Data matrix

The active data matrix is a temporary internal data structure inside Wintrack that you use while processing the statements of a custom variable definition file in order to analyze case documents. The data matrix consists of cells that are arranged in rows and columns. The columns represent the trials of the case currently being analyzed. The cells represent the data points of the trials. Depending on the analysis in course, they may hold values such as x- or y-coordinate values, local speed values, current distance to a given point, etc. You can use the data matrix as a data source for the creation of bullets using the Bullets statement, for the creation of profile variables using the Tabulate statement, for the creation of data surfaces using the Surface statement, or for the creation of data arrays using the Collapse statement. Using the Memory statement you can build collections of up to 100 data matrices for later reuse in other variables. See Managing custom variable definition files to learn more on custom data analysis in Wintrack.