Dynamic graphics for microarray data

                              Harold Henderson
                           AgResearch Ruakura, NZ

I will present some examples of the use of simple dynamic graphics for visualizing 
data from two colour cDNA microarrays. I find dynamic graphics useful in checking 
the data before normalisation. This checking easily reveals some unusual features 
of the data, for example, spots that are decidedly green on all (including dye reversal) 
slides and subsequently were found to be a contamination. Dynamic graphics are also 
useful in exploring the data after it has been normalised, in the subsequent analysis 
across slides, for example, in checking the consistency of ESTs with the same contig.