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st: RE: problem with describe and r(varlist)


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: problem with describe and r(varlist)
Date   Mon, 27 Nov 2006 00:04:45 -0000

I guess that your line 

local AlleVariablen = r(varlist) 

evaluated, not copied. Thus the limit on 
the length of a string in a string expression
(see -help limits-) bit you. 

Actually, I am a bit puzzled, as in my version
of Stata, 9.2, -describe, simple- does not leave behind
r(varlist) -- contrary to [D] describe and your example. 

Anyway, your code can be slimmed down to cut the 
middle macro: 

ds 
foreach x of var * {
	codebook `x', compact
	tabulate `x'
}  

Nick 
n.j.cox@durham.ac.uk 

Daniel Becker
 
> I am trying to loop over all names of variables in the memory. to  
> prepare for that, I want to prepare a local that lists all my  
> variables. I thought that r(varlist) stores them, but, as you see  
> below, the "descibe, simple" commmand gives me all my variables, it  
> stores only a subset in r(varlist).
> 
> Does anyone know why that happens?
> 
> Thanks for any hint,
> 
> daniel
> 
> 
> 
> #### from my do-file
> 
> describe, simple;
> display r(varlist);
> local AlleVariablen = r(varlist);
> display "Im local AlleVariablen steht: " "`AlleVariablen'";
> 
> foreach x of local AlleVariablen {;
> codebook `x',compact;
> tabulate `x';
> };
> 
> 
> #### stata-output from the log
>  > describe, simple;
> res_id       B6           B15          B24          C5_1          
> E4_sonst     F5_konkret
> start        B7           B16          B25          C5_2          
> E5           F6
> ende        - B8           B16_andere   B26          C5_3          
> E6           F6_konkret
> A1           B9_1         B17          C1           D1            
> E7           F7
> A2           B9_2         B17_sonst    C2           D1_andere     
> E8           F7_konkret
> A2_sonst     B10          B18          C3_1         D2            
> E9           G1
> A3           B10_konkret  B18_sonst    C3_2         D3            
> E10          G2
> A4           B11          B19          C3_3         D4            
> E10_andere   G3
> B1           B11_sonst    B20          C3_4         E1            
> E11          A1_erstf
> B2           B12          B20_konkret  C4_1         E1_sonst      
> F1           A1_zweitf
> B3           B12_sonst    B21          C4_2         E2           F2
> B4           B13          B21_sonst    C4_3         E2_konkret   F3
> B5           B13_mehr     B22          C4_4         E3           F4
> B5_sonst     B14          B23          C4_5         E4           F5
> 
>  display r(varlist);
> res_id start ende A1 A2 A2_sonst A3 A4 B1 B2 B3 B4 B5 B5_sonst B6 B7  
> B8 B9_1 B9_2 B10 B10_konkret B11 B11_son
>  > st B12 B12_sonst B13 B13_mehr B14 B15 B16 B16_andere B17 
> B17_sonst  
> B18 B18_sonst B19 B20 B20_konkret B21 B2
>  > 1_sonst B22 B23 B24 B25 B26
> 
> #### the variables C1 ... D1 ... etc are missing in r(varlist)
> 

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