[GRASS-dev] [GRASS GIS] #3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+-------------------------
Reporter: sbl | Owner: grass-dev@…
     Type: enhancement | Status: new
Priority: normal | Milestone:
Component: Vector | Version: svn-trunk
Keywords: v.rast.stats | CPU: All
Platform: All |
--------------------------+-------------------------
When computing statistics from multiple raster maps (say terrain model,
slope, aspect, ...) for vector geometries, v.rast.stats converts the input
vector map in every module call. That generates significant though
unnecessary overhead.

The simplest solution would be to allow multiple raster input (and
multiple column prefixes).

Related ml-post:
https://lists.osgeo.org/pipermail/grass-dev/2018-January/087004.html

I would work on it during community sprint.

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523&gt;
GRASS GIS <https://grass.osgeo.org>

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: new
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------
Changes (by martinl):

* milestone: => 7.6.0

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523#comment:1&gt;
GRASS GIS <https://grass.osgeo.org>

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: new
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------
Changes (by sbl):

* Attachment "v.rast.stats_multiple_rasters.py" added.

Allow multiple input

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523&gt;
GRASS GIS <https://grass.osgeo.org>

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: new
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------

Comment (by sbl):

Attached a first attempt. Testing, feedback, comments welcome. Update of
manual and test would be a next step...

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523#comment:2&gt;
GRASS GIS <https://grass.osgeo.org>

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: new
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------

Comment (by sbl):

Related addons worth having a look at:
https://grass.osgeo.org/grass74/manuals/addons/v.strds.stats.html
https://grass.osgeo.org/grass74/manuals/addons/v.stats.html
https://grass.osgeo.org/grass74/manuals/addons/v.area.stats.html

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523#comment:3&gt;
GRASS GIS <https://grass.osgeo.org>

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: new
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------

Comment (by sbl):

One thing I would like to get a second opinion on is how to handle the
region adjustment that v.rast.stats currently performs. Originally,
v.rast.stats aligns region temporarily to the input raster map (and does
not alter extent), which of course becomes more tricky with multiple
inputs.

In the attached patch the region is (for the time being) aligned to the
first raster. Options for more proper handling would be to:\\
1) leave the current region untouched, so the user can choose resolution
deliberately (could also become a new flag)
2) group raster maps by pixel alignment and perform conversion from vector
to raster for every raster group (if raster maps differ in these regards)
3) as 2) but set extent from vector map in addition

Suggestions?

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523#comment:4&gt;
GRASS GIS <https://grass.osgeo.org>

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: new
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------

Comment (by neteler):

Did anyone test the patch provided by sbl?

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523#comment:5&gt;
GRASS GIS <https://grass.osgeo.org>

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: new
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------
Changes (by sbl):

* Attachment "v.rast.stats_multiraster.diff" added.

Allow multiple raster input (diff updated to r73190)

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523&gt;
GRASS GIS <https://grass.osgeo.org>

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: new
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------
Changes (by veroandreo):

* Attachment "test_patch_v.rast.stats_multiraster.png" added.

test for patch allowing the use of multiple raster maps as input in
v.rast.stats plus the new color tables :slight_smile:

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523&gt;
GRASS GIS <https://grass.osgeo.org>

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: new
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------

Comment (by veroandreo):

Tested with:

{{{
g.copy vector=zipcodes,my_zipcodes
g.region -p vector=my_zipcodes align=elevation
v.rast.stats map=my_zipcodes raster=elevation,geology,soils
column_prefix=elev,geo,soil method=average
}}}

I get a warning

{{{
WARNING: Not all vector categories converted to raster. Converted 44 of
48.
Processing input data (44 categories)...
  100%
Updating the database ...
Processing input data (44 categories)...
  100%
Updating the database ...
Processing input data (44 categories)...
  100%
Updating the database ...
}}}

and then I only see data for 13 polygons, instead of 44 as the warning
says...

