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Logarithmic Line Chart Display

Here is how the logarithmic line chart works and when to use it.

How it Works:

  • Logarithmic graphs are used in Precision Teaching and fluency-based programs (e.g., SAFMEDs) to visualize rate-based performance over time.
  • The Y-axis uses ratio scaling so proportional growth (e.g., doubling responses per minute) appears evenly spaced and trend slopes reflect acceleration.

💡 Values must be positive, as logarithmic scales cannot display 0.

💡 Exclusively for rate or frequency programs

 

When to Use the Logarithmic Line Chart:

  • You are tracking frequency or rate data over time and want to visualize learning speed, not just current level.
  • You want to compare acquisition rates across programs — slopes on a logarithmic line chart are directly comparable.
  • Behavior counts span a wide range and a linear chart makes low or high counts hard to read. Logarithmic scale keeps both readable on the same chart.
  • You are running Precision Teaching programs and analyzing learning rates rather than just performance levels.
  • A trend looks flat on a regular line chart but you suspect there is meaningful proportional growth happening.

 

How to Enable the Logarithmic Line Chart Display:

💡 Once your program is set up and you have taken data, you will be able to view it in a logarithmic chart display by following the steps outlined below.

  1. Navigate to the program graph and select the 3 horizontal lines to the top right of the graph to view your settings toolbar.

  2. Use the filter options of the settings toolbar to make the following adjustments (top-down):
      1. Period; select from an option, or create a [Custom period]
      2. Data Source; select [Session Data]
      3. X-axis; select [Session] for a detailed view of session data
      4. Data; select from one of the following [Count], [Rate per Minute], [Rate per Hour]. Or [Rate per Day]

        💡This is your Y-axis
      5. Select the logarithmic chart display from the icons on the toolbar.

 

Example data visualizations below for reference:

  • X-axis set to [Count]:

  • X-axis set to [Rate per Minute]: