# Waterfall

The waterfall view allows the user to view and analyze several FFTs next to each other in a tridimensional graph. The waterfall view is structured as follows:

1. **Asset tree**: where the user can change between the selected entity.
2. **FFTs List**: where the FFTs to be displayed in the waterfall graph can be selected.
3. **Waterfall**: tridimensional view of the FFTs selected.

<figure><img src="/files/4Ko3oGHGET3cRl9wJ2Ci" alt=""><figcaption><p>Waterfall view structure</p></figcaption></figure>

## User interaction

### Graph functions

The graph functions are options available on top of the graph. These options allow the user to interact with the data displayed as follows:

<figure><img src="/files/OXbpFNB8CXvuT4FBPnZV" alt=""><figcaption></figcaption></figure>

* **Spectrum selection**: select the type of spectrum to visualize (acceleration, velocity, or envelope)
* **Units selection**: change the units used in the graph among the available options. For acceleration and evelope: G, m/s², ft/s²; and for velocity: mm/s and inch/s.
* **Hz/CPM Toggle**: Rescale the horizontal axis to CPM or back to Hz.
* **Export**: download the graph's data in CSV format.
* **Fullscreen**: expands the graph view to fullscreen.

### Data points

The specific value of a point in the graph can be seen by hovering on the graph. By doing so the values of the X, Y, and Z axes will show. Additionally, helping guides for analysis will be available at such points.

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<figure><img src="/files/Tjz1VVX9fCY5lXwIKPnz" alt=""><figcaption><p>Data point example in waterfall graph</p></figcaption></figure>


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