{{{
v.db.select my_zipcodes

cat|OBJECTID|WAKE_ZIPCO|PERIMETER|ZIPCODE_|ZIPCODE_ID|ZIPNAME|ZIPNUM|ZIPCODE|NAME|SHAPE_Leng|SHAPE_Area|elev_average|geo_average|soil_average
1|1|262493461.286|80746.40038|2|27|CREEDMOOR|27522|CREEDMOOR
27522|CREEDMOOR|80777.650719|262372872.587|||
2|2|31634621.1616|31064.35816|7|25|YOUNGSVILLE|27596|YOUNGSVILLE
27596|YOUNGSVILLE|31064.35845|31634622.1247|||
3|3|543964359.138|115252.44443|8|20|RALEIGH|27615|RALEIGH
27615|RALEIGH|115252.443861|543964358.996|||
4|4|58736529.666|36836.75795|10|26|YOUNGSVILLE|27596|YOUNGSVILLE
27596|YOUNGSVILLE|36836.756996|58736530.8791|||
5|7|12788390.3938|32416.21157|15|157|DURHAM|27703|DURHAM
27703|DURHAM|30664.931929|12593277.3902|||
6|8|602469071.217|147112.36983|18|8|RALEIGH|27616|RALEIGH
27616|RALEIGH|147116.461058|602468668.316|||
7|11|402520600.739|128456.89917|23|35|RALEIGH|27612|RALEIGH
27612|RALEIGH|128260.956758|402143653.823|||
8|12|1319493933.22|252236.30916|24|9|WENDELL|27591|WENDELL
27591|WENDELL|252265.618847|1319493242|||
9|13|313832905.094|80405.41507|25|19|RALEIGH|27609|RALEIGH
27609|RALEIGH|80405.413149|313832904.304|||
10|14|632112227.725|154800.00031|28|15|RALEIGH|27604|RALEIGH
27604|RALEIGH|154801.611532|632113047.308|80.9428977864892|270|31412.1938642022
11|15|873704032.742|198415.75507|29|22|KNIGHTDALE|27545|KNIGHTDALE
27545|KNIGHTDALE|207888.12556|854234759.151|||
12|17|86718740.3594|47692.08248|34|1|RALEIGH|27608|RALEIGH
27608|RALEIGH|47692.081615|86718740.3587|98.4611553894709|266.422191905412|33249.6981809914
13|19|1174353723.71|250639.52409|36|23|RALEIGH|27610|RALEIGH
27610|RALEIGH|260100.365867|1193825267.82|86.3101705216014|270|35158.4413575247
14|21|25495827.4688|25606.12087|38|2|RALEIGH|27605|RALEIGH
27605|RALEIGH|25606.118579|25495829.7998|107.106468511325|267.676296671735|35061.007475925
15|23|48955772.0156|33100.96362|41|21|RALEIGH|27601|RALEIGH
27601|RALEIGH|33100.961138|48955771.7285|93.4536230171682|270|41372.1275182546
16|24|672983954.444|137789.66922|42|18|APEX|27502|APEX
27502|APEX|138402.016283|671745658.098|||
17|25|1096882081.34|195776.53228|43|24|GARNER|27529|GARNER
27529|GARNER|195766.214382|1096940045.19|99.5202463771186|270|32040.7337491259
18|26|785094011.315|125961.78982|45|4|NEW HILL|27562|NEW HILL 27562|NEW
HILL|125964.20281|785117168.913|||
19|27|74573603.2444|53026.74139|46|76|CLAYTON|27520|CLAYTON
27520|CLAYTON|53026.741222|74573603.668|||
20|29|14013604.9607|20227.39179|50|146|FUQUAY VARINA|27526|FUQUAY VARINA
27526|FUQUAY VARINA|20236.211152|14013892.9812|||
21|30|10825001.4179|18741.09609|51|5|WILLOW SPRING|27592|WILLOW SPRING
27592|WILLOW SPRING|18774.411343|10826786.022|||
22|32|595065.85534|3225.47552|53|147|ANGIER|27501|ANGIER
27501|ANGIER|3221.281589|594306.673565|||
23|33|880659423.548|230219.75758|44|11|APEX|27539|APEX
27539|APEX|10758.608766|3709374.42305|||
24|36|607850854.951|135414.36225|6|149|RALEIGH|27613|RALEIGH
27613|RALEIGH|135135.145707|610078059.502|||
25|39|118820937.008|55979.83097|9|3|ROLESVILLE|27571|ROLESVILLE
27571|ROLESVILLE|60467.130446|128973370.856|||
26|40|821009204.045|192414.44366|5|12|RALEIGH|27614|RALEIGH
27614|RALEIGH|193326.052701|821170463.631|||
27|45|246107221.69|98230.55446|14|28|RALEIGH|27617|RALEIGH
27617|RALEIGH|96973.596277|242589284.931|||
28|54|1380544316.71|223529.01406|13|14|ZEBULON|27597|ZEBULON
27597|ZEBULON|229111.795818|1389077516.66|||
29|114|595719341.254|135382.61154|40|10|CARY|27518|CARY
27518|CARY|118402.346061|275997437.908|121.758819832926|489.922880820543|30329.1413058828
30|212|352353219.773|137980.26455|35|18|APEX|27523|APEX
27523|APEX|126164.348014|325402958.569|||
31|219|13347044.5484|17858.88115|52|147|ANGIER|27501|ANGIER
27501|ANGIER|20517.250079|16785459.3838|||
32|222|670507534.879|180573.69876|49|5|WILLOW SPRING|27592|WILLOW SPRING
27592|WILLOW SPRING|183229.723255|667072962.625|||
33|231|897980333.539|201783.43174|47|6|HOLLY SPRINGS|27540|HOLLY SPRINGS
27540|HOLLY SPRINGS|232065.063395|914275342.706|||
34|236|880659423.548|230219.75758|44|11|APEX|27539|APEX
27539|APEX|251643.611051|892646046.022|121.77684366211|542.152999645012|33788.8520992674
35|244|595719341.254|135382.61154|40|10|CARY|27511|CARY
27511|CARY|88289.696983|325536306.021|138.362605235083|450.144147549038|26780.3082788465
36|260|490635823.637|134946.66576|27|18|CARY|27519|CARY
27519|CARY|129180.587307|564062896.506|||
37|275|2825789004.85|465259.10126|3|13|WAKE FOREST|27587|WAKE FOREST
27587|WAKE FOREST|477264.995577|2806740621.72|||
38|276|504275401.693|157917.82636|30|18|CARY|27513|CARY
27513|CARY|164487.956602|509387886.317|142.599166816593|463.879361016306|21902.406996587
39|282|679964927.93|203429.0581|22|34|RALEIGH|27607|RALEIGH
27607|RALEIGH|182366.287225|552333204.751|129.716638610443|299.799134494058|23540.2665508821
40|286|1285870010.66|282815.79339|37|66|RALEIGH|27603|RALEIGH
27603|RALEIGH|285693.495599|1408742751.36|97.3470864982172|329.630266177917|30374.4847784233
41|288|526570086.386|173734.20912|19|33|MORRISVILLE|27560|MORRISVILLE
27560|MORRISVILLE|169015.912917|643660203.58|||
42|298|829874917.625|230773.26059|39|2|RALEIGH|27606|RALEIGH
27606|RALEIGH|212707.32257|679989401.948|117.274242541568|250.214032731026|29381.817335321
43|301|1073274000.75|252721.8937|48|7|FUQUAY VARINA|27526|FUQUAY VARINA
27526|FUQUAY VARINA|270514.968365|1061355345.52|||
44|196|44695436.7135|43678.90844|26|150|DURHAM|27713|DURHAM
27713|DURHAM|19049.668725|7833481.75676|||
}}}

