Now that David Clayton's snpMatrix package has entered Bioc there are opportunities for substantial streamlining of GGtools/GGdata. The racExSet representation in use will not be deleted, but the class for the main exemplars will involve a more efficient representation using snp.matrix objects. This would lead to dramatic changes in the GGdata package, which will use a whole-genome as opposed to chromosome-specific representation. Additionally, new independent resources for gene and snp locations will allow removal of various metadata elements from the GGtools/ GGdata data stores. Our standard approach is to deprecate for a cycle and then remove, but I would like to remove the GGdata chr* objects in one fell swoop. Any GGdata/GGtools users who have objections to such a change are invited to contact me off list for further discussions. I will summarize back when discussions conclude. --- Vince Carey, PhD Assoc. Prof Med (Biostatistics) Harvard Medical School Channing Laboratory - ph 6175252265 fa 6177311541 181 Longwood Ave Boston MA 02115 USA stvjc at channing.harvard.edu The information transmitted in this electronic communica...{{dropped:10}}