[R] hi have a question about merging.

[Dieter Menne]

helloR wrote:
> 
> 
> this is the problem:
> load this R data frame over the internet and save it to your hard drive.
> http://rss.acs.unt.edu/Rdoc/library/twang/data/raceproling.RData
> ... 
> 
> please show how to save a dataset of males only (the variable male=1) to a
> new dataframe. Then do the now to merge:
> ..
> 
Interesting homework.


helloR wrote:
> 
> I tried >merge(newr,news)
> 

In R-world, other than in c, you have to assign the result to change it.
Something like

realynew <- merge(....)

could help.

Dieter
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