Revisions to Creating Raster Map including if condition in QGIS

added 110 characters in body

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edited Feb 17, 2022 at 8:22

With the raster calculatorRaster Calculator under QGIS > Raster menu QGIS > Raster menu:

(current@1 = 0 AND 2050@1 = 0) * 0 +
(current@1 = 1 AND 2050@1 = 1) * 1 +
(current@1 = 2 AND 2050@1 = 2) * 2 +
(current@1 = 3 AND 2050@1 = 3) * 3

To take into account gain (here value 4) and loss (here value -1) :

((2050@1 - current@1) = 0) * current@1 +
((2050@1 - current@1) > 0) * 4 +
((2050@1 - current@1) < 0) * -1

With the raster calculator under QGIS > Raster menu :

(current@1 = 0 AND 2050@1 = 0) * 0 +
(current@1 = 1 AND 2050@1 = 1) * 1 +
(current@1 = 2 AND 2050@1 = 2) * 2 +
(current@1 = 3 AND 2050@1 = 3) * 3

To take into account gain (here value 4) and loss (here value -1) :

((2050@1 - current@1) = 0) * current@1 +
((2050@1 - current@1) > 0) * 4 +
((2050@1 - current@1) < 0) * -1

With the Raster Calculator under QGIS > Raster menu:

(current@1 = 0 AND 2050@1 = 0) * 0 +
(current@1 = 1 AND 2050@1 = 1) * 1 +
(current@1 = 2 AND 2050@1 = 2) * 2 +
(current@1 = 3 AND 2050@1 = 3) * 3

To take into account gain (here value 4) and loss (here value -1) :

((2050@1 - current@1) = 0) * current@1 +
((2050@1 - current@1) > 0) * 4 +
((2050@1 - current@1) < 0) * -1

little fix

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edited Feb 17, 2022 at 8:06

With the raster calculator under QGIS > Raster menu :

(current@1 = 0 AND 2050@1 = 0) * 0 +
(current@1 = 1 AND 2050@1 = 1) * 1 +
(current@1 = 2 AND 2050@1 = 2) * 2 +
(current@1 = 3 AND 2050@1 = 3) * 3

To take into account gain (here value 4) and loss (here value -1) :

((2050@1 - current@1) = 0) * current@1 +
((2050@1 - current@1) > 0) * 4 +
((2050@1 - current@1) < 0) * -1 +

With the raster calculator under QGIS > Raster menu :

(current@1 = 0 AND 2050@1 = 0) * 0 +
(current@1 = 1 AND 2050@1 = 1) * 1 +
(current@1 = 2 AND 2050@1 = 2) * 2 +
(current@1 = 3 AND 2050@1 = 3) * 3

To take into account gain (here value 4) and loss (here value -1) :

((2050@1 - current@1) = 0) * current@1 +
((2050@1 - current@1) > 0) * 4 +
((2050@1 - current@1) < 0) * -1 +

With the raster calculator under QGIS > Raster menu :

(current@1 = 0 AND 2050@1 = 0) * 0 +
(current@1 = 1 AND 2050@1 = 1) * 1 +
(current@1 = 2 AND 2050@1 = 2) * 2 +
(current@1 = 3 AND 2050@1 = 3) * 3

To take into account gain (here value 4) and loss (here value -1) :

((2050@1 - current@1) = 0) * current@1 +
((2050@1 - current@1) > 0) * 4 +
((2050@1 - current@1) < 0) * -1

add gain and loss

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edited Feb 16, 2022 at 16:19

With the raster calculator under QGIS > Raster menu :

(current@1 = 0 AND 2050@1 = 0) * 0 +
(current@1 = 1 AND 2050@1 = 1) * 1 +
(current@1 = 2 AND 2050@1 = 2) * 2 +
(current@1 = 3 AND 2050@1 = 3) * 3

To take into account gain (here value 4) and loss (here value -1) :

((2050@1 - current@1) = 0) * current@1 +
((2050@1 - current@1) > 0) * 4 +
((2050@1 - current@1) < 0) * -1 +

With the raster calculator under QGIS > Raster menu :

(current@1 = 0 AND 2050@1 = 0) * 0 +
(current@1 = 1 AND 2050@1 = 1) * 1 +
(current@1 = 2 AND 2050@1 = 2) * 2 +
(current@1 = 3 AND 2050@1 = 3) * 3

With the raster calculator under QGIS > Raster menu :

(current@1 = 0 AND 2050@1 = 0) * 0 +
(current@1 = 1 AND 2050@1 = 1) * 1 +
(current@1 = 2 AND 2050@1 = 2) * 2 +
(current@1 = 3 AND 2050@1 = 3) * 3

To take into account gain (here value 4) and loss (here value -1) :

((2050@1 - current@1) = 0) * current@1 +
((2050@1 - current@1) > 0) * 4 +
((2050@1 - current@1) < 0) * -1 +

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created Feb 16, 2022 at 15:07

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