other way of making a table?
On 09/10/2012 9:24 AM, Jessica Streicher wrote:
So.. real=factor(realLabels) predicted=factor(predictedLabels) fl<-unique(levels(real),levels(predicted)) real=factor(realLabels,fl) predicted=factor(pl,fl) table(real,predicted) ? i kinda dont like it :/
Why make it so complicated? Don't you know the levels in advance? If so, it's much simpler: levels <- c(0,1) x <- factor( c(1,1,1,0,0), levels=levels) y <- factor( c(1,1,1,1,1), levels=levels) table(x,y) Even if you don't know them, the levels calculation doesn't need to work on a factor, you could simply do x<-c(1,1,1,0,0) y<-c(1,1,1,1,1) levels <- unique(c(x,y)) x <- factor( x, levels=levels) y <- factor( y, levels=levels) table(x,y) Duncan Murdoch
On 09.10.2012, at 15:00, Jeff Newmiller wrote:
Use factors?
---------------------------------------------------------------------------
Jeff Newmiller The ..... ..... Go Live...
DCN:<jdnewmil at dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go...
Live: OO#.. Dead: OO#.. Playing
Research Engineer (Solar/Batteries O.O#. #.O#. with
/Software/Embedded Controllers) .OO#. .OO#. rocks...1k
---------------------------------------------------------------------------
Sent from my phone. Please excuse my brevity.
Jessica Streicher <j.streicher at micromata.de> wrote:
I'm making tables for prediction results of classifiers (2 classes) that show the usual numbers, true positives, false positives, etc I used the command table(predictedLabels,realLabels) to make those. I just had a case though ,where one of the label vectors had only one class in it. This will result in only half a table. Compare: x<-c(1,1,1,0,0) y<-c(1,1,1,0,1) table(x,y) to x<-c(1,1,1,0,0) y<-c(1,1,1,1,1) table(x,y) I want the second one to still have all 4 cases (second column all zeros then). Any easy solutions?
______________________________________________ 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.
______________________________________________ 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.