As was seen in Figures
2.10(a), the layers in an image need not all be
the same size. Furthermore, changing a layer's dimensions can be
quite useful. In the parlance of the GIMP, a layer can be resized, which means that its boundaries are shrunk or enlarged
without changing the dimensions of the image's contents.
Alternatively, a layer can be scaled, which means that the
dimensions of the layer are changed and the image contents are
stretched or squeezed to exactly fit within the new layer boundaries.
Six functions in the GIMP resize or scale layers and images:
- Layer Boundary Size, found in the Layers menu
- Scale Layer, found in the Layers menu
- Canvas Size, found in the Image:Image menu
- Scale Image, found in the Image:Image menu
- The Crop tool from the Toolbox
- The Transform tool from the Toolbox
Each of these are discussed and compared in the following sections.