generating random letters

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generating random letters

Art Kendall
In response to a post on this list I started by trying to simulate data made up of single letters.
I am trying to generate random integers into what I recall as the ASCII values for A to Z. 65 to 90.
However, I cannot recall how to convert those values into letters.
compute below should look like
compute x(#p) = somefunction (RND(RV.UNIFORM(64.5,90.5)).

* cases and single letter  items.
new file.
input program.
   vector x (10,a1).
   loop id = 1 to 25.
      loop #p = 1 to 10.
         compute x(#p) =RND(RV.UNIFORM(64.5,90.5)).
      end loop.
      end case.
   end loop.
   end file.
end input program.


-- 
Art Kendall
Social Research Consultants
Art Kendall
Social Research Consultants
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Re: generating random letters

Andy W
Try the PIB string format. Example below.


**************************************************.
new file.
input program.
   vector x (10,F1.0).
   loop id = 1 to 25.
      loop #p = 1 to 10.
         compute x(#p) =RND(RV.UNIFORM(64.5,90.5)).        
      end loop.
      end case.
   end loop.
   end file.
end input program.
exe.

vector let(10,A1).
do repeat let = let1 to let10 /x = x1 to x10.
compute let = STRING(x,PIB).
end repeat.
exe.
**************************************************.
Andy W
apwheele@gmail.com
http://andrewpwheeler.wordpress.com/
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Re: generating random letters

Jon K Peck
In reply to this post by Art Kendall
data list list/n.
begin data
65
66
67
90
end data.
string s(a8).
compute s = string(n, pib2).
list.


Jon Peck (no "h") aka Kim
Senior Software Engineer, IBM
[hidden email]
phone: 720-342-5621




From:        Art Kendall <[hidden email]>
To:        [hidden email],
Date:        04/11/2013 06:44 AM
Subject:        [SPSSX-L] generating random letters
Sent by:        "SPSSX(r) Discussion" <[hidden email]>




In response to a post on this list I started by trying to simulate data made up of single letters.
I am trying to generate random integers into what I recall as the ASCII values for A to Z. 65 to 90.
However, I cannot recall how to convert those values into letters.
compute below should look like
compute x(#p) = somefunction (RND(RV.UNIFORM(64.5,90.5)).

* cases and single letter  items.
new file.
input program.
  vector x (10,a1).
  loop id = 1 to 25.
     loop #p = 1 to 10.
        compute x(#p) =RND(RV.UNIFORM(64.5,90.5)).
     end loop.
     end case.
  end loop.
  end file.
end input program.


--
Art Kendall
Social Research Consultants

Art Kendall
Social Research Consultants



View this message in context: generating random letters
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Automatic reply: generating random letters

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Re: generating random letters

David Marso
Administrator
In reply to this post by Art Kendall
I came up with the following but alas it doesn't work as expected ;-(
BUG!!!!! in MATRIX?
MATRIX.
PRINT {65:90} / FORMAT "PIB2".
COMPUTE X={65:90} .
PRINT X.
PRINT X  / FORMAT "PIB2".
END MATRIX.

Run MATRIX procedure:

{65:90}
 A

X
  65  66  67  68  69  70  71  72  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87  88  89  90

X
 A

------ END MATRIX -----

Art Kendall wrote
In response to a post on this list I
            started by trying to simulate data made up
              of single letters.
              I am trying to generate random integers into what I recall as
                    the ASCII values for A to Z. 65 to
                      90.
                      However, I cannot recall how to
                        convert those values into letters.
                        compute below
                            should look like
                            compute x(#p) = somefunction
                              (RND(RV.UNIFORM(64.5,90.5)).
                             
                            *
                                  cases and single letter  items.
                                new file.
                                input program.
                                   vector x (10,a1).
                                   loop id = 1 to 25.
                                      loop #p = 1 to 10.
                                         compute x(#p)
                                  =RND(RV.UNIFORM(64.5,90.5)).
                                      end loop.
                                      end case.
                                   end loop.
                                   end file.
                                end input program.
                             
