[QGIS-Developer] Voronoi tool missing from processing, what could be wrong?

[Nyall Dawson]

On Tue, 2 Mar 2021 at 18:34, Hernán De Angelis
<variablestarlight at gmail.com> wrote:
>
> Hi,
>
> I wrote about this a few days ago in the user list but I still have the
> problem and can find neither a cause nor a solution. I thus post it in
> this list in the hope that some developer may have a hint on what is
> going wrong here.

Double check that you have the gdal python packages installed

Nyall

>
> In my installation the Voronoi Polygon tool is missing from the
> Processing menu, both from the bar (vector geometry dialog) and the
> processing panel. It is also not listed in the Python console (see below
> whole listing).
>
> But, the code seems to be present in the /usr/local/share... folder,
> where other plugins live as well:
>
> localhost:/usr/local # find ./share -name *oronoi*
> ./share/qgis/python/plugins/processing/algs/grass7/description/v.voronoi.skeleton.txt
> ./share/qgis/python/plugins/processing/algs/grass7/description/v.voronoi.txt
> ./share/qgis/python/plugins/processing/algs/grass7/ext/v_voronoi.py
> ./share/qgis/python/plugins/processing/algs/qgis/VoronoiPolygons.py
> ./share/qgis/python/plugins/processing/algs/qgis/voronoi.py
>
> I compile QGIS from source, things have gone smoothly every time and I
> cannot see any obvious particular problem. I have tested with master a
> couple of weeks ago, then 3.18.0 a couple of days ago, and moments ago
> with 3.16.4 (after wiping all traces of previous installations) but the
> problem persists.
>
> Anyone has seen this? What could possibly be wrong here?
>
> Thanks in advance,
>
> Hernán
>
>
> - - - - -
>
> from qgis import processing
> for alg in QgsApplication.processingRegistry().algorithms():
>      print(alg.id(), "->", alg.displayName())
>
> native:addautoincrementalfield -> Add autoincremental field
> native:addfieldtoattributestable -> Add field to attributes table
> native:adduniquevalueindexfield -> Add unique value index field
> native:addxyfields -> Add X/Y fields to layer
> native:affinetransform -> Affine transform
> native:aggregate -> Aggregate
> native:angletonearest -> Align points to features
> native:antimeridiansplit -> Geodesic line split at antimeridian
> native:arrayoffsetlines -> Array of offset (parallel) lines
> native:arraytranslatedfeatures -> Array of translated features
> native:aspect -> Aspect
> native:assignprojection -> Assign projection
> native:atlaslayouttoimage -> Export atlas layout as image
> native:atlaslayouttopdf -> Export atlas layout as PDF
> native:bookmarkstolayer -> Convert spatial bookmarks to layer
> native:boundary -> Boundary
> native:boundingboxes -> Bounding boxes
> native:buffer -> Buffer
> native:bufferbym -> Variable width buffer (by M value)
> native:calculatevectoroverlaps -> Overlap analysis
> native:categorizeusingstyle -> Create categorized renderer from styles
> native:cellstatistics -> Cell statistics
> native:centroids -> Centroids
> native:clip -> Clip
> native:collect -> Collect geometries
> native:combinestyles -> Combine style databases
> native:condition -> Conditional branch
> native:converttocurves -> Convert to curved geometries
> native:convexhull -> Convex hull
> native:countpointsinpolygon -> Count points in polygon
> native:createattributeindex -> Create attribute index
> native:createconstantrasterlayer -> Create constant raster layer
> native:createdirectory -> Create directory
> native:creategrid -> Create grid
> native:createpointslayerfromtable -> Create points layer from table
> native:createrandombinomialrasterlayer -> Create random raster layer
> (binomial distribution)
> native:createrandomexponentialrasterlayer -> Create random raster layer
> (exponential distribution)
> native:createrandomgammarasterlayer -> Create random raster layer (gamma
> distribution)
> native:createrandomgeometricrasterlayer -> Create random raster layer
> (geometric distribution)
> native:createrandomnegativebinomialrasterlayer -> Create random raster
> layer (negative binomial distribution)
> native:createrandomnormalrasterlayer -> Create random raster layer
> (normal distribution)
> native:createrandompoissonrasterlayer -> Create random raster layer
> (poisson distribution)
> native:createrandomuniformrasterlayer -> Create random raster layer
> (uniform distribution)
