> -----Original Message-----
> From: Jun Xu [mailto:[email protected]]
> Sent: Thursday, September 12, 2002 10:15 AM
> To: [email protected]
> Subject: st: bootstrap statistic
>
>
> In bs command, Stata puts a formula in the second set of
> quotation marks to
> denote a statistic to bootstrap like
>
> logit y x1 x2
> bs "logit y x1 x2" "whatever statistic formula", rep(#)
>
> However, it's kind of strange to me that I cannot wrap up
> lines use /* */
> and it seems that I cannot put space between numeric signs
> like "_b[_cons] +
> mean2*_b[x1] + mean3*_b[_x2]" won't work, and I have to get
> rid of any space
> like "_b[_cons]+mean2*_b[x1]+mean3*_b[_x2]". Here mean2 and
> mean3 are
> defined as scalars. Any input on this? Is that because I
> use scalar in the
> quotation mark, or it has to be the case that no wrap-up of
> the stuff within
> the second set of quotation marks or the space thing. If so,
> might be kind
> of inconvient if I have a long formula for a statistic to bootstrap.
The -bs- command breaks up the line of statistics with the -tokenize-
command, splitting the line on white space. You can include spaces in
the individual statistics by enclosing them in quotation marks, and
enclosing the whole list in compound quotes:
bs "reg mpg price weight" `""_b[price] + _b[weight]" "_b[price]"
"_b[weight]""'
However, as far as I can tell you cannot break up the line of statistics
over
two lines.
Nick Winter
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