It offers support to large datasets (when the
Reading in the intensity files require the existence of data packages
that contain the chip specific information (X/Y coordinates; feature
types; sequence). These data packages packages are built using the
For Affymetrix SNP arrays, users are asked to download the already built annotation packages from BioConductor. This is because these packages contain metadata that are not automatically created. The following annotation packages are available:
50K Xba - pd.mapping50kxba.240 50K Hind - pd.mapping50khind.240 250K Sty - pd.mapping250k.sty 250K Nsp - pd.mapping250k.nsp GenomeWideSnp 5 (SNP 5.0) - pd.genomewidesnp.5 GenomeWideSnp 6 (SNP 6.0) - pd.genomewidesnp.6
For users interested in genotype calls for SNP 5.0 and 6.0 arrays, we
strongly recommend the use use the