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Overview

Project website postgis.net/workshops/postgis-intro
Project maintainers User avatar jef 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
Translation license Creative Commons Attribution 3.0 United States
Translation process
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  • The translation uses bilingual files.
Source code repository https://github.com/postgis/postgis-workshops.git
Repository branch master
Last remote commit Add link to html Swedish translation 524c211
Regina Obe authored yesterday
Last commit in Weblate Translated using Weblate (Swedish) 26ee1ce
Daniel Nylander authored yesterday
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/sv/LC_MESSAGES/rasters.po
Last change June 6, 2025, 6:30 a.m.
Last author None
yesterday

String statistics

Strings percent Hosted strings Words percent Hosted words Characters percent Hosted characters
Total 209 5,958 38,078
Translated 100% 209 100% 5,958 100% 38,078
Needs editing 0% 0 0% 0 0% 0
Read-only 0% 0 0% 0 0% 0
Failing checks 1% 4 1% 113 1% 694
Strings with suggestions 0% 0 0% 0 0% 0
Untranslated strings 0% 0 0% 0 0% 0
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`raster2pgsql <https://postgis.net/docs/using_raster_dataman.html#RT_Raster_Loader>`_ is a command-line tool often packaged with PostGIS. If you are on windows and used application stackbuilder PostGIS Bundle, you'll find :command:`raster2pgsql.exe` in the folder ``C:\Program Files\PostgreSQL\15\bin`` where the *15* should be replaced with the version of PostgreSQL you are running.
`raster2pgsql <https://postgis.net/docs/using_raster_dataman.html#RT_Raster_Loader>`_ är ett kommandoradsverktyg som ofta paketeras med PostGIS. Om du är på Windows och använde applikationsstackbuilder PostGIS Bundle, hittar du :command:`raster2pgsql.exe` i mappen `` C: \ Program Files \ PostgreSQL \ 15 \ bin`` där * 15 * ska ersättas med den version av PostgreSQL du kör.
yesterday
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Translation changed

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Loading Rasters using raster2pgsql
Laddaäs in raster med hjälp av raster2pgsql
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Outputs:
Utgångarmatning:
yesterday
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2. Using the `PostgreSQL ROWS FROM constructor <https://www.postgresql.org/docs/current/queries-table-expressions.html#QUERIES-TABLEFUNCTIONS>`_ , and aliasing each set of columns from our function output with names. So for example the band 1 columns (geom, val, x, y) are renamed to g1, v1, x1, x2
2. Använda `PostgreSQL ROWS FROM-konstruktören <https://www.postgresql.org/docs/current/queries-table-expressions.html#QUERIES-TABLEFUNCTIONS>`_ och aliasera varje uppsättning kolumner från vår funktionsutgångdata med namn. Så till exempel byter band 1-kolumnerna (geom, val, x, y) namn till g1, v1, x1, x2
yesterday
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One caveat, by default all different raster types outputs are disabled. In order to utilize these, you'll need to enable drivers, all or a subset as detailed in `Enable GDAL Raster drivers <https://postgis.net/docs/postgis_gdal_enabled_drivers.html>`_
En varning, som standard är alla olika utgåmatningar för rastertyper inaktiverade. För att kunna använda dessa måste du aktivera drivrutiner, alla eller en delmängd enligt beskrivningen i `Aktivera GDAL Raster-drivrutiner <https://postgis.net/docs/postgis_gdal_enabled_drivers.html>`_
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Which tells we have a lot of pixels and our max elevation is 411 ft.
Det betyder att vi har många pixlabildpunkter och att vår maxhöjd är 411 fot.
yesterday
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Note that it doesn't return a single geometry, because it finds continguous set of pixels with the same value that form a polygon. Even though all these values are the same, they are not continguous.
Observera att den inte returnerar en enda geometri, eftersom den hittar en kontinuerlig uppsättning pixlabildpunkter med samma värde som bildar en polygon. Även om alla dessa värden är desamma är de inte kontinuerliga.
yesterday
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Translation replaced

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A commonly used function that outputs geomvals is `ST_DumpAsPolygons <https://postgis.net/docs/RT_ST_DumpAsPolygons.html>`_, which returns a set of contiguous pixels with the same value as a polygon. Again this by default will only check band 1 and exclude no data values unless you override. This example selects only polygons from band 2. You can also apply filters to the values. For most use cases, :command:`ST_DumpAsPolygons` is a better option than :command:`ST_PixelAsPolygons` as it will return far fewer rows.
En vanligt förekommande funktion som ger ut geomval är `ST_DumpAsPolygons <https://postgis.net/docs/RT_ST_DumpAsPolygons.html>`_, som returnerar en uppsättning sammanhängande pixlabildpunkter med samma värde som en polygon. Återigen kommer detta som standard endast att kontrollera band 1 och utesluta inga datavärden om du inte åsidosätter. I det här exemplet väljs endast polygoner från band 2. Du kan också tillämpa filter på värdena. För de flesta användningsfall är :command:`ST_DumpAsPolygons` ett bättre alternativ än :command:`ST_PixelAsPolygons` eftersom det kommer att returnera mycket färre rader.
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