7. The Menus / 7.5 The Layer Menu
7.5.3 Scale Layer

Scaling
has various different working modes:
- Normal
- Normal allows to control the destination width and height. Optionally
the image resolution can be set in dpi.
- Percent
- Resolution
- This mode changes the resolution of an image. It modifies the number of
pixels in an image, but its size in inches stays the same.
- Width
- Width is similar to Normal. The one difference is, that only the
destination width is adjustable. The height will be calculated
accordingly.
- Height
- Using Height only the destination height is entered. The width will be
calculated accordingly.
- Fit
- With Fit you have to define a destination size. PhotoLine will scale the
layer proportionally, so that it will fit into that destination size. This
mode is used most in combination with Batch Convert.
- Formula
- Formula allows to enter formulas as destination size. The following
variables are defined:
- w: current width
- h: current height
- d: current resolution in dpi
- You can use all formulas and expressions listed in "Unit Text Fields"
(chapter 3.3.7). The formula mode is mostly used in combination with
actions (see chapter 4.27).
There are 5 interpolation modes:
- Quick
- No interpolation is made, therefore no new pixel values are created. This
mode is usually not suited for photos, but it is the quickest mode.
- Bilinear
- New pixels are created by linear interpolation.
- Bicubic
- Bicubic usually gives better results compared to bilinear. Large
magnifications may be a bit unsharp.
- Lanczos 3
- Lanczos 3 is similar to bicubic, but it has additionally a light sharpness
effect. Therefore, magnifications often look better.
- Lanczos 8
- The sharpening of Lanczos 8 is stronger than that of Lanczos 3.
- Liquid
- The mode Liquid is only available, if Layer is selected and the active
layer is an image. Liquid will not scale the image equally, but instead it
will try to keep the size of the important parts and to scale only the
unimportant ones. You can create a selection to define the important
parts by yourself. The quality of Liquid scaling heavily depends on the
scene of the photo.
The radio buttons Layer, Page and Document select whether to scale the
active layer, the active page or the whole document.