# Efficiently check if points are contained in polygons

**URL:** <https://discourse.julialang.org/t/efficiently-check-if-points-are-contained-in-polygons/74415>\
**Category:** Geo\
**Tags:** question\
**Created:** [January 11, 2022, 5:50pm UTC](https://discourse.julialang.org/t/efficiently-check-if-points-are-contained-in-polygons/74415 "2022-01-11T17:50:09Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![ahmoreira](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ahmoreira/32/32661_2.png) [@ahmoreira](https://discourse.julialang.org/u/ahmoreira)\
**Post date:** [January 12, 2022, 7:20pm UTC](https://discourse.julialang.org/t/efficiently-check-if-points-are-contained-in-polygons/74415/5 "2022-01-12T19:20:26Z")

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Thank you for your reply! I will change the array data type. Thank you for pointing out these C packages, do you know where to find tutorials for them? For now I will focus on learning Julia, but it would be nice to have a look at these packages.

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