On Jun 25, 2015, at 11:52 PM, Steven Yen wrote:
> Thanks Davis. But actually, the line is legitimate:
I didn't say it was illegitimate, only confusing.
>
> if (inherits(wt,what="character")) wt<-data[,wt]
What you are asking for is known in R as non-standard evaluation. Examples
include th
Thanks Davis. But actually, the line is legitimate:
if (inherits(wt,what="character")) wt<-data[,wt]
because, coming down with wt being characters, the part wt<-data[,wt]
then picks up variables data$wt. The call
wmean(mydata,wt="weight")
actually goes OK. I was hoping to figure out a
On Jun 25, 2015, at 7:48 PM, Steven Yen wrote:
> Thanks to all for the help. I have learned much about "inherit" and "class".
> I like to know about one additional option, and that is to use a calling
> parameter without the quotation marks, similar to the linear regression
> syntax:
>
> lm(d
Thanks to all for the help. I have learned much about "inherit" and
"class". I like to know about one additional option, and that is to use
a calling parameter without the quotation marks, similar to the linear
regression syntax:
lm(data=mydata,weights=wt)
Below is a simple set of codes to ca
> Steve Taylor
> on Wed, 24 Jun 2015 00:56:26 + writes:
> Note that objects can have more than one class, in which case your == and
%in% might not work as expected.
> Better to use inherits().
> cheers,
> Steve
Yes indeed, as Steve said, really do!
The use
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