# Problem with scatter plot of a dataframe

**URL:** <https://discourse.julialang.org/t/problem-with-scatter-plot-of-a-dataframe/71431>\
**Category:** New to Julia\
**Tags:** dataframes, plots\
**Created:** [November 13, 2021, 3:12pm UTC](https://discourse.julialang.org/t/problem-with-scatter-plot-of-a-dataframe/71431 "2021-11-13T15:12:56Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![dodoplus](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dodoplus/32/30148_2.png) [@dodoplus](https://discourse.julialang.org/u/dodoplus)\
**Post date:** [November 13, 2021, 3:12pm UTC](https://discourse.julialang.org/t/problem-with-scatter-plot-of-a-dataframe/71431/1 "2021-11-13T15:12:56Z")

</div>

This code doesn’t plot anything:

```julia
using Plots
using DataFrames
df = DataFrame(a=rand(30), b=rand(30), c=repeat(["a", "b", "c"], outer=10));
g = groupby(df, "c");
scatter()
for (s, x) in pairs(g)
    scatter!(x[!, "a"], x[!, "b"])
end

```

However, this seems to work just fine:

```julia
scatter()
scatter!(g[1][!, "a"], g[1][!, "b"])
scatter!(g[2][!, "a"], g[2][!, "b"])
scatter!(g[3][!, "a"], g[3][!, "b"])

```

 ![Screen Shot 2021-11-13 at 17.09.39](https://global.discourse-cdn.com/julialang/original/3X/6/0/6010e12ae7a059497d6ae408ed935d9c47308409.png)

Versions:

```console
% julia
               _
   _ _ _(_)_ | Documentation: https://docs.julialang.org
  (_) | (_) (_) |
   _ _ _| |_ __ _ | Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` | |
  | | |_| | | | (_| | | Version 1.6.3 (2021-09-23)
 _/ |\ __'_|_|_|\__'_| | Official https://julialang.org/ release
|__/ |

(@v1.6) pkg> st Plots GR DataFrames
      Status `~/.julia/environments/v1.6/Project.toml`
  [a93c6f00] DataFrames v1.2.2
  [28b8d3ca] GR v0.62.1
  [7073ff75] IJulia v1.23.2
  [91a5bcdd] Plots v1.23.5

(@v1.6) pkg>

```

Thanks

---

<div class="post-metadata">

**Author:** ![dodoplus](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dodoplus/32/30148_2.png) [@dodoplus](https://discourse.julialang.org/u/dodoplus)\
**Post date:** [November 13, 2021, 3:15pm UTC](https://discourse.julialang.org/t/problem-with-scatter-plot-of-a-dataframe/71431/2 "2021-11-13T15:15:48Z")

</div>

Oops. Problem is `nothing` returned from `for` loop.  
Need an additional call to `plot!()`