Re: st: simple question: generating variables using the if / or command

[Scott Cunningham <scunning@gmail.com>]

On Apr 27, 2006, at 10:02 AM, Gauri Khanna wrote:

> Dear Stata list,
>
> I have a seemingly simple problem that I can't seem to figure out.
>
> 1) I would like to generate a new variable :
>
> generate newvariable=var1+var2+var3 if dum1=1 and or dum2=1 and or  
> dum3=1
gen newvariable=(var1+var2+var3) if dum1==1 | dum2==1 | dum3==1

> 2) If instead I did the following....
>
> generate newvariable=var1+var2+vhttp:// 
> by112fd.bay112.hotmail.msn.com/cgi-bin/compose?&curmbox=00000000% 
> 2d0000%2d0000%2d0000% 
> 2d000000000001&a=8e97f2d6d33d18578baf68a0a3ed45387544cbaa5b179c9e4483d 
> 1f9e6d16955#
> Sendar3 if dum1=1 & dum2=1 & dum3=1
>
> .... I would only capture values for var1, var2 and var3 if ALL the  
> three dummies simultaneously are 1. is this correct? If so I  do  
> not want this.
This was garbled for some reason.  Not sure what happened, but a URL  
was posted in the middle.  I think I can see one problem, though.   
You want newvariable to equal the sum of three variables if any of  
the dummy variables = 1, but it looks like you are requiring it to  
equal 1 if all of the dummies equal 1.  In other words, you are using  
the ampersand (&) when you should be using the (|) (see above).

sc
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