                           
    --
Art Kendall
Social Research Consultants
Please reply to the list and not to my personal email.
Those desiring my consulting or training services please feel free to email me.
---
"Nolite dare sanctum canibus neque mittatis margaritas vestras ante porcos ne forte conculcent eas pedibus suis."
Cum es damnatorum possederunt porcos iens ut salire off sanguinum cliff in abyssum?"
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Re: generating random letters

David Marso
Administrator
Interesting:  If you transpose the vector it prints .
MATRIX.
PRINT T({65:90}) / FORMAT "PIB2".
END MATRIX.

David Marso wrote
I came up with the following but alas it doesn't work as expected ;-(
BUG!!!!! in MATRIX?
MATRIX.
PRINT {65:90} / FORMAT "PIB2".
COMPUTE X={65:90} .
PRINT X.
PRINT X  / FORMAT "PIB2".
END MATRIX.

Run MATRIX procedure:

{65:90}
 A

X
  65  66  67  68  69  70  71  72  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87  88  89  90

X
 A

------ END MATRIX -----

Art Kendall wrote
In response to a post on this list I
            started by trying to simulate data made up
              of single letters.
              I am trying to generate random integers into what I recall as
                    the ASCII values for A to Z. 65 to
                      90.
                      However, I cannot recall how to
                        convert those values into letters.
                        compute below
                            should look like
                            compute x(#p) = somefunction
                              (RND(RV.UNIFORM(64.5,90.5)).
                             
                            *
                                  cases and single letter  items.
                                new file.
                                input program.
                                   vector x (10,a1).
                                   loop id = 1 to 25.
                                      loop #p = 1 to 10.
                                         compute x(#p)
                                  =RND(RV.UNIFORM(64.5,90.5)).
                                      end loop.
                                      end case.
                                   end loop.
                                   end file.
                                end input program.
                             
                           
    --
Art Kendall
Social Research Consultants
Please reply to the list and not to my personal email.
Those desiring my consulting or training services please feel free to email me.
---
"Nolite dare sanctum canibus neque mittatis margaritas vestras ante porcos ne forte conculcent eas pedibus suis."
Cum es damnatorum possederunt porcos iens ut salire off sanguinum cliff in abyssum?"
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Re: generating random letters

Bruce Weaver
Administrator
Confirmed with my v20 running under Windoze.  In this modified version of David's syntax, only the second PRINT command prints the letters A to Z.  The other two just print A.

MATRIX.
PRINT {65:90} / FORMAT "PIB2".
PRINT T({65:90}) / FORMAT "PIB2".
PRINT T(T({65:90})) / FORMAT "PIB2".
END MATRIX.



David Marso wrote
Interesting:  If you transpose the vector it prints .
MATRIX.
PRINT T({65:90}) / FORMAT "PIB2".
END MATRIX.

David Marso wrote
I came up with the following but alas it doesn't work as expected ;-(
BUG!!!!! in MATRIX?
MATRIX.
PRINT {65:90} / FORMAT "PIB2".
COMPUTE X={65:90} .
PRINT X.
PRINT X  / FORMAT "PIB2".
END MATRIX.

Run MATRIX procedure:

{65:90}
 A

X
  65  66  67  68  69  70  71  72  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87  88  89  90

X
 A

------ END MATRIX -----

Art Kendall wrote
In response to a post on this list I
            started by trying to simulate data made up
              of single letters.
              I am trying to generate random integers into what I recall as
                    the ASCII values for A to Z. 65 to
                      90.
                      However, I cannot recall how to
                        convert those values into letters.
                        compute below
                            should look like
                            compute x(#p) = somefunction
                              (RND(RV.UNIFORM(64.5,90.5)).
                             
