Import Configuration Window

When you click Import ISO-MME or CSV... on the Correlation Setup window in SimVT (or in the Automotive Assessments workflow in T/HIS) you will be prompted to select a file to import. If the selected file is a valid channel data source, the Import Configuration window will appear.

When importing channel data, T/HIS attempts to automatically infer meta data such as the units of each channel and the vehicle drive side. However, it is not always possible to correctly infer this information so the Import Configuration window enables you to configure how the data will be imported by giving you the option to:

specify the associated crash test protocol
correct the assumed drive side (if it was not possible to infer it)
correct the units
correct curve polarity and magnitude (invert and scale curves)
rename curves (e.g. fix ISO-MME channel code inconsistencies)

If you prefer, you can press Save to write the Import Configuration inputs to a CSV file. You can then make all the required edits in a spreadsheet editor before loading the CSV file back into the Import Configuration window using the Load button. Doing so has a number of benefits. Firstly, you can simply load the CSV file again when you next want to import the data. The CSV will also serves as a record of the corrections you have made to the imported data.

Once you have configured all the options which need to be changed (either manually or via loading an Import Configuration CSV file), you can click Apply to apply the configuration to the data being imported.

Direct Import via Import Configuration File

The path to the channel data source is stored in the Import Configuration File (CSV) so if you select an Import Configuration File when you click on Import ISO-MME or CSV... the Import Configuration window will not appear, but instead the channels from the corresponding data source will automatically be loaded with the import configuration settings applied. This route is provided to speed up the process of importing data, but you may wish to select the data source first and then Load the Import Configuration File to check the configuration before it is applied.

Import additional Channels from CSV

The Import additional Channels from CSV... button can be used to import additional channels from a CSV file. The most common use case for this is to import head excursion (a.k.a. head offset) channel data that has been extracted from the physical test video footage using tracking software (e.g. as part of the CNCAP Far Side 2024 protocols).

When you click Import additional Channels from CSV... a new window will appear enabling you to select the source CSV and specify the rows to use header, unit and start of data rows. The first row will be taken as the header row by default, and the first row containing all numeric data will be assumed to be the start of the data. You can optionally change these defaults, as well as specify a row to extract the units. The time unit (s or ms) and the individual channel units can also be manually entered in the corresponding textboxes. Ticking Show all rows reveals the rows above the "Start reading data from row number". This is useful if you need change the row numbers to extract header/unit/data from without having to open up the CSV separately.

You can also optionally choose to rename the channels that you are importing using new name textboxes. If you have the "Is imported data head excursion?" option ticked then the new names will default to HEAD_EXCURSION_X, HEAD_EXCURSION_Y and HEAD_EXCURSION_Z. You select a different order for the columns using the new name drop-downs if they do not match the default X, Y Z order.

If you do not want to import all the channels (e.g. you only have Y and Z head excursion data) then you can click on the name of that channel to disable importing.

The Zero data checkboxes provide a convenient way to ensure that time and channel data starts at 0 by subtracting the the first numeric data value from all other rows in that column. A common use case for this is to convert head excursion data from local coordinates to relative displacements.

The Import button will turn blue when the inputs are valid. Clicking it will add the imported channels to the channel table in the Import Configuration Window. You can apply any additional Y scaling or correct the unit type as with any other channel. Note you should avoid having multiple channels with the same name as they will clash.

When saving an Import Configuration File or SimVT settings file, any additional channel data will also be saved so that it can be reloaded in the future without having to re-import the additional channel.

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