# Data container question

**URL:** <https://discourse.pymc.io/t/data-container-question/4564>\
**Category:** Questions\
**Created:** [February 26, 2020, 11:24am UTC](https://discourse.pymc.io/t/data-container-question/4564 "2020-02-26T11:24:03Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![OriolAbril](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/oriolabril/32/2497_2.png) [@OriolAbril](https://discourse.pymc.io/u/OriolAbril)\
**Post date:** [February 26, 2020, 7:13pm UTC](https://discourse.pymc.io/t/data-container-question/4564/2 "2020-02-26T19:13:37Z")

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Currently it is not possible to sample posterior again using data with different shape, for example, see [this issue](https://github.com/pymc-devs/pymc3/issues/3007) (the first comments are relevant, it eventually changed topic).

What is possible is to use `pm.Data` to sample posterior predictive using different data. This feature seems to usually work with some exceptions (e.q. [https://github.com/pymc-devs/pymc3/issues/3640](https://github.com/pymc-devs/pymc3/issues/3640))

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