                            *
                                  cases and single letter  items.
                                new file.
                                input program.
                                   vector x (10,a1).
                                   loop id = 1 to 25.
                                      loop #p = 1 to 10.
                                         compute x(#p)
                                  =RND(RV.UNIFORM(64.5,90.5)).
                                      end loop.
                                      end case.
                                   end loop.
                                   end file.
                                end input program.
                             
                           
    --
Art Kendall
Social Research Consultants
--
Bruce Weaver
bweaver@lakeheadu.ca
http://sites.google.com/a/lakeheadu.ca/bweaver/

"When all else fails, RTFM."

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Re: generating random letters

Art Kendall
In reply to this post by David Marso
Jon, Andy, David
Thanks, I just could not remember PIB.

I posted example syntax using random letters.   in the post about reordering drug regimen.

The syntax is effective and readable.  It probably could be more efficient and generalizable.

Art Kendall
Social Research Consultants
On 4/11/2013 9:44 AM, David Marso [via SPSSX Discussion] wrote:
Interesting:  If you transpose the vector it prints .
MATRIX.
PRINT T({65:90}) / FORMAT "PIB2".
END MATRIX.

David Marso wrote
I came up with the following but alas it doesn't work as expected ;-(
BUG!!!!! in MATRIX?
MATRIX.
PRINT {65:90} / FORMAT "PIB2".
COMPUTE X={65:90} .
PRINT X.
PRINT X  / FORMAT "PIB2".
END MATRIX.

Run MATRIX procedure:

{65:90}
 A

X
  65  66  67  68  69  70  71  72  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87  88  89  90

X
 A

------ END MATRIX -----

Art Kendall wrote
In response to a post on this list I
            started by trying to simulate data made up
              of single letters.
              I am trying to generate random integers into what I recall as
                    the ASCII values for A to Z. 65 to
                      90.
                      However, I cannot recall how to
                        convert those values into letters.
                        compute below
                            should look like
                            compute x(#p) = somefunction
                              (RND(RV.UNIFORM(64.5,90.5)).
                             
                            *
                                  cases and single letter  items.
                                new file.
                                input program.
                                   vector x (10,a1).
                                   loop id = 1 to 25.
                                      loop #p = 1 to 10.
                                         compute x(#p)
                                  =RND(RV.UNIFORM(64.5,90.5)).
                                      end loop.
                                      end case.
                                   end loop.
                                   end file.
                                end input program.
                             
                           
    --
Art Kendall
Social Research Consultants
Please reply to the list and not to my personal email.
Those desiring my consulting or training services please feel free to email me.
---
"Nolite dare sanctum canibus neque mittatis margaritas vestras ante porcos ne forte conculcent eas pedibus suis."
Cum es damnatorum possederunt porcos iens ut salire off sanguinum cliff in abyssum?"



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Art Kendall
Social Research Consultants
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Re: generating random letters

Richard Ristow
In reply to this post by Art Kendall
At 08:37 AM 4/11/2013, Art Kendall wrote:

>In response to a post on this list I started by trying to simulate
>data made up of single letters. I am trying to generate random
>integers into what I recall as the ASCII values for A to Z. 65 to 90.

A less fancy way, but it saves you having to worry about ASCII codes
and numeric-to-character, and allows you to select characters at
random from any string you please:

* cases and single letter  items.
new file.
input program.
    STRING  #ALPH(A26).
    COMPUTE #ALPH='ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
    NUMERIC id (F3).
    vector x (10,a1).
    loop id = 1 to 25.
       loop #p = 1 to 10.
          compute x(#p) = SUBSTR(#ALPH,
                                TRUNC(RV.UNIFORM(1,27)),
                                1).
       end loop.
       end case.
    end loop.
    end file.
end input program.

LIST.

