Splitting up raster values in QGIS?

Question

Is it possible to split up the individual values of a raster to make each value become a different layer?

I am aiming to create an animated map with TimeManager. However, the data I need for each layer of the animated map is within one raster.

The raster is split into 16 values from 2000-2016. Is there a way to take out each value to create a new layer?

Here is a picture of the raster for more clarity.

Those this raster have several bands or has each pixel a value which corresponds to the year? — LaughU, Commented Jan 17, 2018 at 15:11
@LaughU Does my picture help your question? Sorry quite new to this and not entirely sure what you mean. — amd, Commented Jan 17, 2018 at 15:32

gisnside · Accepted Answer · 2018-01-17 15:57:20Z

For TimeManager, you need a vector, i think :

Solution 1 : vectorisation

If your raster is in integer format :

To answer your title question :

Solution 2 : raster reclassification

Use a Raster Calculator expression ("MyRaster@1 = 1", then "MyRaster@1 = 2",...)to get a reclassified raster for each year (every pixel that answer the logicial condition is equal to 1 and the others are equal to 0 or are null)
Create 16 new raster with that.
put it in display and color it with a 1 = color style

value = 1

Solution 3 : duplicate and style

just duplicate your raster 16 times (right click/duplicate)
on the first layer (set all colors to transparent (0% opacity) except the year color
copy paste style and just change color 2 to full opacity and 1 to 0%.
do the same for all layers

styling

@amd I added another solution if you need vector to animate :) — gisnside, Commented Jan 17, 2018 at 15:58

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