# Plot gets jumbled up when a map is applied
**URL:** https://discourse.julialang.org/t/plot-gets-jumbled-up-when-a-map-is-applied/132995
**Category:** General Usage
**Tags:** plotting, dataframes, pythonplot, plotsjl
**Created:** [October 8, 2025, 11:22pm UTC](https://discourse.julialang.org/t/plot-gets-jumbled-up-when-a-map-is-applied/132995 "2025-10-08T23:22:41Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Quantodeluz](https://discourse.julialang.org/u/Quantodeluz)
#### Post date: [October 8, 2025, 11:22pm UTC](https://discourse.julialang.org/t/plot-gets-jumbled-up-when-a-map-is-applied/132995/1 "2025-10-08T23:22:41Z")
I have some temperature decay data, and i’m trying to graph \frac{T-T\_a}{T\_0-T\_a} vs t. So i applied a simple mapping: `map(T->(T-Ta)/(df.temp_cº[1]-Ta), df.temp_cº)`, and it gave me this (with two different datasets):
First one is T vs t, second one is \frac{T-T\_a}{T\_0-T\_a} vs t
What could have happened to the red data?
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### Author:  [@rafael.guerra](https://discourse.julialang.org/u/rafael.guerra)
#### Post date: [October 9, 2025, 11:54am UTC](https://discourse.julialang.org/t/plot-gets-jumbled-up-when-a-map-is-applied/132995/2 "2025-10-09T11:54:38Z")
This does not seem to be a plotting issue, but rather an issue with the input data.
Could you provide a MWE?
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### Author:  [@Quantodeluz](https://discourse.julialang.org/u/Quantodeluz)
#### Post date: [October 9, 2025, 8:48pm UTC](https://discourse.julialang.org/t/plot-gets-jumbled-up-when-a-map-is-applied/132995/3 "2025-10-09T20:48:11Z")
I found the problem, i was using the data from the first df for the map of the second. Easy fix, now everything works as intended.
Sorry to bother you 😅