which makes sense since all maps queried are much smaller than the region
covered by the vector (See attachment). So, seems to work.

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523#comment:6&gt;
GRASS GIS <https://grass.osgeo.org>

Dear all,

I see that I somehow missed to apply this patch after Vero tested and before 7.6 release branch was tagged and Python 3 changes were committed.

My question now is, would it be OK if I apply the patch as is (since it is well tested) to svnreleasebranch_76 and a modified version (accounting for Python 3) to trunk?

Kind regards,
Stefan

-----Original Message-----
From: GRASS GIS <trac@osgeo.org>
Sent: tirsdag 28. august 2018 17:20
Cc: grass-dev@lists.osgeo.org
Subject: Re: [GRASS GIS] #3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: new
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------

Comment (by veroandreo):

Tested with:

{{{
g.copy vector=zipcodes,my_zipcodes
g.region -p vector=my_zipcodes align=elevation v.rast.stats map=my_zipcodes raster=elevation,geology,soils column_prefix=elev,geo,soil method=average }}}

I get a warning

{{{
WARNING: Not all vector categories converted to raster. Converted 44 of 48.
Processing input data (44 categories)...
  100%
Updating the database ...
Processing input data (44 categories)...
  100%
Updating the database ...
Processing input data (44 categories)...
  100%
Updating the database ...
}}}

and then I only see data for 13 polygons, instead of 44 as the warning says...

