R help - Mar 2011 - 'x' values must be positive.

> b
[1] "2" "1" "1" "1" "1"
"1"
> pie(b)
Error in pie(b) : 'x' values must be positive.

Can someone help me?

And sorry i am an beginner

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It's ok, i solved it.
It wasn't an integer,

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'b' appears to be characters.  try

pie(as.integer(b))

On Wed, Mar 16, 2011 at 9:28 AM, rens <piccavet at hotmail.com>
wrote:
>> b
> [1] "2" "1" "1" "1" "1"
"1"
>> pie(b)
> Error in pie(b) : 'x' values must be positive.
>
> Can someone help me?
>
> And sorry i am an beginner
>
> --
> View this message in context:
http://r.789695.n4.nabble.com/x-values-must-be-positive-tp3381744p3381744.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.
>


-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?

Hi,

b is a character vector.
Try as.numeric(b).

You probably need to read some documentation about R.

Ivan

Le 3/16/2011 14:28, rens a ?crit :
>> b
> [1] "2" "1" "1" "1" "1"
"1"
>> pie(b)
> Error in pie(b) : 'x' values must be positive.
>
> Can someone help me?
>
> And sorry i am an beginner
>
> --
> View this message in context:
http://r.789695.n4.nabble.com/x-values-must-be-positive-tp3381744p3381744.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.
>
-- 
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
Abt. S?ugetiere
Martin-Luther-King-Platz 3
D-20146 Hamburg, GERMANY
+49(0)40 42838 6231
ivan.calandra at uni-hamburg.de

**********
http://www.for771.uni-bonn.de
http://webapp5.rrz.uni-hamburg.de/mammals/eng/1525_8_1.php

On 16-Mar-11 13:28:00, rens wrote:
>> b
> [1] "2" "1" "1" "1" "1"
"1"
>> pie(b)
> Error in pie(b) : 'x' values must be positive.
> 
> Can someone help me?
> 
> And sorry i am an beginner
The problem (as indicated by the "" marks around each value)
is that the variable 'b' is a vector of *characters*, not of
numbers.

Compare the result of

  x <- c(2,1,1,1,1,1)
  x
  # [1] 2 1 1 1 1 1
  pie(x)

with the result of

  b <-
c("2","1","1","1","1","1")
  b
  # [1] "2" "1" "1" "1" "1"
"1"
  pie(b)
  # Error in pie(b) : 'x' values must be positive.

and:

  typeof(x)
  # [1] "double"

  typeof(b)
  # [1] "character"

The underlying important question is:
  How was the vector 'b' constructed?
You clearly expect 'b' to be numeric, but it is of
type character. The reason for this is what you need
to find out!

Hoping this helps,
Ted.

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Date: 16-Mar-11                                       Time: 14:48:47
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