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209 Strings
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5,958 Words
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38,078 Characters
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Strings Words Characters
209 5,958 38,078
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209 5,958 38,078
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209 5,958 38,078
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2 2 22
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Component Translated Unfinished Unfinished words Unfinished characters Untranslated Checks Suggestions Comments
about_data 2% 92 780 5,218 92
backup 1% 71 1,694 10,639 71
creating_db 8% 21 324 2,132 21
index CC-BY-3.0-US 82% 5 15 163 5 1
installation CC-BY-3.0-US
introduction 1% 120 2,006 13,988 120 2
loading_data 2% 71 1,601 10,403 71
simple_sql 2% 33 597 3,990 33
welcome 8% 22 315 1,925 22
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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
Translation license Creative Commons Attribution 3.0 United States
Translation process
  • Translations can be made directly.
  • Translation suggestions can be made.
  • Any authenticated user can contribute.
  • The translation uses bilingual files.
Source code repository https://github.com/postgis/postgis-workshops.git
Repository branch master
Last remote commit Update sql cheat sheet with makevalid example 5f99414
Paul Ramsey authored 10/30/2025
Last commit in Weblate Translated using Weblate (Spanish) 60517ef
juan sebastian jimenez aldana authored 10/24/2025
Weblate repository https://weblate.osgeo.org/git/postgis-workshop/index/
File mask postgis-intro/sources/locale/*/LC_MESSAGES/rasters.po
Translation file Download postgis-intro/sources/locale/ko/LC_MESSAGES/rasters.po
Last change Nov. 2, 2024, 10:35 p.m.
Last change made by None
Language Korean
Language code ko
Text direction Left to right
Case sensitivity Case-insensitive
Number of speakers 79,278,717
Number of plurals 1
Plural type None
Plurals
Plural formula 0
02/14/2026

String statistics

Strings percent Hosted strings Words percent Hosted words Characters percent Hosted characters
Total 209 5,958 38,078
Translated 0% 0 0% 0 0% 0
Needs editing 0% 0 0% 0 0% 0
Read-only 0% 0 0% 0 0% 0
Failing checks 0% 0 0% 0 0% 0
Strings with suggestions 1% 2 1% 2 1% 22
Untranslated strings 100% 209 100% 5,958 100% 38,078
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User avatar None

Resource updated
The “postgis-intro/sources/locale/ko/LC_MESSAGES/rasters.po” file was changed. 11/02/2024
User avatar None

String added in the repository
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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String added in the repository
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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The :command:`raster2pgsql` tool is similar to the :command:`shp2gpsql` except instead of loading ESRI shapefiles into PostGIS geometry/geography tables, it loads any GDAL supported raster format into raster tables. Just like :command:`shp2pgsql` you can pass it a spatial reference id (SRID) of the source. Unlike :command:`shp2pgsql` it can infer the spatial references system of the source data if your source data has suitable metadata.
 
11/02/2024
User avatar anonymous

Suggestion added
ST_Histogram
ST_Histogram
05/21/2023
User avatar anonymous

Suggestion added
Statistics
통계
05/21/2023
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Resource updated
The “postgis-intro/sources/locale/ko/LC_MESSAGES/rasters.po” file was changed. 03/17/2023
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String updated in the repository
The only problem with the aforementioned :command:`ST_Transform` approach is that when you transform, the transformed often exists in other tiles. If you looked at the above output closely enough by outputting the convex hull of the rasters, in the next example you'd see annoying overlaps around the borders.
 
03/17/2023
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