List
|-----------------------------|---------------------------|
|Output Created               |18-APR-2013 13:51:29       |
|-----------------------------|---------------|
  id x1 x2 x3 x4 x5 x6 x7 x8 x9 x10

   1 H  B  C  B  P  W  R  Q  Y  R
   2 T  E  R  K  B  N  O  R  O  U
   3 O  R  J  M  N  W  X  N  X  S
   4 I  Q  M  L  T  N  D  W  X  F
   5 K  E  O  F  C  N  K  V  H  U
   6 Y  O  Z  V  Z  B  E  X  U  U
   7 T  D  H  W  H  U  Y  I  E  F
   8 J  Z  N  U  P  N  J  K  L  C
   9 R  G  V  M  S  X  K  J  A  P
  10 R  H  N  G  S  D  F  L  X  O
  11 B  W  A  Y  Z  V  Y  X  D  X
  12 F  J  P  H  X  B  N  U  C  B
  13 X  R  T  Q  T  I  T  C  B  H
  14 A  C  Z  U  T  D  L  J  H  Y
  15 V  A  M  N  J  B  W  S  I  V
  16 K  I  A  S  O  P  U  U E  U
  17 U  J  X  L  P  F  N  P  D  P
  18 D  Z  M  U  U V  G  J  A  B
  19 A  W  D  R  R Q  W  M  Z  G
  20 D  B  W  R  A  V  O  X  G  N
  21 J  Z  L  I  B  G  L  V  N  C
  22 Z  J  X  X O  G  I  S  Z  Q
  23 N  I  B  G  P  S  M  F  C  E
  24 W  G  V  T  F  Q  Z  S  C  I
  25 U  B  V  Y  C  B  C  R  Z  U

Number of cases read:  25    Number of cases listed:  25

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Re: generating random letters

David Marso
Administrator
Here is a slightly different approach utilizing the 'no-worry' idea Richard posted.
I tend to avoid all the nested LOOP logic of INPUT PROGRAM when using
UNIFORM generators in favor of the straight to the jugular 3 liner SAVE(UNIFORM(...)
within MATRIX.

** This Macro generates N cases of P variables of Length L from string Charlist **.

DEFINE AlphaRandom
          (N !CHAREND("/") / P !CHAREND("/") / L !CHAREND("/")/ CharList !CHAREND("/")) .
                 
!LET !LenAlpha=!LENGTH(!CharList).
!IF (!L !EQ 1) !THEN !LET !VLIST= X1 !ELSE !LET !VLIST=!CONCAT('X1 TO X',!L) !IFEND  

MATRIX.
SAVE (TRUNC(UNIFORM(!N*!P,!L)*!LenAlpha)+1)/ OUTFILE */ VARIABLES !VLIST.
END MATRIX.

COMPUTE INDEX=MOD($CASENUM,!P).
IF INDEX=0 INDEX=!P.
COMPUTE ID=TRUNC(($CASENUM-.01)/!P)+1.

STRING A (!CONCAT('A',!L)).
DO REPEAT @=!VLIST.
COMPUTE A=CHAR.CONCAT(RTRIM(A),CHAR.SUBSTR(!QUOTE(!CharList),@,1)).
END REPEAT.

FORMATS ID INDEX(N3).
CASESTOVARS ID=ID/INDEX=INDEX/DROP !VLIST.
!ENDDEFINE.
SET MPRINT ON.
AlphaRandom N=25/P=10/L=2/Charlist abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.

