Correlation Table Window

The Correlation Table is used to toggle plotting of the correlations that have been performed. It also shows the results of all the correlations or “ERROR” if there was an error when performing the correlation and “NONE” is some of the input data is missing. The Correlation Table and Plotting Controls are the main way of interacting with the graphs and results.

Back - clicking this button goes back to showing the Correlation Setup Window
Auto plot - When auto plot is selected any selections made in the table are automatically (and immediately) plotted. Pending operations are carried out when a selected channel is plotted too.
Re-plot - clicking this button to refreshes the plotting. It switches to saying Plot when Auto-plot is off and is used to update the plotting to match the new selection.
- the pop-up arrow next to Re-plot opens the graph options pop-up. Note, changing graph options also triggers a re-plot.
Export - Clicking this button will open the file explorer so that a CSV file containing the results for all the channels shown in the table can be exported to the desired location.
- The pop-up arrow next to Export reveals the option to export the results to CSV (this is the same as clicking Export directly) and also the option to save a SimVT settings file.
Operations - clicking this button (or the expander arrow to the right of it) expands the operations that can be applied to correct curves if they need to be scaled, offset, inverted or filtered.
Ratings - clicking this button (or the expander arrow to the right of it) expands the ratings section to give detailed view of the individual correlation ratings for each channel.

Toggling (selecting) plots

Each row of the Correlation table represents one (simulation versus test) correlation. The rows of the table are determined by the channels that were selected in the Correlation Setup window.

Selected channels appear as buttons in the Channel column of the Correlation Table. The Model column lists the simulation model tag(s) which are associated with the corresponding channel in the Channel column. Note that it is possible to have multiple simulations associated with the same channel. If this is the case, the channel button will occupy multiple rows. For example, in the image below the channel buttons each span 2 rows in the table below because 2 simulation models (T2 and T3) were selected for correlating versus the same test data.

Channels with the same object and location strings are grouped together so that all the channels with the same location and object can be plotted by toggling on the corresponding button (which may span many rows) in the Location or Object columns (e.g. object "11" which represents the front left occupant in the vehicle.

Any of the buttons in the Object, Location, Channel and Model columns of the Correlation Table can be clicked to toggle plots on and off. Clicking an un-toggled (grey) button in one these columns will automatically toggle all the buttons to the right of the button that was clicked. If the button in the Model column is toggled then the correlation plot(s) for that simulation model versus the selected test will be plotted for the channel defined for the row. Conversely, clicking a button that is already toggled (blue) in any of these columns automatically untoggles all the buttons to the right of the button that was clicked which will cause the corresponding plots to be 'unplotted'. Note that by default, only the corridor graph is plotted for each correlation, but the graph options can be used to show the cross-correlation plots instead or as well.

Clicking a button in a column and then holding down shift and clicking another button in the same column will change the selection of all the in-between buttons to match the first one clicked.

Clicking one of the ratings under Weighted, Total, Corridor and Cross Correlation columns highlights the plot if it is already plotted.

Error Graphs

If a correlation fails, error graphs will be shown. A common example of when a correlation might fail is when the simulation and reference curves are not aligned in time. This helps you identify any issues with the input data, and with this insight, you can correct any issues. An example is shown below with simulation and reference curves before correction (left), and after correction with correlation applied (right).

The curves can be made to overlap using the operations panel available in the Correlation Table (e.g. by using ADDX, etc to meaningfully shift the simulation curve in time to overlap).

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