r.quantile doesn't work when called from qgis

[qgib]

Author Name: Daniel Morton (Daniel Morton)
Original Redmine Issue: 21751
Affected QGIS version: 3.4.6
Redmine category:grass

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The grass arguments constructed by qgis have an error, so quantiles are not calculated. This applies to all versions since and including 3.4.6 LTR

Processing algorithm…
Algorithm 'r.quantile' starting…
Input parameters:
{ '-r' : False, 'GRASS_REGION_CELLSIZE_PARAMETER' : 0, 'GRASS_REGION_PARAMETER' : None, 'bins' : 1000000, 'html' : 'C:/Users/danm/AppData/Roaming/QGIS/QGIS3/profiles/default/processing/outputs/report.html', 'input' : 'E:/work/PASSES/output442eafcacec44453adacaabf1318a15a.1.tif', 'percentiles' : '', 'quantiles' : 50 }

g.proj -c proj4="+proj=longlat +datum=WGS84 +no_defs"
r.external input="E:\work\PASSES\output442eafcacec44453adacaabf1318a15a.1.tif" band=1 output="rast_5ca4cf97be96e2" --overwrite -o
g.region n=1.0332871555555554 s=-0.3229443447222222 e=102.42590869527778 w=101.07866034805555 res=0.00022457882100720682
r.quantile input=rast_5ca4cf97be96e2 quantiles=50 bins=1000000 html=- > "C:/Users/danm/AppData/Roaming/QGIS/QGIS3/profiles/default/processing/outputs/report.html" --overwrite
Starting GRASS GIS...
WARNING: Concurrent mapset locking is not supported on Windows
Executing <C:\Users\danm\AppData\Local\Temp\processing_97caa1fd8ae04659b492832728037cb5\grassdata\grass_batch_job.cmd> ...
C:\Windows\System32>chcp 1252 1>NUL
C:\Windows\System32>g.proj -c proj4="+proj=longlat +datum=WGS84 +no_defs"
Default region was updated to the new projection, but if you have multiple mapsets g.region -d should be run in each to update the region from the default
Projection information updated
C:\Windows\System32>r.external input="E:\work\PASSES\output442eafcacec44453adacaabf1318a15a.1.tif" band=1 output="rast_5ca4cf97be96e2" --overwrite -o
Over-riding projection check
Reading band 1 of 1...
Link to raster map <rast_5ca4cf97be96e2> created.
C:\Windows\System32>g.region n=1.0332871555555554 s=-0.3229443447222222 e=102.42590869527778 w=101.07866034805555 res=0.00022457882100720682
C:\Windows\System32>r.quantile input=rast_5ca4cf97be96e2 quantiles=50 bins=1000000 html=- --overwrite 1>"C:/Users/danm/AppData/Roaming/QGIS/QGIS3/profiles/default/processing/outputs/report.html"
Compute quantiles using two passes.
Usage:
r.quantile [-r] input=name [quantiles=value]
[percentiles=value[,value,...]] [bins=value] [file=name] [--overwrite]
[--help] [--verbose] [--quiet] [--ui]
Flags:
-r Generate recode rules based on quantile-defined intervals
Parameters:
input Name of input raster map
quantiles Number of quantiles
default: 4
percentiles List of percentiles
bins Number of bins to use
default: 1000000
file Name for output file (if omitted or "-" output to stdout)
ERROR: r.quantile: Sorry, is not a valid parameter
C:\Windows\System32>exit
Execution of <C:\Users\danm\AppData\Local\Temp\processing_97caa1fd8ae04659b492832728037cb5\grassdata\grass_batch_job.cmd> finished.
Cleaning up temporary files...
Press any key to continue . . .
Execution completed in 38.62 seconds
Results:
{'html': 'C:/Users/danm/AppData/Roaming/QGIS/QGIS3/profiles/default/processing/outputs/report.html'}

[qgib]

Author Name: Pedro Venâncio (Pedro Venâncio)

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I confirm this issue.

The parameter html in

QGIS/python/plugins/processing/algs/grass7/description/r.quantile.txt

Line 9 in 580e7eb

QgsProcessingParameterFileDestination|html|Quantiles|Html files (*.html)|report.html|False

should be file

QgsProcessingParameterFileDestination|file|Quantiles|Html files (*.html)|report.html|False

https://grass.osgeo.org/grass76/manuals/r.quantile.html

[qgib]

Author Name: Jürgen Fischer (@jef-n)

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Applied in changeset f1dbcc3.

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• done_ratio was changed from 0 to 100
• status_id was changed from Open to Closed