How to change colors in bar_plot to make different taxons

[M_AcostaCH]

@alla

plot_bar(data, x = "SampleID", fill = "Class")

HI @alla , is better try to help you if put the reprex.

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

Try with this

head(dput(data, 100)) # 

For more control in which color you want, you could addscale_fill_manual()
If you have 20 taxon you need 20 color. Don't forget the color for NA value or omit.

For select better color (RGB) check this page and put the number with # for each color.

Paletton - The Color Scheme Designer

library(tidyverse)
ggplot(data,x = "SampleID", fill = "Class") +
  geom_bar()+
  scale_fill_manual(values = c('red', 'blue', 'green','red', 'blue',
                               '#AA9539', '#256F5C', '#AA6339',' #3E3175', '#D6D214',   #You could change manual color 
                               'red', 'blue', 'green','red', 'blue',
                               'red', 'blue', 'green','red', 'blue',
                               'red', 'blue', 'green','red', 'blue'))