Feature request #10443
Updated by Jürgen Fischer over 6 years ago
*new description:*
see #10443-3
https://issues.qgis.org/issues/10443#note-3
<pre>
Description
The Grid Calculator calculates a new grid based on existing grids and a mathematical formula. The grid variables are single characters which correspond in alphabetical order to the grid list order ('a' = first grid, 'b' = second grid, ...)
Alternatively you can address with letter 'g' followed by position index (g1, g2, g3, ...). Grids from other systems are addressed similarly, just using letter 'h' (h1, h2, h3, ...)
</pre>
*old description:*
I found a problem in Raster calculator, when using the g1, g2, gx format in the Formula. Using a, b, ..., it works.
I attach sample data and log info.
- FORMULA "ifelse(eq(g2,1),1,g1)":
<pre>
SAGA execution commands
io_gdal 0 -TRANSFORM -INTERPOL 0 -GRIDS "/tmp/processing/5b521b3c40614cf0a236986402767fde/probabilidade3.sgrd" -FILES "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_3.tif"
io_gdal 0 -TRANSFORM -INTERPOL 0 -GRIDS "/tmp/processing/8a1b5f9633af4617b183fc5ca54fb64c/somatorio.sgrd" -FILES "/home/pedro/EUQGIS2014/workshop_processing/resultados/somatorio.tif"
grid_calculus "Grid Calculator" -GRIDS "/tmp/processing/5b521b3c40614cf0a236986402767fde/probabilidade3.sgrd" -XGRIDS "/tmp/processing/8a1b5f9633af4617b183fc5ca54fb64c/somatorio.sgrd" -FORMULA "ifelse(eq(g2,1),1,g1)" -RESULT "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif.sgrd"
io_gdal 1 -GRIDS "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif.sgrd" -FORMAT 1 -TYPE 0 -FILE "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif"
SAGA execution console output
_____________________________________________
##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
_____________________________________________
_____________________________________________
library path: /usr/lib/saga/libio_gdal.so
library name: Import/Export - GDAL/OGR
module name : GDAL: Import Raster
author : O.Conrad (c) 2007 (A.Ringeler)
_____________________________________________
Parameters
Grids: No objects
Files: "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_3.tif"
Transformation: yes
Interpolation: Nearest Neighbor
loading: /home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_3.tif
Driver: /home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_3.tif/
Cells: x 351, y 558
Bands: 1
Transformation x' = 72601.347778 + x * 80.012074 + y * 0.000000
Transformation y' = 146231.038994 + x * 0.000000 + y * -80.012074
loading band [1/1]
Inconsistency detected by ld.so: dl-close.c: 762: _dl_close: Assertion `map->l_init_called' failed!
_____________________________________________
##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
_____________________________________________
_____________________________________________
library path: /usr/lib/saga/libio_gdal.so
library name: Import/Export - GDAL/OGR
module name : GDAL: Import Raster
author : O.Conrad (c) 2007 (A.Ringeler)
_____________________________________________
Parameters
Grids: No objects
Files: "/home/pedro/EUQGIS2014/workshop_processing/resultados/somatorio.tif"
Transformation: yes
Interpolation: Nearest Neighbor
loading: /home/pedro/EUQGIS2014/workshop_processing/resultados/somatorio.tif
Driver: /home/pedro/EUQGIS2014/workshop_processing/resultados/somatorio.tif/
Cells: x 351, y 558
Bands: 1
Transformation x' = 72601.347778 + x * 80.012074 + y * 0.000000
Transformation y' = 146231.038994 + x * 0.000000 + y * -80.012074
loading band [1/1]
Inconsistency detected by ld.so: dl-close.c: 762: _dl_close: Assertion `map->l_init_called' failed!
