ml-agents/docs/Feature-Monitor.md

Using the Monitor

The monitor allows visualizing information related to the agents or training process within a Unity scene.

You can track many different things both related and unrelated to the agents themselves. To use the Monitor, call the Log function anywhere in your code :

Monitor.Log(key, value, displayType , target)

• key is the name of the information you want to display.
• value is the information you want to display.
• displayType is a MonitorType that can be either text, slider, bar or hist.
  • text will convert value into a string and display it. It can be useful for displaying error messages!
  • slider is used to display a single float between -1 and 1. Note that value must be a float if you want to use a slider. If the value is positive, the slider will be green, if the value is negative, the slider will be red.
  • hist is used to display multiple floats. Note that value must be a list or array of floats. The Histogram will be a sequence of vertical sliders.
  • bar is used to see the proportions. Note that value must be a list or array of positive floats. For each float in values, a rectangle of width of value divided by the sum of all values will be show. It is best for visualizing values that sum to 1.
• target is the transform to which you want to attach information. If the transform is null the information will be attached to the global monitor.