RESULT:




 ID A.001 A.002 A.003 A.004 A.005 A.006 A.007 A.008 A.009 A.010

001 zt    uE    Xq    Vs    Dp    vP    WO    RA    cC    Gr
002 VX    If    sa    Mi    Cd    oN    gD    Zz    Vl    lX
003 nc    kd    Xc    FB    lh    kr    Zt    Ee    hS    Im
004 XU    oF    DI    bf    hl    Us    ZZ    sP    ZP    Ss
005 nb    va    fq    tH    JY    xD    vM    YE    ao    pz
006 mP    dZ    nH    cL    gL    Zp    kk    fz    Vy    Wl
007 sw    wR    vo    Mj    Ha    KI    xv    fN    IA    ec
008 SP    wR    Gt    ML    sF    uX    Kg    oU    xL    Bx
009 vC    mR    Wo    ik    FZ    ag    Yx    Qz    pg    vo
010 xK    rb    bL    Du    Fr    jU    Yp    BE    YG    WS
011 Cj    iA    xH    iT    Xn    vF    KU    pT    Me    pV
012 YR    st    UU    RP    pE    EF    GJ    qV    VL    Oz
013 YB    Ni    RV    te    oZ    We    II    AV    qX    ly
014 jN    Qv    nW    XK    Mx    aH    je    EV    Zk    iE
015 tz    Gn    ir    mD    nh    hi    DV    dX    kL    Xh
016 Qb    NQ    Sc    mp    Lg    ij    tz    bW    Ao    KX
017 bA    Vp    Ap    Cz    Xs    AK    zj    Ed    YT    gx
018 so    Fx    Ig    OD    WC    ld    tp    Yt    dk    fM
019 Qg    go    jk    Wi    Sr    AS    Rv    GK    kw    Ud
020 zW    NO    cB    hM    YO    DX    kv    FZ    WX    RL
021 eX    xS    hX    PU    dq    al    nz    YR    qx    Ub
022 Dy    fU    km    ba    dD    BA    cc    Bl    AJ    ef
023 TZ    FI    gE    by    IT    Hw    xc    Es    qa    hZ
024 Qw    aM    Eg    oM    ak    uC    mE    iQ    Bc    Cg
025 Pd    fa    bA    sI    Kl    XP    Ep    py    pr    Xb


Number of cases read:  25    Number of cases listed:  25


Richard Ristow wrote
At 08:37 AM 4/11/2013, Art Kendall wrote:

>In response to a post on this list I started by trying to simulate
>data made up of single letters. I am trying to generate random
>integers into what I recall as the ASCII values for A to Z. 65 to 90.

A less fancy way, but it saves you having to worry about ASCII codes
and numeric-to-character, and allows you to select characters at
random from any string you please:

* cases and single letter  items.
new file.
input program.
    STRING  #ALPH(A26).
    COMPUTE #ALPH='ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
    NUMERIC id (F3).
    vector x (10,a1).
    loop id = 1 to 25.
       loop #p = 1 to 10.
          compute x(#p) = SUBSTR(#ALPH,
                                TRUNC(RV.UNIFORM(1,27)),
                                1).
       end loop.
       end case.
    end loop.
    end file.
end input program.

LIST.

List
|-----------------------------|---------------------------|
|Output Created               |18-APR-2013 13:51:29       |
|-----------------------------|---------------|
  id x1 x2 x3 x4 x5 x6 x7 x8 x9 x10

   1 H  B  C  B  P  W  R  Q  Y  R
   2 T  E  R  K  B  N  O  R  O  U
   3 O  R  J  M  N  W  X  N  X  S
   4 I  Q  M  L  T  N  D  W  X  F
   5 K  E  O  F  C  N  K  V  H  U
   6 Y  O  Z  V  Z  B  E  X  U  U
   7 T  D  H  W  H  U  Y  I  E  F
   8 J  Z  N  U  P  N  J  K  L  C
   9 R  G  V  M  S  X  K  J  A  P
  10 R  H  N  G  S  D  F  L  X  O
  11 B  W  A  Y  Z  V  Y  X  D  X
  12 F  J  P  H  X  B  N  U  C  B
  13 X  R  T  Q  T  I  T  C  B  H
  14 A  C  Z  U  T  D  L  J  H  Y
  15 V  A  M  N  J  B  W  S  I  V
  16 K  I  A  S  O  P  U  U E  U
  17 U  J  X  L  P  F  N  P  D  P
  18 D  Z  M  U  U V  G  J  A  B
  19 A  W  D  R  R Q  W  M  Z  G
  20 D  B  W  R  A  V  O  X  G  N
  21 J  Z  L  I  B  G  L  V  N  C
  22 Z  J  X  X O  G  I  S  Z  Q
  23 N  I  B  G  P  S  M  F  C  E
  24 W  G  V  T  F  Q  Z  S  C  I
  25 U  B  V  Y  C  B  C  R  Z  U

