# Fitting Data

**URL:** <https://discourse.julialang.org/t/fitting-data/50938>\
**Category:** General Usage\
**Tags:** data, dataframes, fit\
**Created:** [November 29, 2020, 3:06pm UTC](https://discourse.julialang.org/t/fitting-data/50938 "2020-11-29T15:06:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![WEEZEERAE](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/weezeerae/32/8918_2.png) [@WEEZEERAE](https://discourse.julialang.org/u/WEEZEERAE)\
**Post date:** [November 29, 2020, 3:06pm UTC](https://discourse.julialang.org/t/fitting-data/50938/1 "2020-11-29T15:06:56Z")

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Hello Community!

I would like to know about which package you would recommend me to fit data sets, i.e received from a spectral analysis. Currently I am working with GnuPlot, but I guess there is a more accurate way to do that. Anyways, looking forward to your thoughts an recomendations.

Best wishes,  
Ramien

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<div class="post-metadata">

**Author:** ![lmiq](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/lmiq/32/18314_2.png) [@lmiq](https://discourse.julialang.org/u/lmiq)\
**Post date:** [November 29, 2020, 3:40pm UTC](https://discourse.julialang.org/t/fitting-data/50938/2 "2020-11-29T15:40:13Z")

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Probably that depends on the data and what you mean by accurate. But LsqFit is a common option.

> **[GitHub - JuliaNLSolvers/LsqFit.jl: Simple curve fitting in Julia](https://github.com/JuliaNLSolvers/LsqFit.jl)**
>
> Simple curve fitting in Julia. Contribute to JuliaNLSolvers/LsqFit.jl development by creating an account on GitHub.

A simple interface for 2D fits is: [GitHub - m3g/EasyFit.jl: Easy interface for obtaining fits for 2D data](https://github.com/m3g/EasyFit)

For more complex fitting you probably need an optimization package like JuMP or Optim.