The main purpose of the paper is to prepare and explain the operation of the open source Python library uff_widget intended for use in the Jupyter notebook. The library allows displaying the written data to a UFF file obtained during modal testing and modal analysis. The recorded data is the geometry of the measured structure, the results of modal testing and the results of modal analysis. With this data, the oscillation of the measured structure at different frequencies can be displayed in 3D space (i.e. Harmonic analysis). For the purpose of testing the prepared library, measurements are made on a real structure and modal analysis is performed. The resulting data is stored in a UFF file that serves as a test and demo file for the uff_widget library. To properly prepare and understand the UFF, paper sumerizes documentation of the UFF and the pyuff library.
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