[R] apply with missing values

[Jessica Streicher]

A bit of data might be useful. Make a small example and post the data with dput().

On 24.12.2012, at 20:21, jenna wrote:

> I am trying to get the means of each participants avg saccade amplitude as a
> function of the group they were in (designated by "shape_"), but there are
> missing values in the dataset....this is what i tried...
> 
> with(data055,tapply(AVERAGE_SACCADE_AMPLITUDE,shape_,mean))
> i get an error saying the argument is not numerical or logical
> 
> next i try...
> 
>> 055  <- tapply(data055$AVERAGE_SACCADE_AMPLITUDE,
> + data055$shape_,mean, na.rm =TRUE)
> 
> still nothing....
> 
> help? thanks!
> 
> 
> 
> --
> View this message in context: http://r.789695.n4.nabble.com/apply-with-missing-values-tp4653889.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.