Error: error in formula: ifelse(eq(g2,1),1,a)
Error: executing module [Grid Calculator]
_____________________________________________
##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
_____________________________________________
_____________________________________________
library path: /usr/lib/saga/libgrid_calculus.so
library name: Grid - Calculus
module name : Grid Calculator
author : Copyrights (c) 2003 by Andre Ringeler
_____________________________________________
Load grid: /tmp/processing/5b521b3c40614cf0a236986402767fde/probabilidade3.sgrd...
Load grid: /tmp/processing/8a1b5f9633af4617b183fc5ca54fb64c/somatorio.sgrd...
Parameters
Grid system: 80.012074; 351x 558y; 72641.353815x 101624.307639y
Grids: 1 object (probabilidade3)
Grids from different Systems: 1 object (somatorio)
Result: Result
Formula: ifelse(eq(g2,1),1,g1)
Name: Calculation
Take Formula: no
Use NoData: no
Data Type: 4 byte floating point number
Inconsistency detected by ld.so: dl-close.c: 762: _dl_close: Assertion `map->l_init_called' failed!
Error: Grid file could not be opened.
Error: executing module [GDAL: Export Raster]
_____________________________________________
##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
_____________________________________________
_____________________________________________
library path: /usr/lib/saga/libio_gdal.so
library name: Import/Export - GDAL/OGR
module name : GDAL: Export Raster
author : O.Conrad (c) 2007
_____________________________________________
Load grid: /home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif.sgrd...
failed
GDAL: Export Raster: could not initialize data objects
Inconsistency detected by ld.so: dl-close.c: 762: _dl_close: Assertion `map->l_init_called' failed!
</pre>
- FORMULA "ifelse(eq(b,1),1,a)"
<pre>
SAGA execution commands
grid_calculus "Grid Calculator" -GRIDS "/tmp/processing/5b521b3c40614cf0a236986402767fde/probabilidade3.sgrd" -XGRIDS "/tmp/processing/8a1b5f9633af4617b183fc5ca54fb64c/somatorio.sgrd" -FORMULA "ifelse(eq(b,1),1,a)" -RESULT "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif.sgrd"
io_gdal 1 -GRIDS "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif.sgrd" -FORMAT 1 -TYPE 0 -FILE "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif"
SAGA execution console output
_____________________________________________
##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
_____________________________________________
_____________________________________________
library path: /usr/lib/saga/libgrid_calculus.so
library name: Grid - Calculus
module name : Grid Calculator
author : Copyrights (c) 2003 by Andre Ringeler
_____________________________________________
Load grid: /tmp/processing/5b521b3c40614cf0a236986402767fde/probabilidade3.sgrd...
Load grid: /tmp/processing/8a1b5f9633af4617b183fc5ca54fb64c/somatorio.sgrd...
Parameters
Grid system: 80.012074; 351x 558y; 72641.353815x 101624.307639y
Grids: 1 object (probabilidade3)
Grids from different Systems: 1 object (somatorio)
Result: Result
Formula: ifelse(eq(b,1),1,a)
Name: Calculation
Take Formula: no
Use NoData: no
Data Type: 4 byte floating point number
Inconsistency detected by ld.so: dl-close.c: 762: _dl_close: Assertion `map->l_init_called' failed!
_____________________________________________
##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
_____________________________________________
_____________________________________________
library path: /usr/lib/saga/libio_gdal.so
library name: Import/Export - GDAL/OGR
module name : GDAL: Export Raster
author : O.Conrad (c) 2007
_____________________________________________
Load grid: /home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif.sgrd...
Parameters
Grid system: 80.012074; 351x 558y; 72641.353815x 101624.307639y
Grid(s): 1 object (probabilidade_4_teste.tif)
File: /home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif
Format: GeoTIFF
Data Type: match input data
Set Custom NoData: no
NoData Value: 0.000000
Creation Options:
Band 1
</pre>
This only happens when you use more than one raster in the formula.
And it is a regression, as it only happens in the master version. With 2.2.0-2 which is in plugins, it works ok.
