# Structuring variance of gterms prior in brms

**URL:** <https://discourse.mc-stan.org/t/structuring-variance-of-gterms-prior-in-brms/39593>\
**Category:** Modeling\
**Tags:** fitting-issues, brms\
**Created:** [May 28, 2025, 4:48pm UTC](https://discourse.mc-stan.org/t/structuring-variance-of-gterms-prior-in-brms/39593 "2025-05-28T16:48:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![pdrvm](https://avatars.discourse-cdn.com/v4/letter/p/b19c9b/32.png) [@pdrvm](https://discourse.mc-stan.org/u/pdrvm)\
**Post date:** [May 28, 2025, 4:48pm UTC](https://discourse.mc-stan.org/t/structuring-variance-of-gterms-prior-in-brms/39593/1 "2025-05-28T16:48:46Z")

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In brms, the gterms have a Gaussian prior. Is it possible to specify the variance for that Guassian prior as a nonlinear function of covariates?