# Release announcements for DataFrames.jl

**URL:** <https://discourse.julialang.org/t/release-announcements-for-dataframes-jl/18258>\
**Category:** Data\
**Tags:** announcement, dataframes\
**Created:** [December 3, 2018, 6:06pm UTC](https://discourse.julialang.org/t/release-announcements-for-dataframes-jl/18258 "2018-12-03T18:06:13Z")\
**Posts on this page:** 1\
**Showing post:** 12

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**Author:** ![nalimilan](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nalimilan/32/147_2.png) [@nalimilan](https://discourse.julialang.org/u/nalimilan)\
**Post date:** [December 4, 2018, 10:57am UTC](https://discourse.julialang.org/t/release-announcements-for-dataframes-jl/18258/12 "2018-12-04T10:57:43Z")

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I think categorical arrays are not optimized for only 100 observations per group. The typical ratio would be much higher than that. Do you get the same result with 1000 or 10000?

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