{{{
v.db.select my_zipcodes

cat|OBJECTID|WAKE_ZIPCO|PERIMETER|ZIPCODE_|ZIPCODE_ID|ZIPNAME|ZIPNUM|ZIPCODE|NAME|SHAPE_Leng|SHAPE_Area|elev_average|geo_average|soil_average
1|1|262493461.286|80746.40038|2|27|CREEDMOOR|27522|CREEDMOOR
27522|CREEDMOOR|80777.650719|262372872.587|||
2|2|31634621.1616|31064.35816|7|25|YOUNGSVILLE|27596|YOUNGSVILLE
27596|YOUNGSVILLE|31064.35845|31634622.1247|||
3|3|543964359.138|115252.44443|8|20|RALEIGH|27615|RALEIGH
27615|RALEIGH|115252.443861|543964358.996|||
4|4|58736529.666|36836.75795|10|26|YOUNGSVILLE|27596|YOUNGSVILLE
27596|YOUNGSVILLE|36836.756996|58736530.8791|||
5|7|12788390.3938|32416.21157|15|157|DURHAM|27703|DURHAM
27703|DURHAM|30664.931929|12593277.3902|||
6|8|602469071.217|147112.36983|18|8|RALEIGH|27616|RALEIGH
27616|RALEIGH|147116.461058|602468668.316|||
7|11|402520600.739|128456.89917|23|35|RALEIGH|27612|RALEIGH
27612|RALEIGH|128260.956758|402143653.823|||
8|12|1319493933.22|252236.30916|24|9|WENDELL|27591|WENDELL
27591|WENDELL|252265.618847|1319493242|||
9|13|313832905.094|80405.41507|25|19|RALEIGH|27609|RALEIGH
27609|RALEIGH|80405.413149|313832904.304|||
10|14|632112227.725|154800.00031|28|15|RALEIGH|27604|RALEIGH
27604|RALEIGH|154801.611532|632113047.308|80.9428977864892|270|31412.1938642022
11|15|873704032.742|198415.75507|29|22|KNIGHTDALE|27545|KNIGHTDALE
27545|KNIGHTDALE|207888.12556|854234759.151|||
12|17|86718740.3594|47692.08248|34|1|RALEIGH|27608|RALEIGH
27608|RALEIGH|47692.081615|86718740.3587|98.4611553894709|266.422191905412|33249.6981809914
13|19|1174353723.71|250639.52409|36|23|RALEIGH|27610|RALEIGH
27610|RALEIGH|260100.365867|1193825267.82|86.3101705216014|270|35158.4413575247
14|21|25495827.4688|25606.12087|38|2|RALEIGH|27605|RALEIGH
27605|RALEIGH|25606.118579|25495829.7998|107.106468511325|267.676296671735|35061.007475925
15|23|48955772.0156|33100.96362|41|21|RALEIGH|27601|RALEIGH
27601|RALEIGH|33100.961138|48955771.7285|93.4536230171682|270|41372.1275182546
16|24|672983954.444|137789.66922|42|18|APEX|27502|APEX
27502|APEX|138402.016283|671745658.098|||
17|25|1096882081.34|195776.53228|43|24|GARNER|27529|GARNER
27529|GARNER|195766.214382|1096940045.19|99.5202463771186|270|32040.7337491259
18|26|785094011.315|125961.78982|45|4|NEW HILL|27562|NEW HILL 27562|NEW HILL|125964.20281|785117168.913|||
19|27|74573603.2444|53026.74139|46|76|CLAYTON|27520|CLAYTON
27520|CLAYTON|53026.741222|74573603.668|||
20|29|14013604.9607|20227.39179|50|146|FUQUAY VARINA|27526|FUQUAY VARINA 27526|FUQUAY VARINA|20236.211152|14013892.9812|||
21|30|10825001.4179|18741.09609|51|5|WILLOW SPRING|27592|WILLOW SPRING 27592|WILLOW SPRING|18774.411343|10826786.022|||
22|32|595065.85534|3225.47552|53|147|ANGIER|27501|ANGIER
27501|ANGIER|3221.281589|594306.673565|||
23|33|880659423.548|230219.75758|44|11|APEX|27539|APEX
27539|APEX|10758.608766|3709374.42305|||
24|36|607850854.951|135414.36225|6|149|RALEIGH|27613|RALEIGH
27613|RALEIGH|135135.145707|610078059.502|||
25|39|118820937.008|55979.83097|9|3|ROLESVILLE|27571|ROLESVILLE
27571|ROLESVILLE|60467.130446|128973370.856|||
26|40|821009204.045|192414.44366|5|12|RALEIGH|27614|RALEIGH
27614|RALEIGH|193326.052701|821170463.631|||
27|45|246107221.69|98230.55446|14|28|RALEIGH|27617|RALEIGH
27617|RALEIGH|96973.596277|242589284.931|||
28|54|1380544316.71|223529.01406|13|14|ZEBULON|27597|ZEBULON
27597|ZEBULON|229111.795818|1389077516.66|||
29|114|595719341.254|135382.61154|40|10|CARY|27518|CARY
27518|CARY|118402.346061|275997437.908|121.758819832926|489.922880820543|30329.1413058828
30|212|352353219.773|137980.26455|35|18|APEX|27523|APEX
27523|APEX|126164.348014|325402958.569|||
31|219|13347044.5484|17858.88115|52|147|ANGIER|27501|ANGIER
27501|ANGIER|20517.250079|16785459.3838|||
32|222|670507534.879|180573.69876|49|5|WILLOW SPRING|27592|WILLOW SPRING 27592|WILLOW SPRING|183229.723255|667072962.625|||
33|231|897980333.539|201783.43174|47|6|HOLLY SPRINGS|27540|HOLLY SPRINGS 27540|HOLLY SPRINGS|232065.063395|914275342.706|||
34|236|880659423.548|230219.75758|44|11|APEX|27539|APEX
27539|APEX|251643.611051|892646046.022|121.77684366211|542.152999645012|33788.8520992674
35|244|595719341.254|135382.61154|40|10|CARY|27511|CARY
27511|CARY|88289.696983|325536306.021|138.362605235083|450.144147549038|26780.3082788465
36|260|490635823.637|134946.66576|27|18|CARY|27519|CARY
27519|CARY|129180.587307|564062896.506|||
37|275|2825789004.85|465259.10126|3|13|WAKE FOREST|27587|WAKE FOREST 27587|WAKE FOREST|477264.995577|2806740621.72|||
38|276|504275401.693|157917.82636|30|18|CARY|27513|CARY
27513|CARY|164487.956602|509387886.317|142.599166816593|463.879361016306|21902.406996587
39|282|679964927.93|203429.0581|22|34|RALEIGH|27607|RALEIGH
27607|RALEIGH|182366.287225|552333204.751|129.716638610443|299.799134494058|23540.2665508821
40|286|1285870010.66|282815.79339|37|66|RALEIGH|27603|RALEIGH
27603|RALEIGH|285693.495599|1408742751.36|97.3470864982172|329.630266177917|30374.4847784233
41|288|526570086.386|173734.20912|19|33|MORRISVILLE|27560|MORRISVILLE
27560|MORRISVILLE|169015.912917|643660203.58|||
42|298|829874917.625|230773.26059|39|2|RALEIGH|27606|RALEIGH
27606|RALEIGH|212707.32257|679989401.948|117.274242541568|250.214032731026|29381.817335321
43|301|1073274000.75|252721.8937|48|7|FUQUAY VARINA|27526|FUQUAY VARINA 27526|FUQUAY VARINA|270514.968365|1061355345.52|||
44|196|44695436.7135|43678.90844|26|150|DURHAM|27713|DURHAM
27713|DURHAM|19049.668725|7833481.75676|||
}}}

