I'd guess that "filename" is not a matrix nor something that can
be coerced
into a matrix. Try
> class(filename)
To find out if it is a matrix. Without knowing more about "filename"
it is
hard to diagnose. It could be a data.frame with a character field or some
other simple issue resulting from importing the data into R.
> str(filename)
Will list the fields in the "filename" and their type. For norm they
must
all be numeric.
----------------------------------------------
David L Carlson
Associate Professor of Anthropology
Texas A&M University
College Station, TX 77843-4352
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On
Behalf Of David Kaplan
Sent: Tuesday, June 28, 2011 3:22 PM
To: r-help at stat.math.ethz.ch
Subject: [R] Question about error message
Greetings,
I'm getting this error message using Joe Shafer's "NORM"
package.
Error in storage.mode(x) <- "double" :
(list) object cannot be coerced to type 'double'
I'm not sure what this means.
I get this message when running
s <- prelim.norm(filename)
prelim.norm is used to develop some summary statistics, etc. before
implementing the EM algorithm for missing data. Please note that this
is a data fusion exercise and there is considerable amounts of missing
data by design.
Thanks in advance,
David
--
======================================================================David
Kaplan, Ph.D.
Professor
Department of Educational Psychology
University of Wisconsin - Madison
Educational Sciences, Room, 1082B
1025 W. Johnson Street
Madison, WI 53706
email: dkaplan at education.wisc.edu
homepage:
http://www.education.wisc.edu/edpsych/default.aspx?content=kaplan.html
Phone: 608-262-0836
======================================================================
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