Re: [R] classification tables

From: Philippe Grosjean <phgrosjean_at_sciviews.org>
Date: Mon 07 Aug 2006 - 16:06:02 EST

> x <- c(1,2,3,4,2,3,3,1,2,3)
> y <- c(2,1,3,4,1,3,3,2,2,3)
> table(x, y)

    y
x 1 2 3 4

   1 0 2 0 0
   2 2 1 0 0
   3 0 0 4 0
   4 0 0 0 1
> ?table

Best,

Philippe Grosjean

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( ( ( ( ( Prof. Philippe Grosjean
  ) ) ) ) )
( ( ( ( ( Numerical Ecology of Aquatic Systems   ) ) ) ) ) Mons-Hainaut University, Belgium ( ( ( ( (
..............................................................

Taka Matzmoto wrote:

> Dear R-users
> 
> I have two vectors. One vector includes true values and the other vector has 
> estimated values. Values are all integers from 1 to 4.
> 
> For example,
> 
> x <- c(1,2,3,4,2,3,3,1,2,3)
> y <- c(2,1,3,4,1,3,3,2,2,3)
> 
> I would like to a classfication table x by y. With the table, I would like 
> to calculate what percentage is correct classfication.
> 
> Which R function do I need to use for creating a 4 * 4 classification table?
> 
> Thank you.
> 
> Taka,
> 
> ______________________________________________
> R-help@stat.math.ethz.ch 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.
> 
>

______________________________________________
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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. Received on Mon Aug 07 19:50:13 2006

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