Re: st: "if and &" expression in edit

[Jeph Herrin <junk@spandrel.net>]

Try

 edit if plannedsx!=. & modalit==.

or better

 edit if !mi(plannedsx) & mi(modalit)


hth,
Jeph


b. water wrote:
> Dear all,
>
> Stata 8.2,
>
> I wanted to do this:
>
> edit if plannedsx!="" & modalit==""
>  
> i.e. i wanted to edit those where plannedsx are not missing but where modality are missing
>  
> and received this message:
>  
> type mismatch
> r(109);
>
> The variables descriptions are:
>
>               storage  display     value
> variable name   type   format      label      variable label
> -------------------------------------------------------------------------------
> plannedsx       float  %9.0g       planndsx     
> modalit         byte   %1.0f       electrosx
>                                             
> Questions are:
>  
> 1. How I can achieve what I wanted to do?
> 2. I would appreciate confirmation of this situation: I tried another edit with if and & using another conditions and variables, these few attempts returned the same type mismatch error r(109) - so I presumed edit with if and & is not a legal syntax.
>
> Thank you for advice & help,
> bw
>  
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