Smoothing (vigra) shown in processing but not working (osgeo4w packaging issue?) - Githubissues

Author Name: Alister Hood (@AlisterH) Original Redmine Issue: 17224 Affected QGIS version: 2.18.13 Redmine category:processing/saga Assignee: Victor Olaya

Running QGIS from osgeo4w I tried to use the Saga processing algorithm "Smoothing (vigra)", and got the following:

@\Users\alistair\AppData\Local\Temp\processing3c6f85ae910d4ceb9db91e391d1a23f6\c30f8a4a1a614b97a13520381ccf26e6\OUTPUT.sdat" ____@ @ @##### ## ##### ## @### ### ## ### @### # ## ## #### # ## @### ##### ## # ##### @##### # ## ##### # ##

@ SAGA Version: 2.3.2 (64 bit) @ @ 69 loaded tool libraries (640 tools):

climate_tools
contrib_perego
db_odbc
db_pgsql
docs_html
garden_3d_viewer
garden_fractals
garden_games
garden_learn_to_program
garden_webservices
grid_analysis
grid_calculus
grid_calculus_bsl
grid_filter
grid_gridding
grid_spline
grid_tools
grid_visualisation
imagery_classification
imagery_isocluster
imagery_maxent
imagery_photogrammetry
imagery_segmentation
imagery_svm
imagery_tools
io_esri_e00
io_gdal
io_gps
io_grid
io_grid_image
io_shapes
io_shapes_dxf
io_table
io_virtual
pj_georeference
pj_geotrans
pj_proj4
pointcloud_tools
pointcloud_viewer
shapes_grid
shapes_lines
shapes_points
shapes_polygons
shapes_tools
shapes_transect
sim_cellular_automata
sim_ecosystems_hugget
sim_erosion
sim_fire_spreading
sim_hydrology
sim_ihacres
sim_qm_of_esp
sim_rivflow
statistics_grid
statistics_kriging
statistics_points
statistics_regression
ta_channels
ta_compound
ta_hydrology
ta_lighting
ta_morphometry
ta_preprocessor
ta_profiles
ta_slope_stability
table_calculus
table_tools
tin_tools
tin_viewer @ @type -h or --help for further information @ @Error: select a library @ @C:\OSGeo4W64\bin>exit Converting outputs Loading resulting layers @ @The following layers were not correctly generated. Output You can check the log messages to find more information about the execution of the algorithm @ A bit of googling indicates that vigra is an optional dependency of saga, and I see someone else has this in their list of tool libraries, but I don't:

@- imagery_vigra@

Presumably this means vigra is not included in the osgeo4w build. Is it an oversight? Or is this just the way processing works? i.e. it shows every possible tool, but they may not all be included in a standard install, and the user has to try them to find out. If so, should this this explained somewhere obvious? The error messages are cryptic enough that users are likely to just think "qgis is broken" and move on.

qgis / QGIS

Smoothing (vigra) shown in processing but not working (osgeo4w packaging issue?) #25123