Number of cases read:  25    Number of cases listed:  25

=====================
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Automatic reply: generating random letters

Michelle D. Zeidman

I am in training this afternoon and will be checking emails infrequently. If you need to contact sometime urgently, please email Celeste Gilman at [hidden email]. Otherwise, I will respond to you message when I get back into the office Friday morning.

 

Thanks,

Michelle

 

Michelle Zeidman

Transit Program Operations Specialist

Transportation Services

University of Washington

Phone: 206-616-6087

[hidden email]

 

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Re: generating random letters

Art Kendall
In reply to this post by Richard Ristow
Much neater than what I did.  It also could be easily generalized to have several single letter variables.
Art Kendall
Social Research Consultants
On 4/18/2013 1:58 PM, Richard Ristow wrote:
At 08:37 AM 4/11/2013, Art Kendall wrote:

In response to a post on this list I started by trying to simulate data made up of single letters. I am trying to generate random integers into what I recall as the ASCII values for A to Z. 65 to 90.

A less fancy way, but it saves you having to worry about ASCII codes and numeric-to-character, and allows you to select characters at random from any string you please:

* cases and single letter  items.
new file.
input program.
   STRING  #ALPH(A26).
   COMPUTE #ALPH='ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
   NUMERIC id (F3).
   vector x (10,a1).
   loop id = 1 to 25.
      loop #p = 1 to 10.
         compute x(#p) = SUBSTR(#ALPH,
                               TRUNC(RV.UNIFORM(1,27)),
                               1).
      end loop.
      end case.
   end loop.
   end file.
end input program.

LIST.

List
|-----------------------------|---------------------------|
|Output Created               |18-APR-2013 13:51:29       |
|-----------------------------|---------------|
 id x1 x2 x3 x4 x5 x6 x7 x8 x9 x10

  1 H  B  C  B  P  W  R  Q  Y  R
  2 T  E  R  K  B  N  O  R  O  U
  3 O  R  J  M  N  W  X  N  X  S
  4 I  Q  M  L  T  N  D  W  X  F
  5 K  E  O  F  C  N  K  V  H  U
  6 Y  O  Z  V  Z  B  E  X  U  U
  7 T  D  H  W  H  U  Y  I  E  F
  8 J  Z  N  U  P  N  J  K  L  C
  9 R  G  V  M  S  X  K  J  A  P
 10 R  H  N  G  S  D  F  L  X  O
 11 B  W  A  Y  Z  V  Y  X  D  X
 12 F  J  P  H  X  B  N  U  C  B
 13 X  R  T  Q  T  I  T  C  B  H
 14 A  C  Z  U  T  D  L  J  H  Y
 15 V  A  M  N  J  B  W  S  I  V
 16 K  I  A  S  O  P  U  U E  U
 17 U  J  X  L  P  F  N  P  D  P
 18 D  Z  M  U  U V  G  J  A  B
 19 A  W  D  R  R Q  W  M  Z  G
 20 D  B  W  R  A  V  O  X  G  N
 21 J  Z  L  I  B  G  L  V  N  C
 22 Z  J  X  X O  G  I  S  Z  Q
 23 N  I  B  G  P  S  M  F  C  E
 24 W  G  V  T  F  Q  Z  S  C  I
 25 U  B  V  Y  C  B  C  R  Z  U

Number of cases read:  25    Number of cases listed:  25



===================== 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
Art Kendall
Social Research Consultants