which makes sense since all maps queried are much smaller than the region covered by the vector (See attachment). So, seems to work.

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523#comment:6&gt;
GRASS GIS <https://grass.osgeo.org>

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: new
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------

Comment (by neteler):

Please commit the patch, otherwise it will get lost or outdated. Thanks

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523#comment:7&gt;
GRASS GIS <https://grass.osgeo.org>

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: new
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------

Comment (by sbl):

In [changeset:"73461" 73461]:
{{{
#!CommitTicketReference repository="" revision="73461"
apply multiraster patch see #3523
}}}

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523#comment:8&gt;
GRASS GIS <https://grass.osgeo.org>

#3523: v.rast.stats: avoid multiple rasterization when run on multiple raster maps
--------------------------+--------------------------
  Reporter: sbl | Owner: grass-dev@…
      Type: enhancement | Status: closed
  Priority: normal | Milestone: 7.6.0
Component: Vector | Version: svn-trunk
Resolution: fixed | Keywords: v.rast.stats
       CPU: All | Platform: All
--------------------------+--------------------------
Changes (by sbl):

* status: new => closed
* resolution: => fixed

Comment:

In [changeset:"73462" 73462]:
{{{
#!CommitTicketReference repository="" revision="73462"
apply multiraster patch; fix #3523
}}}

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3523#comment:9&gt;
GRASS GIS <https://grass.osgeo.org>