Component Translated Unfinished Unfinished words Unfinished characters Untranslated Checks Suggestions Comments
3d 0 0 0 0 0 0 0
about_data 0 0 0 0 34 0 0
advanced_geometry_construction 0 0 0 0 3 0 0
backup 0 0 0 0 0 0 0
clusterindex 0 0 0 0 1 0 0
creating_db 0 0 0 0 4 0 0
de9im 0 0 0 0 0 0 0
equality 0 0 0 0 0 0 0
geography 0 0 0 0 0 0 0
geography_exercises 0 0 0 0 5 0 0
geometries 0 0 0 0 3 0 0
geometries_exercises 0 0 0 0 10 0 0
geometry_returning 0 0 0 0 0 0 0
geometry_returning_exercises 0 0 0 0 5 0 0
Glossary glossary 1 CC-BY-3.0-US 0 0 0 0 0 0 0
history_tracking 0 0 0 0 0 0 0
index CC-BY-3.0-US 0 0 0 0 3 0 0
indexing 0 0 0 0 1 0 0
installation CC-BY-3.0-US 0 0 0 0 0 0 0
introduction 0 0 0 0 31 0 0
joins 0 0 0 0 0 0 0
joins_advanced 0 0 0 0 0 0 0
joins_exercises 0 0 0 0 8 0 0
knn 0 0 0 0 0 0 0
license 0 0 0 0 0 0 0
linear_referencing 0 0 0 0 0 0 0
loading_data 0 0 0 0 1 0 0
postgis-functions 0 0 0 0 16 0 0
projection 0 0 0 0 0 0 0
projection_exercises 0 0 0 0 8 0 0
rasters CC-BY-3.0-US 0 0 0 0 1 0 0
schemas 0 0 0 0 0 0 0
security 0 0 0 0 1 0 0
simple_sql 0 0 0 0 0 0 0
simple_sql_exercises 0 0 0 0 11 0 0
spatial_relationships 0 0 0 0 3 0 0
spatial_relationships_exercises 0 0 0 0 8 0 0
topology CC-BY-3.0-US 0 0 0 0 0 0 0
tuning 0 0 0 0 0 0 0
upgrades 0 0 0 0 1 0 0
validity 0 0 0 0 0 0 0
welcome 0 0 0 0 1 0 0

Overview

Project website postgis.net/workshops/postgis-intro
Project maintainers User avatar komzpa User avatar dmateos User avatar dkastl User avatar jsanz User avatar andischi User avatar yellow73 User avatar cvvergara User avatar astrid_emde User avatar jef
Translation license CC-BY-3.0-US installation rasters topology glossary 1 index
14 hours ago

String statistics

Strings percent Hosted strings Words percent Hosted words Characters percent Hosted characters
Total 2,011 37,978 252,745
Translated 100% 2,011 100% 37,978 100% 252,745
Needs editing 0% 0 0% 0 0% 0
Read-only 100% 2,011 100% 37,978 100% 252,745
Failing checks 7% 159 1% 757 2% 6,071
Strings with suggestions 0% 0 0% 0 0% 0
Untranslated strings 0% 0 0% 0 0% 0
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Resource updated

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The "postgis-intro/sources/locale/pot/rasters.pot" file was changed. 7 months ago
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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.
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.
7 months ago
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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.
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.
7 months ago
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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.
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.
7 months ago
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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.
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.
7 months ago
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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.
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.
7 months ago
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Resource updated

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The "postgis-intro/sources/locale/pot/indexing.pot" file was changed. 9 months ago
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`geometry_a ~= geometry_b <http://postgis.net/docs/ST_Geometry_Same.html>`_: Returns TRUE if A's bounding box equals B's bounding box.
`geometry_a ~= geometry_b <http://postgis.net/docs/ST_Geometry_Same.html>`_: Returns TRUE if A's bounding box equals B's bounding box.
9 months ago
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`geometry_a = geometry_b <http://postgis.net/docs/ST_Geometry_EQ.html>`_: Before PostGIS 2.4 returns true if A's bounding box is same as B's. From 2.4 on Returns TRUE only if A's geometry is the same as B.
`geometry_a = geometry_b <http://postgis.net/docs/ST_Geometry_EQ.html>`_: Before PostGIS 2.4 returns true if A's bounding box is same as B's. From 2.4 on Returns TRUE only if A's geometry is the same as B.
9 months ago
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In order to add index acceleration to other functions that are not in this list (most commonly, `ST_Relate <http://postgis.net/docs/ST_Relate.html>`_) add an index-only clause as described below.
In order to add index acceleration to other functions that are not in this list (most commonly, `ST_Relate <http://postgis.net/docs/ST_Relate.html>`_) add an index-only clause as described below.
9 months ago
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