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4. The Screen Setup of PhotoLine

## 4.33 The Histogram

The histogram shows the color distribution of the active picture. It has some settings, that are available through the context menu or the window menu of the dialog:

- Logarithmic and Linear
These options are controlling the scaling of the y-axis.
- All Layers and Active Layer
The histogram can be calculated based on the whole document and based on the active layer.
- Extended View
The extended view shows some additional statistical information.

The calculation of the histogram may last a while when used on very large images or on documents containing many layers, and therefore, may be annoying. Simply turn it off in that rare cases.

Double-clicking the histogram calls the function Levels (see chapter 7.6.38).