[R] How to get the input of a function right?

[Robert Baer]

Your definition of x1, x2 and x3 requires the c() function.  Try leaving 
some space around operators for increased readability.

Remember that the that the result of operations on sets containing NA is 
often set to "NA" as well.  My guess is that if you print out x it contains 
NA and that your function does operations on x that are included in the 
function result.

Rob

-----Original Message----- 
From: stella
Sent: Thursday, March 22, 2012 10:43 AM
To: r-help at r-project.org
Subject: [R] How to get the input of a function right?

Hi,

I wrote a function with three inputs fun(x,y,z).

x is a matrix of three vectors combined with cbind. e.g.

x1<-(1,2,3,4)
x2<-(2,3,4,5)
x3<-(3,4,5,6)

x<-cbind(x1,x2,x3)

y is a vector e.g
y<-c(7,8,9)

z is a real number e.g.
z<-2.5

If a give the function an input like this, I get 'NA' in return. If I give
the function a vector e.g c(1,2,3) instead of 'x' the function works just
fine.
Does anyone has an idea why the function would not except 'x' as an input?

Thank you very much!
Stella

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------------------------------------------
Robert W. Baer, Ph.D.
Professor of Physiology
Kirksville College of Osteopathic Medicine
A. T. Still University of Health Sciences
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Kirksville, MO 63501
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