# Re-use existing StatsPlots Recipes?
**URL:** https://discourse.julialang.org/t/re-use-existing-statsplots-recipes/35104
**Category:** General Usage
**Tags:** question, plotting, recipe
**Created:** [February 25, 2020, 8:30am UTC](https://discourse.julialang.org/t/re-use-existing-statsplots-recipes/35104 "2020-02-25T08:30:17Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@jling](https://discourse.julialang.org/u/jling)
#### Post date: [February 25, 2020, 8:30am UTC](https://discourse.julialang.org/t/re-use-existing-statsplots-recipes/35104/1 "2020-02-25T08:30:17Z")
I’m trying to define a `stackedhist` recipes which takes `bins` and `array{array}` and uses [groupedbar](https://github.com/JuliaPlots/StatsPlots.jl#grouped-bar-plots) to display a stacked histogram, the following **function** works:
```julia
using StatsPlots, StatsBase
function stack_plot(args...)
bins = args[1]
# the weights of bar chart are vertical vector
weights_ary = mapreduce(x->fit(StatsBase.Histogram, x, bins).weights, hcat, args[2])
groupedbar(bins[1:end-1], weights_ary, bar_position = :stack)
end
stack_plot(0:0.1:1, [randn(100), randn(100)])
```
However, the following recipe does not work:
```julia
using StatsPlots, StatsBase
@userplot StackedHist
@recipe function f(h::StackedHist)
seriestype := :groupedbar
bar_position = :stack
bins = h.args[1]
# the weights of bar chart are vertical vector
weights_ary = mapreduce(x->fit(StatsBase.Histogram, x, bins).weights, hcat, h.args[2])
bins[1:end-1], weights_ary
end
###
ERROR: The backend must not support the series type Val{:groupedbar}, and there isn't a series recipe defined.
```
Am I doing something obvious+stupid thing here?
---
### Author:  [@mkborregaard](https://discourse.julialang.org/u/mkborregaard)
#### Post date: [February 25, 2020, 11:50am UTC](https://discourse.julialang.org/t/re-use-existing-statsplots-recipes/35104/2 "2020-02-25T11:50:39Z")
It’s just that `groupedbar` is not a `series recipe` and thus cannot be used as a `seriestype`. Instead, return
```julia
RecipesBase.recipetype(:groupedbar, bins[1:end-1], weights_ary)
```
from the recipe