Gradient Plot Lines

The plot lines appear on the gradient under the histogram. After you sample a front and/or back color, blue and yellow plot lines appear. The yellow line is for the Source color, and the blue line is for the Back color.

Note: You can change the colors of these plot lines in the Setup controls.

These lines show the pixel value(s) of the sampled color(s) in terms of the distribution of pixels sharing that pixel value.

For example, if you sample a red (for the Source) that is prevalent in the image, the yellow line appears under a high peak on the gradient. If you then sample a blue (for the Back) that is scarce in the image, the blue line appears under a "trough" or "valley" on the gradient.