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

[Hernán De Angelis]

On 2021-03-02 10:21, Nyall Dawson wrote:
> 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

Thanks for this,

from osgeo import gdal

just works, so I guess it is 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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