A question about the heatmap - are the OTUs in each group relativized to the total # of OTUs in that group (a) or the maximum abundance in that group (b)?
A simplified example to make things clearer: --The group of interest has 100 sequences --OTU Z has the highest abundance with 20 sequences --All other OTUs have only 1 sequence Is the relativization for OTU Z: 20/100=0.2 (a) or 20/20=1 (b)? Is the relativization for all the other OTUs: 1/100=0.01 (a) or 1/20=0.05 (b)?
Is there any way to manipulate the relativization? If not, can that be added in the future?