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Multiplying rasters by integers in processing modeler

1

I need to multiply several rasters by integers as a part of a multiple steps process. For this reason I'm using QGIS' Processing Modeler.

I'm looking for something similar to the Raster calculator, but it doesn't seem to be available from the Processing Modeler.

I've also tried to use the GRASS r.mapcalculator algorithm (with A my input raster layer, and applying the formula A*100 for example), but it always returns the following error message:

Oooops! The following output layers could not be open

Output raster layer: /tmp/processing/ad0f2935615a472eb6b6b6feb44f3e72/outfile.tif

qgis qgis-modeler

share|improve this question

edited Oct 28 '18 at 12:34

underdark♦

69k13178346

asked Jan 22 '18 at 21:34

VincentNVincentN

382

bumped to the homepage by Community♦ 2 mins ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

add a comment | 

1

I need to multiply several rasters by integers as a part of a multiple steps process. For this reason I'm using QGIS' Processing Modeler.

I'm looking for something similar to the Raster calculator, but it doesn't seem to be available from the Processing Modeler.

I've also tried to use the GRASS r.mapcalculator algorithm (with A my input raster layer, and applying the formula A*100 for example), but it always returns the following error message:

Oooops! The following output layers could not be open

Output raster layer: /tmp/processing/ad0f2935615a472eb6b6b6feb44f3e72/outfile.tif

qgis qgis-modeler

share|improve this question

edited Oct 28 '18 at 12:34

underdark♦

69k13178346

asked Jan 22 '18 at 21:34

VincentNVincentN

382

bumped to the homepage by Community♦ 2 mins ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

add a comment | 

I need to multiply several rasters by integers as a part of a multiple steps process. For this reason I'm using QGIS' Processing Modeler.

I'm looking for something similar to the Raster calculator, but it doesn't seem to be available from the Processing Modeler.

I've also tried to use the GRASS r.mapcalculator algorithm (with A my input raster layer, and applying the formula A*100 for example), but it always returns the following error message:

Oooops! The following output layers could not be open

Output raster layer: /tmp/processing/ad0f2935615a472eb6b6b6feb44f3e72/outfile.tif

qgis qgis-modeler

share|improve this question

edited Oct 28 '18 at 12:34

underdark♦

69k13178346

asked Jan 22 '18 at 21:34

VincentNVincentN

382

Oooops! The following output layers could not be open

Output raster layer: /tmp/processing/ad0f2935615a472eb6b6b6feb44f3e72/outfile.tif

share|improve this question

edited Oct 28 '18 at 12:34

underdark♦

69k13178346

asked Jan 22 '18 at 21:34

VincentNVincentN

382

share|improve this question

edited Oct 28 '18 at 12:34

underdark♦

69k13178346

asked Jan 22 '18 at 21:34

VincentNVincentN

382

edited Oct 28 '18 at 12:34

underdark♦

69k13178346

edited Oct 28 '18 at 12:34

underdark♦

69k13178346

asked Jan 22 '18 at 21:34

VincentNVincentN

382

asked Jan 22 '18 at 21:34

VincentNVincentN

382

1 Answer
1

active

oldest

votes

0

You can use Raster Product. In the captured image, Constant grid will create a raster layer with cell values defined in the Value input. Then Raster product will multiply Input Raster and Constant grid raster.

(1) SAGA | Raster tools | Constant grid

(2) SAGA | Raster calculus | Raster product

share|improve this answer

answered Jan 31 '18 at 17:15

KazuhitoKazuhito

16.2k41884

add a comment | 

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0

You can use Raster Product. In the captured image, Constant grid will create a raster layer with cell values defined in the Value input. Then Raster product will multiply Input Raster and Constant grid raster.

(1) SAGA | Raster tools | Constant grid

(2) SAGA | Raster calculus | Raster product

share|improve this answer

answered Jan 31 '18 at 17:15

KazuhitoKazuhito

16.2k41884

add a comment | 

0

You can use Raster Product. In the captured image, Constant grid will create a raster layer with cell values defined in the Value input. Then Raster product will multiply Input Raster and Constant grid raster.

(1) SAGA | Raster tools | Constant grid

(2) SAGA | Raster calculus | Raster product

share|improve this answer

answered Jan 31 '18 at 17:15

KazuhitoKazuhito

16.2k41884

add a comment | 

You can use Raster Product. In the captured image, Constant grid will create a raster layer with cell values defined in the Value input. Then Raster product will multiply Input Raster and Constant grid raster.

(1) SAGA | Raster tools | Constant grid

(2) SAGA | Raster calculus | Raster product

share|improve this answer

answered Jan 31 '18 at 17:15

KazuhitoKazuhito

16.2k41884

share|improve this answer

answered Jan 31 '18 at 17:15

KazuhitoKazuhito

16.2k41884

answered Jan 31 '18 at 17:15

KazuhitoKazuhito

16.2k41884

answered Jan 31 '18 at 17:15

KazuhitoKazuhito

16.2k41884