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# Auto Correlate dialog box

The Auto Correlate dialog box enables you to configure settings used to correlate measurements from the selected graph with measurements in other graphs. To access, right-click on a graph and select > Auto Correlate from the context menu.

- Note: You can also use the green and red vertical drag bars to specify the start and end values for the scenario time range.
- The granularity of the correlated measurements graph may differ from that of the original graph, depending on the scenario time range defined.

In this topic:

## Time Range tab

The Time Range tab of the Auto Correlate dialog box enables you to specify a load test scenario time range for the correlated measurement graph.

User interface elements are described below:

UI Element | Description
--- | ---
Measurement to Correlate | A list of the available measurements that can be correlated.
Display values for complete time range | Click Display to correlate values for the complete scenario time range. This option is available only if you applied a time filter to your graph.
Suggest Time Range by | Analysis automatically demarcates the most significant time period for the measurement in the scenario. Trend. Demarcated an extended time segment which contains the most significant changes. Feature. Demarcates a smaller dimension segment which forms the trend.
Best | Choose the time segment most dissimilar to its adjacent segments.
Previous | Return to the previous suggestion of a time segment.
Next | Suggest the next time segment for auto correlation. Each suggestion is successively less dissimilar.
Automatically suggest for new measurement | Generates new suggestions each time that the Measurement to Correlate item changes.
From | Specify a start value (in hh:mm:ss format) for the scenario time range.
To | Specify an end value (in hh:mm:ss format) for the scenario time range.

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## Correlation Options tab

You use the Correlation Options tab to set the graphs to correlate, the data interval, and the output options.

User interface elements are described below:

UI Element | Description
--- | ---
Select Graphs for Correlation | Select the graphs whose measurements you want to correlate with your selected measurement.
Data Interval | Calculate the interval between correlation measurement polls. Automatic. Uses an automatic value, determined by the time range. Correlate data based on X second intervals. Enter a fixed value.
Output | Choose the level of output displayed. Show the X most closely correlated measurements. Displays only the specified number of measurements most closely related to the selected measurement. The default value is 5. Show measurements with an influence factor of at least X%. Displays only those measurements that converge to the specified percent with the selected measurement. The default value is 50%.

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See also:

- Auto-correlation of measurements

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