# Could Someone Give me Advice on Implementing Custom AstroPy Function for Spectral Data Analysis?

**URL:** <https://community.openastronomy.org/t/could-someone-give-me-advice-on-implementing-custom-astropy-function-for-spectral-data-analysis/1157>\
**Category:** OpenAstronomy\
**Tags:** astropy, question\
**Created:** [November 27, 2024, 9:47am UTC](https://community.openastronomy.org/t/could-someone-give-me-advice-on-implementing-custom-astropy-function-for-spectral-data-analysis/1157 "2024-11-27T09:47:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![roberrttt](https://dub1.discourse-cdn.com/flex005/user_avatar/community.openastronomy.org/roberrttt/32/596_2.png) [@roberrttt](https://community.openastronomy.org/u/roberrttt)\
**Post date:** [November 27, 2024, 9:47am UTC](https://community.openastronomy.org/t/could-someone-give-me-advice-on-implementing-custom-astropy-function-for-spectral-data-analysis/1157/1 "2024-11-27T09:47:01Z")

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Hello there, 👋

I am working on a project that involves analyzing a large dataset of stellar spectra; and I am using AstroPy extensively for data manipulation. While the built in tools have been incredibly helpful; I have hit a point where I need a custom function to better handle a specific type of data processing, and I am unsure how to implement it efficiently.

I have a collection of FITS files containing spectral data, and I need to apply a custom smoothing algorithm that is a bit different from the standard convolution or Gaussian smoothing.

I am looking to create a function that applies a variable width smoothing kernel based on the wavelength dependent noise level, which varies across the spectrum.

What is the best way to define a custom smoothing kernel that dynamically adjusts based on wavelength? 🤔 Are there any examples of integrating custom kernels with AstroPy’s convolution module?

How can I efficiently apply this custom function to large datasets without running into memory issues? 🤔 Are there AstroPy native methods that could help optimize performance?

Also, I have gone through this post; [https://community.openastronomy.org/t/retrieve-and-open-a-cube-from-astropy-data-pvdiagramplotting-](https://community.openastronomy.org/t/retrieve-and-open-a-cube-from-astropy-data-pvdiagramplotting-tutorial/423)[tableau](https://www.igmguru.com/data-science-bi/tableau-training) which definitely helped me out a lot.

Has anyone here implemented a similar solution; or could you point me to any resources or existing projects that tackle custom spectral data processing?

Thanks in advance for your help and assistance. 😇