Statistics Help @ Talk Stats Forum - R http://www.talkstats.com/ R programming and usage, R news, R tips and tutorials en Thu, 23 May 2013 10:17:29 GMT vBulletin 60 http://www.talkstats.com/images/misc/rss.png Statistics Help @ Talk Stats Forum - R http://www.talkstats.com/ canceling effect of interaction in a 2-factor table of means http://www.talkstats.com/showthread.php/43815-canceling-effect-of-interaction-in-a-2-factor-table-of-means?goto=newpost Wed, 22 May 2013 21:57:04 GMT Hi, I would like if there is a simple R command to get a table of means (2-factor analysis) with the interaction addendum removed (canceled out)... Hi,

I would like if there is a simple R command to get a table of means (2-factor analysis) with the interaction addendum removed (canceled out) in an ANOVA setting.

thanks! ]]> R stablum http://www.talkstats.com/showthread.php/43815-canceling-effect-of-interaction-in-a-2-factor-table-of-means Converting Matrix with chars to data frame http://www.talkstats.com/showthread.php/43797-Converting-Matrix-with-chars-to-data-frame?goto=newpost Wed, 22 May 2013 12:53:04 GMT Hey guys, I am studying about converting Matrix to Data frames. What I have observed though is that converting matrix with characters into a data... Hey guys,

I am studying about converting Matrix to Data frames. What I have observed though is that converting matrix with characters into a data frame gives factors and not chars as shown below:

> yr.matrix
Qtr1 Qtr2 Qtr3 Qtr4
row1 "Jan" "Apr" "Jul" "Oct"
row2 "Feb" "May" "Aug" "Nov"
row3 "Mar" "Jun" "Sep" "Dec"
> yr.mat2frame = as.data.frame (yr.matrix)
> yr.mat2frame
Qtr1 Qtr2 Qtr3 Qtr4
row1 Jan Apr Jul Oct
row2 Feb May Aug Nov
row3 Mar Jun Sep Dec

How may I use ascharacter() function to see chars in my data frame?

Thanks,
Chai ]]> R NoviceDataMiner http://www.talkstats.com/showthread.php/43797-Converting-Matrix-with-chars-to-data-frame Multiple Regression http://www.talkstats.com/showthread.php/43772-Multiple-Regression?goto=newpost Tue, 21 May 2013 19:36:23 GMT Hi!

I'm an R-beginner and need to regress [log(yt) - log(yo)] on several variables. I am using the lm-function.
Unfortunately, it is not working, i.e. there is an error message when I simply type lm((log(yt) - log(y0))~a+b+c, data =d). :/

Can you guys please help me? : 3
I'd really appreciate it more than you can imagine.

All the best,

Amanda ]]> R Amanda_UK http://www.talkstats.com/showthread.php/43772-Multiple-Regression