How bar graphs are scaled

A line or set of lines within a bar graph represents the number of ALERTs with specific priority within the queue. Each bar graph is constructed from bottom to top with the ALERTs of the highest priority appearing on the bottom of the panel.

Related topic

Displaying-ALERT-data-graphically

The bar graphs are automatically scaled using the following rules:

  • All bar graphs on the panel are scaled by the same factor.
  • The factor is calculated as a divisor that allows the tallest bar graph (that is, the largest queue) to fit into the constraints of the physical terminal.
  • However, if the divisor would cause any section (representing the number of ALERTs with a particular priority) to be dropped from the panel, the bar graph is adjusted so that the smallest section will still be displayed, possibly causing the bar graph to extend beyond the screen window and be truncated.

The last rule ensures that, even though a queue may contain a large number of ALERTs with a lesser priority and only a few with a high priority, the section related to the ALERTs with a high priority will still be visually represented.


 

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