As it is a regression, I put it as blocker.
see #10443-3
https://issues.qgis.org/issues/10443#note-3
<pre>
Description
The Grid Calculator calculates a new grid based on existing grids and a mathematical formula. The grid variables are single characters which correspond in alphabetical order to the grid list order ('a' = first grid, 'b' = second grid, ...)
Alternatively you can address with letter 'g' followed by position index (g1, g2, g3, ...). Grids from other systems are addressed similarly, just using letter 'h' (h1, h2, h3, ...)
</pre>
*old description:*
I found a problem in Raster calculator, when using the g1, g2, gx format in the Formula. Using a, b, ..., it works.
I attach sample data and log info.
- FORMULA "ifelse(eq(g2,1),1,g1)":
<pre>
SAGA execution commands
io_gdal 0 -TRANSFORM -INTERPOL 0 -GRIDS "/tmp/processing/5b521b3c40614cf0a236986402767fde/probabilidade3.sgrd" -FILES "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_3.tif"
io_gdal 0 -TRANSFORM -INTERPOL 0 -GRIDS "/tmp/processing/8a1b5f9633af4617b183fc5ca54fb64c/somatorio.sgrd" -FILES "/home/pedro/EUQGIS2014/workshop_processing/resultados/somatorio.tif"
grid_calculus "Grid Calculator" -GRIDS "/tmp/processing/5b521b3c40614cf0a236986402767fde/probabilidade3.sgrd" -XGRIDS "/tmp/processing/8a1b5f9633af4617b183fc5ca54fb64c/somatorio.sgrd" -FORMULA "ifelse(eq(g2,1),1,g1)" -RESULT "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif.sgrd"
io_gdal 1 -GRIDS "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif.sgrd" -FORMAT 1 -TYPE 0 -FILE "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif"
SAGA execution console output
_____________________________________________
##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
_____________________________________________
_____________________________________________
library path: /usr/lib/saga/libio_gdal.so
library name: Import/Export - GDAL/OGR
module name : GDAL: Import Raster
author : O.Conrad (c) 2007 (A.Ringeler)
_____________________________________________
Parameters
Grids: No objects
Files: "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_3.tif"
Transformation: yes
Interpolation: Nearest Neighbor
loading: /home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_3.tif
Driver: /home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_3.tif/
Cells: x 351, y 558
Bands: 1
Transformation x' = 72601.347778 + x * 80.012074 + y * 0.000000
Transformation y' = 146231.038994 + x * 0.000000 + y * -80.012074
loading band [1/1]
Inconsistency detected by ld.so: dl-close.c: 762: _dl_close: Assertion `map->l_init_called' failed!
_____________________________________________
##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
_____________________________________________
_____________________________________________
library path: /usr/lib/saga/libio_gdal.so
library name: Import/Export - GDAL/OGR
module name : GDAL: Import Raster
author : O.Conrad (c) 2007 (A.Ringeler)
_____________________________________________
Parameters
Grids: No objects
Files: "/home/pedro/EUQGIS2014/workshop_processing/resultados/somatorio.tif"
Transformation: yes
Interpolation: Nearest Neighbor
loading: /home/pedro/EUQGIS2014/workshop_processing/resultados/somatorio.tif
Driver: /home/pedro/EUQGIS2014/workshop_processing/resultados/somatorio.tif/
Cells: x 351, y 558
Bands: 1
Transformation x' = 72601.347778 + x * 80.012074 + y * 0.000000
Transformation y' = 146231.038994 + x * 0.000000 + y * -80.012074
loading band [1/1]
Inconsistency detected by ld.so: dl-close.c: 762: _dl_close: Assertion `map->l_init_called' failed!
Error: error in formula: ifelse(eq(g2,1),1,a)
Error: executing module [Grid Calculator]
_____________________________________________
##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
_____________________________________________
_____________________________________________
library path: /usr/lib/saga/libgrid_calculus.so
library name: Grid - Calculus
module name : Grid Calculator
author : Copyrights (c) 2003 by Andre Ringeler
_____________________________________________
Load grid: /tmp/processing/5b521b3c40614cf0a236986402767fde/probabilidade3.sgrd...
