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Interface to Gauss%uf09f %uf09f RCP Consult 2022-2025 Page 44. Interaction between STRUREL and GaussThe major kind of communication with the Gauss Interface is usage of script files with extension %u2019.g%u2019. Two types of scripts are implemented.The first type of script describes a real procedure with a single argument as a vector containing mean values of all stochastic variables and fixed values of all deterministic parameters, as is ordered in Stochastic Model of STRUREL. If the function is run from the GUI for testing and debugging the stochastic variables are set to the mean values. The return value of this function is a partial or complete evaluation of the State Function in Symbolic Expression of STRUREL job.The second type of script may contain any set of commands in notation of Gauss language. Such a script must have a statement defining variable %u2019res%u2019 as a final return value. Usually, this statement is the last one. We recommend using the first type of script, because a description of function will be loaded and parsed by engine once. Then, on runtime, it will be just evaluated numerically. The second kind of script requires loading and parsing of its content by the engine runtime for each call of evaluation. This slows down computation.Additionally, it is possible to send a single statement or an expression with multiple statements direct into the engine for a numerical evaluation or intermediate processing for evaluation of the state function.5. Global Data in the InterfaceBefore processing interface data in form of script files or direct expressions STRUREL presets all required input variables. Three global sets will be defined: two global vectors and additionally, each stochastic variable and deterministic parameter become an assigned global name having exactly the same name as in the Stochastic Model. This allows to work in vector notation and/or direct over global names. The first global vector has a fixed name s_XP_ and contains the mean values for the stochastic X-variables followed by the values of the deterministic Parameters. The second global vector has a fixed name v_XP_ and receives all values of the current evaluation step for the X-variables followed again by the values of the deterministic Parameters.Implementation of global vectors s_XP_ and v_XP_ allows creation of plots of the initial and final (%uf062-point) states of a structure where a comparison can be shown graphically and numerically.