> native:createspatialindex -> Create spatial index
> native:dbscanclustering -> DBSCAN clustering
> native:deleteduplicategeometries -> Delete duplicate geometries
> native:deleteholes -> Delete holes
> native:densifygeometries -> Densify by count
> native:densifygeometriesgivenaninterval -> Densify by interval
> native:detectvectorchanges -> Detect dataset changes
> native:difference -> Difference
> native:dissolve -> Dissolve
> native:dropgeometries -> Drop geometries
> native:dropmzvalues -> Drop M/Z values
> native:equaltofrequency -> Equal to frequency
> native:explodehstorefield -> Explode HStore Field
> native:explodelines -> Explode lines
> native:extendlines -> Extend lines
> native:extenttolayer -> Create layer from extent
> native:extractbinary -> Extract binary field
> native:extractbyattribute -> Extract by attribute
> native:extractbyexpression -> Extract by expression
> native:extractbyextent -> Extract/clip by extent
> native:extractbylocation -> Extract by location
> native:extractmvalues -> Extract M values
> native:extractspecificvertices -> Extract specific vertices
> native:extractvertices -> Extract vertices
> native:extractzvalues -> Extract Z values
> native:fieldcalculator -> Field calculator
> native:filedownloader -> Download file
> native:fillnodata -> Fill NoData cells
> native:filter -> Feature filter
> native:filterbygeometry -> Filter by geometry type
> native:filterlayersbytype -> Filter layers by type
> native:filterverticesbym -> Filter vertices by M value
> native:filterverticesbyz -> Filter vertices by Z value
> native:fixgeometries -> Fix geometries
> native:flattenrelationships -> Flatten relationship
> native:forcerhr -> Force right-hand-rule
> native:fuzzifyrastergaussianmembership -> Fuzzify raster (gaussian
> membership)
> native:fuzzifyrasterlargemembership -> Fuzzify raster (large membership)
> native:fuzzifyrasterlinearmembership -> Fuzzify raster (linear membership)
> native:fuzzifyrasternearmembership -> Fuzzify raster (near membership)
> native:fuzzifyrasterpowermembership -> Fuzzify raster (power membership)
> native:fuzzifyrastersmallmembership -> Fuzzify raster (small membership)
> native:generatepointspixelcentroidsinsidepolygons -> Generate points
> (pixel centroids) inside polygons
> native:geometrybyexpression -> Geometry by expression
> native:greaterthanfrequency -> Greater than frequency
> native:highestpositioninrasterstack -> Highest position in raster stack
> native:hillshade -> Hillshade
> native:hublines -> Join by lines (hub lines)
> native:importphotos -> Import geotagged photos
> native:interpolatepoint -> Interpolate point on line
> native:intersection -> Intersection
> native:joinattributesbylocation -> Join attributes by location
> native:joinattributestable -> Join attributes by field value
> native:joinbynearest -> Join attributes by nearest
> native:kmeansclustering -> K-means clustering
> native:layertobookmarks -> Convert layer to spatial bookmarks
> native:lessthanfrequency -> Less than frequency
> native:linedensity -> Line density
> native:lineintersections -> Line intersections
> native:linesubstring -> Line substring
> native:loadlayer -> Load layer into project
> native:lowestpositioninrasterstack -> Lowest position in raster stack
> native:meancoordinates -> Mean coordinate(s)
> native:mergelines -> Merge lines
> native:mergevectorlayers -> Merge vector layers
> native:minimumenclosingcircle -> Minimum enclosing circles
> native:multiparttosingleparts -> Multipart to singleparts
> native:multiringconstantbuffer -> Multi-ring buffer (constant distance)
> native:nearestneighbouranalysis -> Nearest neighbour analysis
> native:offsetline -> Offset lines
> native:orderbyexpression -> Order by expression
> native:orientedminimumboundingbox -> Oriented minimum bounding box
> native:orthogonalize -> Orthogonalize
> native:package -> Package layers
> native:pixelstopoints -> Raster pixels to points
> native:pixelstopolygons -> Raster pixels to polygons
> native:pointonsurface -> Point on surface
> native:pointsalonglines -> Points along geometry
> native:pointtolayer -> Create layer from point
> native:poleofinaccessibility -> Pole of inaccessibility
> native:polygonfromlayerextent -> Extract layer extent
> native:polygonize -> Polygonize
> native:polygonstolines -> Polygons to lines
