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# Table of Contents
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[**6. Calculation of Tracer Displacement Velocity**](#calculation-of-tracer-displacement-velocity)
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[**6. Tracers velocity computation**](#tracers-velocity-computation)
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- [Principles](#book-principles)
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- [Manual Velocity Calculation](#point_right-manual-velocity-calculation)
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- [Displacement Calculation Parameters](#gear-displacement-calculation-parameters)
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- [Calculation Grid](#round_pushpin-calculation-grid)
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- [Tracer Displacement Velocity Calculation](#tracer-displacement-velocity-calculation)
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- [Tracer Displacement Computation](#tracer-displacement-computation)
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#
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| ... | ... | @@ -111,7 +111,7 @@ The calculation grid is stored in the **_outputs.dir\\grid.dat_** file, and the |
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- The **_Analyse LSPIV_** 🡪 **_Grid Points 🡪 Import_** menu allows for loading a calculation grid from an existing study using a **_grid.dat_** file. This text file contains a list of the I,J coordinates of all grid nodes in the orthoimage reference system.
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# :stopwatch: Calculation of Tracer Displacement Velocities
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# :stopwatch: Tracer Displacement Computation
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The **_Analyse LSPIV🡪 Calculate Instantaneous Results_** menu starts the statistical analysis of tracer displacements for all image pairs in the sequence. For more details, see the [Principles of velocity measurement](#principes) page.
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