# Speed up ArchGDAL.contains for thousands of data

**URL:** <https://discourse.julialang.org/t/speed-up-archgdal-contains-for-thousands-of-data/77847>\
**Category:** Geo\
**Created:** [March 14, 2022, 6:29am UTC](https://discourse.julialang.org/t/speed-up-archgdal-contains-for-thousands-of-data/77847 "2022-03-14T06:29:45Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Frankiewaang](https://avatars.discourse-cdn.com/v4/letter/f/f9ae1b/32.png) [@Frankiewaang](https://discourse.julialang.org/u/Frankiewaang)\
**Post date:** [March 14, 2022, 7:43am UTC](https://discourse.julialang.org/t/speed-up-archgdal-contains-for-thousands-of-data/77847/2 "2022-03-14T07:43:16Z")

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Sorry guys, it seems to be a replicated question, I would Try using `GMT.jl` first.

> [@Efficiently check if points are contained in polygons](https://discourse.julialang.org/t/efficiently-check-if-points-are-contained-in-polygons/74415/5):
>
> 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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