# ERROR: MethodError: no method matching expand\_extrema!(::Plots.Axis, ::Vector{Matrix{Float64}})

**URL:** <https://discourse.julialang.org/t/error-methoderror-no-method-matching-expand-extrema-plots-axis-vector-matrix-float64/84459>\
**Category:** Visualization\
**Tags:** question, plots\
**Created:** [July 19, 2022, 1:31pm UTC](https://discourse.julialang.org/t/error-methoderror-no-method-matching-expand-extrema-plots-axis-vector-matrix-float64/84459 "2022-07-19T13:31:11Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Hupdup](https://avatars.discourse-cdn.com/v4/letter/h/7ba0ec/32.png) [@Hupdup](https://discourse.julialang.org/u/Hupdup)\
**Post date:** [July 19, 2022, 1:31pm UTC](https://discourse.julialang.org/t/error-methoderror-no-method-matching-expand-extrema-plots-axis-vector-matrix-float64/84459/1 "2022-07-19T13:31:11Z")

</div>

Hi,  
I want to plot a confidence interval, but unfourtunaly I am not able to do it. I got the following error message:  
ERROR: MethodError: no method matching expand\_extrema!(::Plots.Axis, ::Vector{Matrix{Float64}})

The my plot function looks like this:

 ![grafik](https://global.discourse-cdn.com/julialang/original/3X/1/d/1dae7d138f6bd779a0dbb368effa21d5528b2509.png)

“all\_score\_mean” and “all\_score\_std” look like this:

 ![grafik](https://global.discourse-cdn.com/julialang/original/3X/3/c/3c5ab77ea833e1b56e831413e16315285402b13e.png)

does anybody know how to solve the problem?  
Thanks in advance!

---

<div class="post-metadata">

**Author:** ![BeastyBlacksmith](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/beastyblacksmith/32/4741_2.png) [@BeastyBlacksmith](https://discourse.julialang.org/u/BeastyBlacksmith)\
**Post date:** [July 19, 2022, 1:34pm UTC](https://discourse.julialang.org/t/error-methoderror-no-method-matching-expand-extrema-plots-axis-vector-matrix-float64/84459/2 "2022-07-19T13:34:32Z")

</div>

you probably just need to remove the square brackets from all terms containing `all_score_mean`.

It would have been easier to test, if you provided quoted source code instead of screenshots.

---

<div class="post-metadata">

**Author:** ![Hupdup](https://avatars.discourse-cdn.com/v4/letter/h/7ba0ec/32.png) [@Hupdup](https://discourse.julialang.org/u/Hupdup)\
**Post date:** [July 19, 2022, 1:59pm UTC](https://discourse.julialang.org/t/error-methoderror-no-method-matching-expand-extrema-plots-axis-vector-matrix-float64/84459/3 "2022-07-19T13:59:51Z")

</div>

Thanks for the quick reply and for your help! It worked! Thank you very much!!!