Dear BioC users, It appears as if the function read.celfile (affy package) used to create Cel objects is no longer available. I would like to use the spatial normalization function of the smida package, spat.norm, however, it requires that I first generate cel objects. I imagine that there is a simple way to do so, any suggestions? Also, I am having difficulties manipulating the output from cond.norm (also in the smida package) for use in a summarization method. The problem appears to be that cond.norm generates a matrix of expression values with rows representing probes and columns representing arrays, but is not an affybatch- as such I cannot call the command- expresso to generate summarized expression values. How can I convert this matrix to an affybatch? Any suggestions would be most appreciated. Noelle