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Set the column you don't want to NULL x$remove.column <- NULL


Seurat does violin plots using ggplot, which orders based on the factor levels. You need to re-factor your grouping category so that the levels matches your preferred order: # default level sort order is alphabetical obj[["grouping"]] <- factor(unlist(obj[["grouping"]])) VlnPlot(obj, = "grouping", features = c("...


If you launch like docker run -p 8888:8888 jupyter/r-notebook you will get the help page like a widget and a warning in your cell output. Check your browser, maybe is blocking pop-up elements.

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