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Functions that return metadata about the installed and enabled algorithms or processing providers, or about the installed plugins that implement processing providers. See the QGIS docs for a detailed description of the algorithms provided 'out of the box' on QGIS.

Usage

qgis_algorithms(query = FALSE, quiet = TRUE, include_deprecated = TRUE)

qgis_providers(query = FALSE, quiet = TRUE, include_deprecated = TRUE)

qgis_plugins(which = "all", query = FALSE, quiet = TRUE, ...)

Arguments

query

Use TRUE to refresh the cached value.

quiet

Use FALSE to display more information, possibly useful for debugging.

include_deprecated

Logical. Should deprecated algorithms be included?

which

String defining which plugins to select, based on their status in QGIS (enabled or disabled). Must be one of: "all", "enabled", "disabled".

...

Only used by other functions calling this function.

Value

A tibble of algorithms, processing providers or plugins, with metadata.

Details

The include_deprecated argument in qgis_algorithms() does not affect the cached value. The latter always includes deprecated algorithms if these are returned by 'qgis_process' (this requires the JSON output method).

See also

qgis_enable_plugins(), qgis_disable_plugins()

Other topics about information on algorithms & processing providers: qgis_search_algorithms(), qgis_show_help()

Other topics about reporting the QGIS state: has_qgis(), qgis_path(), qgis_using_json_input()

Examples

qgis_algorithms()
#> # A tibble: 362 × 24
#>    provider provider_title algorithm                algorithm_id algorithm_title
#>    <chr>    <chr>          <chr>                    <chr>        <chr>          
#>  1 3d       QGIS (3D)      3d:tessellate            tessellate   Tessellate     
#>  2 gdal     GDAL           gdal:aspect              aspect       Aspect         
#>  3 gdal     GDAL           gdal:assignprojection    assignproje… Assign project…
#>  4 gdal     GDAL           gdal:buffervectors       buffervecto… Buffer vectors 
#>  5 gdal     GDAL           gdal:buildvirtualraster  buildvirtua… Build virtual …
#>  6 gdal     GDAL           gdal:buildvirtualvector  buildvirtua… Build virtual …
#>  7 gdal     GDAL           gdal:cliprasterbyextent  cliprasterb… Clip raster by…
#>  8 gdal     GDAL           gdal:cliprasterbymaskla… cliprasterb… Clip raster by…
#>  9 gdal     GDAL           gdal:clipvectorbyextent  clipvectorb… Clip vector by…
#> 10 gdal     GDAL           gdal:clipvectorbypolygon clipvectorb… Clip vector by…
#> # ℹ 352 more rows
#> # ℹ 19 more variables: provider_can_be_activated <lgl>,
#> #   provider_is_active <lgl>, provider_long_name <chr>, provider_version <chr>,
#> #   provider_warning <chr>, can_cancel <lgl>, deprecated <lgl>, group <chr>,
#> #   has_known_issues <lgl>, help_url <chr>, requires_matching_crs <lgl>,
#> #   short_description <chr>, tags <list>, default_raster_file_extension <chr>,
#> #   default_vector_file_extension <chr>, …
qgis_algorithms(include_deprecated = FALSE)
#> # A tibble: 341 × 24
#>    provider provider_title algorithm                algorithm_id algorithm_title
#>    <chr>    <chr>          <chr>                    <chr>        <chr>          
#>  1 3d       QGIS (3D)      3d:tessellate            tessellate   Tessellate     
#>  2 gdal     GDAL           gdal:aspect              aspect       Aspect         
#>  3 gdal     GDAL           gdal:assignprojection    assignproje… Assign project…
#>  4 gdal     GDAL           gdal:buffervectors       buffervecto… Buffer vectors 
#>  5 gdal     GDAL           gdal:buildvirtualraster  buildvirtua… Build virtual …
#>  6 gdal     GDAL           gdal:buildvirtualvector  buildvirtua… Build virtual …
#>  7 gdal     GDAL           gdal:cliprasterbyextent  cliprasterb… Clip raster by…
#>  8 gdal     GDAL           gdal:cliprasterbymaskla… cliprasterb… Clip raster by…
#>  9 gdal     GDAL           gdal:clipvectorbyextent  clipvectorb… Clip vector by…
#> 10 gdal     GDAL           gdal:clipvectorbypolygon clipvectorb… Clip vector by…
#> # ℹ 331 more rows
#> # ℹ 19 more variables: provider_can_be_activated <lgl>,
#> #   provider_is_active <lgl>, provider_long_name <chr>, provider_version <chr>,
#> #   provider_warning <chr>, can_cancel <lgl>, deprecated <lgl>, group <chr>,
#> #   has_known_issues <lgl>, help_url <chr>, requires_matching_crs <lgl>,
#> #   short_description <chr>, tags <list>, default_raster_file_extension <chr>,
#> #   default_vector_file_extension <chr>, …
qgis_providers()
#> # A tibble: 4 × 3
#>   provider provider_title    algorithm_count
#>   <chr>    <chr>                       <int>
#> 1 gdal     GDAL                           56
#> 2 qgis     QGIS                           42
#> 3 3d       QGIS (3D)                       1
#> 4 native   QGIS (native c++)             263
qgis_plugins(quiet = FALSE)
#> Reading plugin list from the qgisprocess cache.
#>   If you changed plugin availability or status in the QGIS GUI since you loaded the
#>   qgisprocess package, then you must run `qgis_configure()` or reload the package
#>   to capture these changes.
#> 1 out of 3 available processing provider plugins are enabled.
#> # A tibble: 3 × 2
#>   name                    enabled
#>   <chr>                   <lgl>  
#> 1 grassprovider           FALSE  
#> 2 processing              TRUE   
#> 3 processing_saga_nextgen FALSE  
qgis_plugins(which = "disabled")
#> # A tibble: 2 × 2
#>   name                    enabled
#>   <chr>                   <lgl>  
#> 1 grassprovider           FALSE  
#> 2 processing_saga_nextgen FALSE