            Hi All: 

 

            I am completely new at Bioconductor and R, but am trying to
learn about microarray analysis.  

 

            I am running R-2.2.1 under Windows XP, and have downloaded
Bioconductor.

 

            To begin, I want to work through paper cited above.  But I
am not able to access the data.

 

            I did successfully access the affy package with the command:

 

> library(affy) 

Loading required package: Biobase

Loading required package: tools

 

Welcome to Bioconductor 

 

        Vignettes contain introductory material.

        To view, simply type 'openVignette()' or start with
'help(Biobase)'. 

        For details on reading vignettes, see the openVignette help
page.

 

But when I attempt to access the data on page 4 of the document, I get
an error:

 

> Data <- ReadAffy()

Error in AllButCelsForReadAffy(..., filenames = filenames, widget =
widget,  : 

        No cel filennames specified and no cel files in specified
directory:C:/Program Files/R/R-2.2.1

 

            Can anyone help me enter the correct commands, or help me
with the correct commands to download/access the information needed to
continue working through the paper?

 

Thank you very much in advance.  

 

            Greg 

 

W. Gregory Alvord, Ph.D.

Director, Statistical Consulting Services

Computer and Statistical Services

National Cancer Institute at Frederick

Fort Detrick at 7th Street

Post Office Box B

Miller Drive, Building 362, Room 33

Frederick, MD  21702-1201

Phone:  301.846.5101

Fax:  301.846.6196

E-mail:  gwa@css.ncifcrf.gov

 


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