Hi devs, does anyone have an idea how to fix this issue in QGIS processing?
Thanks Markus ---------- Forwarded message --------- From: <[email protected]> Date: Fr., 31. Aug. 2018, 22:38 Subject: [QGIS Application - Bug report #19733] v.rast.stats is broken due to parsing error of double underscore in column names To: Issue #19733 has been updated by Markus Neteler. I suspect that the underscore parsing error happens in plugins/processing/algs/grass7/Grass7Algorithm.py around line 553. ---------------------------------------- Bug report #19733: v.rast.stats is broken due to parsing error of double underscore in column names http://issues.qgis.org/issues/19733#change-92384 * Author: Markus Neteler * Status: Open * Priority: Normal * Assignee: * Category: Processing/GRASS * Affected QGIS version: 3.2.2 * Operating System: All * Pull Request or Patch supplied: No * Crashes QGIS or corrupts data: No * Regression?: No * Easy fix?: No * Resolution: ---------------------------------------- Processing > GRASS 7 > v.rast.stats is not functional (reported also in several forums [1]). The reason is apparently a parse error since column names have multiple "_". When reducing the statistical measures to those without underscore (e.g."sum") it works. When having "percentile" is doesn't since the percentile value is transferred via underscore, e.g. "percentile=95" becomes "percentile_95" which is not parsed properly in QGIS processing. By default all measure are active, i.e. number,minimum,maximum,range,average,stddev,variance,coeff_var,sum,first_quartile,median,third_quartile,percentile Issue is in both QGIS 2.18.x as well as 3.2.x. Log: Algorithmus v.rast.stats - Calculates univariate statistics from a raster map based on vector polygons and uploads statistics to new attribute columns. startet... g.proj -c proj4="+proj=sterea +lat_0=52.15616055555555 +lon_0=5.38763888888889 +k=0.9999079 +x_0=155000 +y_0=463000 +ellps=bessel +towgs84=565.2369,50.0087,465.658,-0.406857,0.350733,-1.87035,4.0812 +units=m +no_defs" v.in.ogr min_area=0.0001 snap=-1 input="/home/user/geodata_dav/mundialis_daten/projekte/who_geodata/data/Districts" layer=Districts output=tmp15356101025715 --overwrite -o r.external input="/home/user/ES5_TemperatureCoolingModul/actualT_dailymean.tif" band=1 output=tmp15356101025716 --overwrite -o g.region n=322441.565 s=312777.529 e=180172.152 w=172817.428 res=10.0064272109 v.rast.stats -c map="tmp15356101025715" raster="tmp15356101025716" column_prefix="s" method="third_quartile,percentile" percentile="2" --overwrite v.out.ogr --overwrite -s -e input=tmp15356101025715 output="/tmp/processing5113522d9c174e7bb445f24ef38c5f5a/135e78c4ae1d430da568b502506b4ab0" format=ESRI_Shapefile output_layer=output [...] Preprocessing input data... Processing input data (7 categories)... 0..3..6..9..12..15..18..21..24..27..30..33..36..39..42..45..48..51..54..57..60..63..66..69..72..75..78..81..84..87..90..93..96..99..100 Updating the database ... ERROR 6: Failed to add field named 's_third_quartile' ERROR 6: Failed to add field named 's_percentile_2' Exporting 13 areas (may take some time)... 7..15..23..30..38..46..53..61..69..76..84..92..100 Assumed solution: fix the parsing of the column names (allow for multiple underscores). [1] Reported without solution here: * https://stackoverflow.com/questions/51244882/v-rast-stats-in-qgis-3-2 * https://github.com/jannes-m/RQGIS/issues/99 * ... -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: http://issues.qgis.org/my/account
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