Load grid: /tmp/processing/8a1b5f9633af4617b183fc5ca54fb64c/somatorio.sgrd...
Parameters
Grid system: 80.012074; 351x 558y; 72641.353815x 101624.307639y
Grids: 1 object (probabilidade3)
Grids from different Systems: 1 object (somatorio)
Result: Result
Formula: ifelse(eq(g2,1),1,g1)
Name: Calculation
Take Formula: no
Use NoData: no
Data Type: 4 byte floating point number
Inconsistency detected by ld.so: dl-close.c: 762: _dl_close: Assertion `map->l_init_called' failed!
Error: Grid file could not be opened.
Error: executing module [GDAL: Export Raster]
_____________________________________________
##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
_____________________________________________
_____________________________________________
library path: /usr/lib/saga/libio_gdal.so
library name: Import/Export - GDAL/OGR
module name : GDAL: Export Raster
author : O.Conrad (c) 2007
_____________________________________________
Load grid: /home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif.sgrd...
failed
GDAL: Export Raster: could not initialize data objects
Inconsistency detected by ld.so: dl-close.c: 762: _dl_close: Assertion `map->l_init_called' failed!
</pre>
- FORMULA "ifelse(eq(b,1),1,a)"
<pre>
SAGA execution commands
grid_calculus "Grid Calculator" -GRIDS "/tmp/processing/5b521b3c40614cf0a236986402767fde/probabilidade3.sgrd" -XGRIDS "/tmp/processing/8a1b5f9633af4617b183fc5ca54fb64c/somatorio.sgrd" -FORMULA "ifelse(eq(b,1),1,a)" -RESULT "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif.sgrd"
io_gdal 1 -GRIDS "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif.sgrd" -FORMAT 1 -TYPE 0 -FILE "/home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif"
SAGA execution console output
_____________________________________________
##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
_____________________________________________
_____________________________________________
library path: /usr/lib/saga/libgrid_calculus.so
library name: Grid - Calculus
module name : Grid Calculator
author : Copyrights (c) 2003 by Andre Ringeler
_____________________________________________
Load grid: /tmp/processing/5b521b3c40614cf0a236986402767fde/probabilidade3.sgrd...
Load grid: /tmp/processing/8a1b5f9633af4617b183fc5ca54fb64c/somatorio.sgrd...
Parameters
Grid system: 80.012074; 351x 558y; 72641.353815x 101624.307639y
Grids: 1 object (probabilidade3)
Grids from different Systems: 1 object (somatorio)
Result: Result
Formula: ifelse(eq(b,1),1,a)
Name: Calculation
Take Formula: no
Use NoData: no
Data Type: 4 byte floating point number
Inconsistency detected by ld.so: dl-close.c: 762: _dl_close: Assertion `map->l_init_called' failed!
_____________________________________________
##### ## ##### ##
### ### ## ###
### # ## ## #### # ##
### ##### ## # #####
##### # ## ##### # ##
_____________________________________________
_____________________________________________
library path: /usr/lib/saga/libio_gdal.so
library name: Import/Export - GDAL/OGR
module name : GDAL: Export Raster
author : O.Conrad (c) 2007
_____________________________________________
Load grid: /home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif.sgrd...
Parameters
Grid system: 80.012074; 351x 558y; 72641.353815x 101624.307639y
Grid(s): 1 object (probabilidade_4_teste.tif)
File: /home/pedro/EUQGIS2014/workshop_processing/resultados/probabilidade_4_teste.tif
Format: GeoTIFF
Data Type: match input data
Set Custom NoData: no
NoData Value: 0.000000
Creation Options:
Band 1
</pre>
This only happens when you use more than one raster in the formula.
And it is a regression, as it only happens in the master version. With 2.2.0-2 which is in plugins, it works ok.
As it is a regression, I put it as blocker.