> native:postgisexecutesql -> PostgreSQL execute SQL
> native:printlayoutmapextenttolayer -> Print layout map extent to layer
> native:printlayouttoimage -> Export print layout as image
> native:printlayouttopdf -> Export print layout as PDF
> native:projectpointcartesian -> Project points (Cartesian)
> native:promotetomulti -> Promote to multipart
> native:raiseexception -> Raise exception
> native:raisewarning -> Raise warning
> native:randomextract -> Random extract
> native:randompointsinextent -> Random points in extent
> native:randompointsinpolygons -> Random points in polygons
> native:randompointsonlines -> Random points on lines
> native:rasterbooleanand -> Raster boolean AND
> native:rasterize -> Convert map to raster
> native:rasterlayerstatistics -> Raster layer statistics
> native:rasterlayeruniquevaluesreport -> Raster layer unique values report
> native:rasterlayerzonalstats -> Raster layer zonal statistics
> native:rasterlogicalor -> Raster boolean OR
> native:rastersampling -> Sample raster values
> native:rastersurfacevolume -> Raster surface volume
> native:reclassifybylayer -> Reclassify by layer
> native:reclassifybytable -> Reclassify by table
> native:rectanglesovalsdiamonds -> Rectangles, ovals, diamonds
> native:refactorfields -> Refactor fields
> native:removeduplicatesbyattribute -> Delete duplicates by attribute
> native:removeduplicatevertices -> Remove duplicate vertices
> native:removenullgeometries -> Remove null geometries
> native:renamelayer -> Rename layer
> native:renametablefield -> Rename field
> native:repairshapefile -> Repair Shapefile
> native:reprojectlayer -> Reproject layer
> native:rescaleraster -> Rescale raster
> native:reverselinedirection -> Reverse line direction
> native:rotatefeatures -> Rotate
> native:roundrastervalues -> Round raster
> native:ruggednessindex -> Ruggedness index
> native:savefeatures -> Save vector features to file
> native:savelog -> Save log to file
> native:saveselectedfeatures -> Extract selected features
> native:segmentizebymaxangle -> Segmentize by maximum angle
> native:segmentizebymaxdistance -> Segmentize by maximum distance
> native:selectbylocation -> Select by location
> native:serviceareafromlayer -> Service area (from layer)
> native:serviceareafrompoint -> Service area (from point)
> native:setlayerencoding -> Set layer encoding
> native:setlayerstyle -> Set layer style
> native:setmfromraster -> Set M value from raster
> native:setmvalue -> Set M value
> native:setprojectvariable -> Set project variable
> native:setzfromraster -> Drape (set Z value from raster)
> native:setzvalue -> Set Z value
> native:shortestpathlayertopoint -> Shortest path (layer to point)
> native:shortestpathpointtolayer -> Shortest path (point to layer)
> native:shortestpathpointtopoint -> Shortest path (point to point)
> native:shpencodinginfo -> Extract Shapefile encoding
> native:simplifygeometries -> Simplify
> native:singlesidedbuffer -> Single sided buffer
> native:slope -> Slope
> native:smoothgeometry -> Smooth
> native:snapgeometries -> Snap geometries to layer
> native:snappointstogrid -> Snap points to grid
> native:spatialiteexecutesql -> SpatiaLite execute SQL
> native:spatialiteexecutesqlregistered -> SpatiaLite execute SQL
> (registered DB)
> native:splitfeaturesbycharacter -> Split features by character
> native:splitlinesbylength -> Split lines by maximum length
> native:splitvectorlayer -> Split vector layer
> native:splitwithlines -> Split with lines
> native:stringconcatenation -> String concatenation
> native:stylefromproject -> Create style database from project
> native:subdivide -> Subdivide
> native:sumlinelengths -> Sum line lengths
> native:swapxy -> Swap X and Y coordinates
> native:symmetricaldifference -> Symmetrical difference
> native:taperedbuffer -> Tapered buffers
> native:tinmeshcreation -> TIN Mesh Creation
> native:transect -> Transect
> native:translategeometry -> Translate
> native:truncatetable -> Truncate table
> native:union -> Union
> native:wedgebuffers -> Create wedge buffers
> native:writevectortiles_mbtiles -> Write Vector Tiles (MBTiles)
> native:writevectortiles_xyz -> Write Vector Tiles (XYZ)
> native:zonalhistogram -> Zonal histogram
> native:zonalstatistics -> Zonal statistics
> native:zonalstatisticsfb -> Zonal statistics
>
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