Raster tab controls raster layer display properties.

Use grayscale – redraws layer in 256 shades of grey.

Opacity – controls layer transparency.

Brightness – this slider can change raster brightness in plus or in minus.

Contrast – this slider can change raster contrast in plus or in minus.

Saturation – this slider can change colour saturation in plus or in minus.

Select Raster Data Type – opens a new window that lets you utilize additional information contained in your raster image.

There are 3 predefined types of raster images (Height, Aspect and Slope). In addition you can configure aspect vectors styling as well as their size and spacing.

Gradient – specific raster layers that have values stored in pixels (like height layers or density maps) have to be styled using gradients. Click Edit.. to open Gradient Editor.

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