How do I interpret "Contour" option used to highlight a group of nodes?

OmicsAnalyst
1

OmicsAnalyst uses kernel density estimation (KDE) from “ks” R package to estimate a probability density function of a random variable. The resulting probability cloud represents the density estimate corresponding to 50% confidence interval, and can help to show separation between sample groups. To perform “Contour” highlighting:

  1. Click on ellipse1 icon located in the vertical tool bar.

  2. On the dialog select Ellipse option under “Visual method” and click “Submit”
    contourdialog

  3. Here is the resulting contour visualization
    contourscatter