## 30.2. Interpolation (From File) User Functions

If you have a file which contains data in the profile data format, then it can be imported as described in Profile Boundary Conditions in the CFX-Solver Modeling Guide. The user function which is created by the import process will have the `Interpolation (From File)` option selected. Note that this type of user function cannot be created directly by inserting a new user function.

The data in a profile data file is read directly by the CFX-Solver each time the solver is started or restarted. Modifications to the numerical values in the profile data file can be made without returning to CFX-Pre.

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