Summary

Project website postgis.net/workshops/postgis-intro
Project maintainers9 User avatar cvvergaraUser avatar dkastlUser avatar komzpaUser avatar astrid_emdeUser avatar dmateosUser avatar jsanzUser avatar andischiUser avatar jefUser avatar yellow73
Language Korean
Language code ko
Text direction Left to right
Case sensitivity Case-insensitive
Number of speakers 79,278,717
03/22/2026

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Total 747 14,340 94,727
Translated 8% 60 3% 519 4% 3,852
Needs editing 1% 5 1% 15 1% 163
Read-only 0% 0 0% 0 0% 0
Failing checks 1% 5 1% 15 1% 163
Strings with suggestions 1% 14 1% 21 1% 132
Untranslated strings 91% 682 96% 13,806 95% 90,712
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Suggestion added
Mandatory files:
필수 필드
03/08/2026
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GML
GML2
03/03/2026
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What is a Spatial Database?
공간 데이터베이스 생성
02/22/2026
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Resource updated
The “postgis-intro/sources/locale/ko/LC_MESSAGES/about_data.po” file was changed. 06/10/2025
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Number of records: 38794
 
06/10/2025
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Resource updated
The “postgis-intro/sources/locale/ko/LC_MESSAGES/rasters.po” file was changed. 11/02/2024
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People have the habit of jumping to :command:`ST_MapAlgebra`, probably because the name sounds so cool and sophisticated. Who wouldn't want to tell their friends? *I'm using a function called ST_MapAlgebra.* My advice, explore other functions before you pull out that shotgun. Your life will be simpler and your performance will be 100 times better, and your code will be shorter.
 
11/02/2024
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Map algebra is the idea that you can do math on your pixel values. The :command:`ST_Union` and :command:`ST_Intersection` functions covered earlier are a special fast case of map algebra. Then there are the `ST_MapAlgebra <https://postgis.net/docs/RT_ST_MapAlgebra.html>`_ family of functions which allow you to define your own crazy math, but at cost of performance.
 
11/02/2024
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By default ST_Clip will leave out pixels where the centroid of the pixel doesn't intersect the geometry. This can be annoying for big pixels and you may prefer to instead, include a pixel if any part of the pixel touches the geometry. Introduced in PostGIS 3.5, is the touched argument. Replace your `ST_Clip(r.rast, g.geom)` with `ST_Clip(r.rast, g.geom, touched => true)` and voila any pixels that intersect your geometry in any way will be included.
 
11/02/2024
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The `overview_factor` tells you at what resolution the row is with respect to it's parent. An `overview_factor` of `2` means that 2x2 = 4 tiles can fit into one overview_2 tile. Similarly an overview_factor of `3` meants that 2x2x2 = 8 tiles of the original can be shoved into an overview_3 tile.
 
11/02/2024
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