4

I used Rasterize (vector to raster). The result is shown below.

enter image description here

There is a bright yellow background around the map after I used Rasterize. I want to know how I can remove this. The value 0 can be given a whit colour, but I dont want to do that. So what can I do?

5

You can convert the 0's to NoData using GDAL Translate (Raster -> Conversion -> Translate):

enter image description here

0

I found out that its another way to do this without creating a new layer. Choose transparency in layer properties. Under "No data value" there is a field called "Additional no data value", where zero is inserted. enter image description here

0

For the sake of putting another option on the table, you could clip the areas you don't want by using Raster > Extraction > Clip Raster by Mask Layer (using a temporary scratch layer containing a polygon around the area you want to keep).

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