[BioC] Fail to recognize CDF-file

Jens Vilstrup Johansen jvj@nordicbioscience.com
Fri, 15 Nov 2002 09:51:24 +0100


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Hi

I've installed R (version 1.5.1) on my windows machine and used the =
install script to install the full  Bioconductor package.=20

1. I change the directory to the folder containing my CEL-files and the =
CDF-file.

2. I load the 'affy'-package: "library (affy)". OK, so far.

3. I write "Data <-ReadAffy()" and get the following error message:'

reading CDF file
Error in read.cdffile(CDFfile, compress =3D compress.cdf) :=20
        The specified file does not appear to be a CDF file.

What has gone wrong?
I've attached the CDF-file for U133A that I've used, in case that is the =
reason.

I'd really appreciate your advice.
Thanks!

regards,
 Jens Johansen
Nordic Bioscience A/S



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<P><FONT SIZE=3D2 FACE=3D"Arial">Hi</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">I've installed R (version 1.5.1) on my =
windows machine and used the install script to install the full&nbsp; =
Bioconductor package. </FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Arial">1. I change the directory to the folder =
containing my CEL-files and the CDF-file.</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">2. I load the 'affy'-package: =
&quot;library (affy)&quot;. OK, so far.</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">3. I write &quot;Data =
&lt;-ReadAffy()&quot; and get the following error message:'</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">reading CDF file</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">Error in read.cdffile(CDFfile, =
compress =3D compress.cdf) : </FONT>

<BR><FONT SIZE=3D2 =
FACE=3D"Arial">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The specified =
file does not appear to be a CDF file.</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">What has gone wrong?</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">I've attached the CDF-file for U133A =
that I've used, in case that is the reason.</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">I'd really appreciate your =
advice.</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">Thanks!</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">regards,</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">&nbsp;Jens Johansen</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">Nordic Bioscience A/S</FONT>
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