# Flux.data ? why is data undefined?

**URL:** https://discourse.julialang.org/t/flux-data-why-is-data-undefined/103219
**Category:** General Usage
**Created:** [August 26, 2023, 12:09pm UTC](https://discourse.julialang.org/t/flux-data-why-is-data-undefined/103219 "2023-08-26T12:09:55Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Ananya\_Hazarika](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ananya_hazarika/32/50508_2.png) [@Ananya\_Hazarika](https://discourse.julialang.org/u/Ananya_Hazarika)
#### Post date: [August 26, 2023, 12:09pm UTC](https://discourse.julialang.org/t/flux-data-why-is-data-undefined/103219/1 "2023-08-26T12:09:55Z")

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in this:  
data = Iterators.repeated((), 100)

opt = ADAM(0.1)

cb = function () #callback function to observe training

display(loss\_rd\_dde())

# using `remake` to re-create our `prob` with current parameters `p`

display(plot(solve(remake(prob,p=Flux.data(p)),alg,save\_everystep=true),ylim=(0,6)))

end

cb()

ERROR: LoadError: UndefVarError: `data` not defined  
Stacktrace:  
[1] (::var"#5#6")()

---

<div class="post-metadata">

### Author: ![disadone](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/disadone/32/27089_2.png) [@disadone](https://discourse.julialang.org/u/disadone)
#### Post date: [September 14, 2024, 5:16am UTC](https://discourse.julialang.org/t/flux-data-why-is-data-undefined/103219/4 "2024-09-14T05:16:21Z")

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I also wanna know what Flux.data is replaced as.