Dear List:

I got a file like the following, I guess the data is M ( log2 expression
ratio) from microarray:

    56071 1052 1062 3061 3081 8052 8072 10061 10062 10072 1415670_at
8.430148 8.899385 8.625973 8.708319 8.759182 8.281378 8.905347 8.625347
9.029528 1415671_at 9.039655 9.244914 9.121714 9.002296 8.97237 8.599152
9.004381 9.267188 9.115415 1415672_at 8.86041 8.998826 9.077138 8.994297
8.885136 8.918512 9.087072 8.867808 8.841663 1415673_at 6.565344 6.384893
6.856466 6.17951 5.786523 6.507357 6.371563 5.886887 6.42499 1415674_a_at
7.877212 8.038635 8.120319 8.067843 7.56546 7.846677 7.921398 7.629843
7.787807 1415675_at 7.524559 7.496189 7.718928 7.164805 7.102158 7.331314
7.226036 7.424044 7.368011 1415676_a_at 9.315694 9.134394 9.224642 8.821193
8.886963 8.702572 8.883647 9.028728 8.921372

the rows are Affymetrix probe and columns are different mice number (arrays)
I need to do a category analysis using category package, so I need to
generate a MAList or ExprSet object.
Is there anybody who can tell me how to do it?

thanks

Best

Shiliang

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