# BRMS family

**URL:** <https://discourse.mc-stan.org/t/brms-family/25957>\
**Category:** brms\
**Created:** [January 13, 2022, 3:30pm UTC](https://discourse.mc-stan.org/t/brms-family/25957 "2022-01-13T15:30:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ahmedshovon](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/ahmedshovon/32/9050_2.png) [@ahmedshovon](https://discourse.mc-stan.org/u/ahmedshovon)\
**Post date:** [January 13, 2022, 3:30pm UTC](https://discourse.mc-stan.org/t/brms-family/25957/1 "2022-01-13T15:30:53Z")

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Short summary of the problem  
I have a data contains lot of values close to zero. The data also have both positive and negative values. i tried gaussian family with identity link and zero inflated asymmetric laplace distribution, however, neither produces good posterior predictive check plots.

```
![Rplot02|566x500](upload://z3BxZ845KxdaJ2p4YdLyEDglakM.jpeg)
![Rplot03|566x500](upload://k0rCfZntl8liMFBC4ImlpnK7Esd.jpeg)
```

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**Author:** ![jsocolar](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/jsocolar/32/2486_2.png) [@jsocolar](https://discourse.mc-stan.org/u/jsocolar)\
**Post date:** [January 14, 2022, 2:58am UTC](https://discourse.mc-stan.org/t/brms-family/25957/2 "2022-01-14T02:58:33Z")

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The plots didn’t come through for me. Additionally could you please include what your call to `brm` looks like?