research Consultants

Ruben Geert van den Berg

Re: loop

Dear all,

I think the short notation ("vector v(30).") only works as long as no variables v1, v2, ... , v30 already exist. In order to copy 30 existing variables (v1-v30) as (w1-w30) you could use

vector v=v1 to v30.

vector w(30).

loop #i = 1 to 30.

compute w(#item) = v(#item).

end loop.

exe.

or easier

do repeat v=v1 to v30/w=w1 to w30.

comp w=v.

end repeat.

exe.

Date: Wed, 14 Dec 2011 14:24:52 -0500
From: [hidden email]
Subject: Re: loop
To: [hidden email]

is vector v populated?

What do you mean it does not work?
What precedes the snippet you posted?

this works on my system.
new file.
input program.
   vector x (3,f3).
   loop id = 1 to 5.
      loop #p = 1 to 3.
         compute x(#p) = rnd(rv.normal(50,10)).
      end loop.
      end case.
   end loop.
   end file.
end input program.
do repeat varx = x1 to x3/varv = v1 to v3.
end repeat.
compute varv=varx.
vector w(3,f3).
loop #item = 1 to 3.
   + compute w(#item) = v(#item).
end loop.
list.

Art Kendall
Social Research Consultants

On 12/14/2011 12:13 PM, drfg2008 wrote:

I'm looking for a syntax similar to that below (which does not work).

vector v(50).
vector w(50).
loop #item = 1 to 50.
+ compute w(#item) = v(#item).
end loop.
exe.

(as a short form for:

compute v1 = w1.
compute v2 = w2.
compute v3 = w3.

(no python, that would be easy)

-----
Dr. Frank Gaeth
FU-Berlin

--
View this message in context: http://spssx-discussion.1045642.n5.nabble.com/loop-tp5075099p5075099.html
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drfg2008

Re: loop

Dear all,

thanks for your help!

The shortest syntax seems to be

do repeat v=v1 to v30/w=w1 to w30.
comp w=v.
end repeat.
exe.

It works (couldn't imagine to do a loop within one row)

Dr. Frank Gaeth

David Marso

Re: loop

Administrator

Actually (not to be pedantic) if *ALL* you wish to achieve is copying a set of variables, the shortest syntax *IS* (probably also more efficient WRT computational resources)...

RECODE v1 TO v30 (ELSE=COPY) into w1 to w30.

You will find with experience that LOOP.. END LOOP is in many ways, *much* more flexible than DO REPEAT.

drfg2008 wrote

Dear all,

thanks for your help!

The shortest syntax seems to be

do repeat v=v1 to v30/w=w1 to w30.
comp w=v.
end repeat.
exe.

It works (couldn't imagine to do a loop within one row)

Please reply to the list and not to my personal email.
Those desiring my consulting or training services please feel free to email me.
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Vlad Lopez

Re: loop

In reply to this post by drfg2008

This untested line may be shortest, Frank.

recode v1 to v50 (else=copy) into w1 to w50.

Best.

vlad

On Thu, Dec 15, 2011 at 12:08 AM, drfg2008 <[hidden email]> wrote:

Dear all,

thanks for your help!

The shortest syntax seems to be

do repeat v=v1 to v30/w=w1 to w30.
comp w=v.
end repeat.
exe.

It works (couldn't imagine to do a loop within one row)

-----
Dr. Frank Gaeth
FU-Berlin

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drfg2008

Re: loop

yep, it works. That's short.

Dr. Frank Gaeth