Hi, 

I'm trying to make a few heatmaps dynamically, however I'm having a bit of trouble when trying to make the annotation object.

According to the guides, you need to provide a named vector to the col argument in HeatmapAnnotation function, however I can't do that when generating dynamically, as there's different annotations. I've tried an un-named vector, but I get the following error every time:

Error in ColorMapping(name = name, colors = col, na_col = na_col) : 
  either provide `levels` or provide named `colors`.

Code:

  ha = HeatmapAnnotation(df  = df, 
                         col = list(type = c("black", "red")))

Any suggestions? - I feel like I've missed something obvious but can't seem to nail it down.

Thanks, 

in following code:

 ha = HeatmapAnnotation(df  = df, 
                         col = list(type = c("black", "red")))

change `c("black", "red")` to a vector with names that names correspond to the levels in `df$type` so that we can correctly map colors to `df$type`.