Viewing Explanations

The Explain feature in the KS6800A PathWave Measurement Analytics software is another method to help you perform enhanced analysis on the plotted data. In this feature, the KS6800A software applies logical algorithm to provide possible reasons /explanations for the selected measurements. Based on this analysis, one could eliminate or rectify all possible factors that may be affecting the overall quality of the product under test.

The Explain function requires a license for advanced features. See Licensing Requirements for more information.
  1. To find explanation for a part of the plotted data, select the range of data on the chart. See Selecting Data on Charts.
In the example below, let us select the measurement with the highest peak on sepal_length to find out the possible explanations for those values. The range of values selected is displayed in the Selection area of the Measurement Explorer. Note that the associated data is automatically selected in other plotted charts.
  1. On the right pane, click Explain.

On the Explain pane that appears, notice that the same range of values is displayed in the Current Selection area, as was shown in the Selection area of the Measurement Explorer.
  1. Click Analyze Selection.
In the Explanations area, the KS6800A software displays a message regarding the progress of the analysis and the time the analysis was started.

Once the analysis is performed, the most probable explanation for the selected data is displayed in the Explanations area. Note that there could be more than one explanation as well, depending on the selected data range.
In this example, the probable explanation is that "for the value 'setosa' from the 'species' field is associated with 82.35% of the selected data and that the probability of this explanation is that it is 2.47 times better than random analysis."

  1. Click the explanation you wish to see on the chart.
The values that meet the selected explanation are plotted separately, and are marked distinctively in the legend info for each chart.

Note that the way explanations are plotted varies across chart types, as shown below.
  1. Like all other charts, you may hover the cursor over the plotted data to find the values.
  • Histogram & Pareto—The selected values and those covered in the explanation are plotted in the opposite direction to the original values. As shown in the first chart for sepal_length, there are 28 actual values in the range [5.25, 5.725] but 10 values (plotted in green) out of the 28 meet the selected explanation. The second chart can be read similarly.
  • Box and Whisker—The values covered under each category are plotted in parallel and values can be read upwards.
  • Scatter—The values meeting the explanation are shown using the icon. If the explanation icon has a red outline, it indicates the values from the selection that are covered in the explanation.
  • Summary Line—The values meeting the explanation are shown using the icon.

  1. Optionally, you may click one or more elements in the legend info to hide / view them on the chart. The excluded element from the chart appears to be subdued in the legend info area. In the following examples, All values from the legend info area is clicked to hide them on the chart.

  1. To remove the active explanation from the charts, click the associated with the expression in the Explanation area of the Measurement Explorer pane.