Trends

Whenever data is trended in the Discrete & Batch Troubleshooter, it is important to note that there are two types of basic trends available depending on the data being trended:

• Continuous trends
  
  All continuous type variables are displayed using continuous interpolated trends.

• Discrete trends
  
  All discrete type variables (including text fields) are trended using step trends and will not be interpolated.

Every time a variable is trended, all data will be displayed by default. There are no options for trending subsets of data.  Access the menu below for options on configuring and using trends for data visualization:

• Configuring a trend

• Configuring multiple trends

• Zoom features

• Regional Brushing

Configuring a trend

In order to display a trend for a single variable, follow this simple procedure:

1. From the Visualization view, click on the trend icon next to the desired variable in the list of displayed variables.

Configuring multiple trends

In order to trend multiple variables on the same view, follow this procedure:

1. Click the trend icon on the main toolbar to bring up the field selection dialog for trends
   
   - or -
   
   Click the Multiple Trend button available on the Visualization view

2. Add fields to the x or y-axes field selection, by selecting the field(s) to be added and clicking on the corresponding x or y-axes add (>) button.

3. Remove fields from the x or y-axes field selection, by selecting the field(s) to be removed and clicking on the corresponding x or y-axes remove (<) button.

4. (Optional:  Add all fields to the x or y-axes field selection by clicking on the corresponding add all (>>) button. )

5. (Optional:  Remove all fields form the x or y-axes field selection by clicking on the corresponding remove all (<<) button. )

6. Click Ok button when the selection has been made.

7. A new trend view will be shown trending all selected variables on the same view.

Zoom features

Trend options are accessed from the trend toolbar, or by right-clicking anywhere on the trend

1. Scroll axis
   
   Enable/Disable scroll axis mode.  When enabled, clicking and dragging anywhere on a scale will pan the scale.

2. Zoom axis
   
   Enable/Disable zoom axis mode.  When enabled, clicking and dragging anywhere on a scale will zoom the scale.

3. Scroll as one
   
   When multiple fields are trended, enabling this options will scroll all trends as one when using the trend axis to scroll any of the displayed trends.

4. Same Y-Scales
   
   Enabling this option when multiple fields trended will set all Y-scales to the same minimum and maximum value across all trends.  The minimum and maximum values for the trend scales are calculated as the minimum and maximum values across displayed trends.

5. Single Axis
   
   This option will collapse multiple trends to a single Y-axis.  The scale for the single axis is determined as the minimum and maximum value respectively across all displayed trends.

6. Stacked Y-Axis
   
   This option will assign each individual trend its own Y-Axis and stack the t rends vertically.

7. Inner Limits
   
   Check/Uncheck to display/hide inner limits

8. Outer Limits
   
   Check/Uncheck to display/hide outer limits

9. Toggle grid lines
   
   Select to display/hide the grid lines on the trend

10. Zoom in all axis
    
    Click to zoom in.

11. Zoom out all axis
    
    Click to zoom out.

12. Zoom box
    
    Click to enable/disable the zoom box feature.  When enabled zoom box can be dragged on the trend view to zoom in to specific regions on the display.

13. Zoom to fit
    
    Click once to fit the entire data set onto the display

Regional Brushing

Trends also support regional brushing.  

• What is regional brushing?

• Show me how >>

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Related topics:

• Regional Brushing

• Scatter plots

• Histograms