# POCViP in summit2

Load the Sirocco Tools module with the following commands:

```bash
module use /ecola/share/modulefiles/
module load sirocco-gnu/latest
```

> **Note**: You can add these commands to your `~/.bashrc` file to have the Sirocco Tools module loaded every time you open summit2.

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# Interface and Vocabulary

![Interface Overview](../../_static/starting_interface.jpg)


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# First Steps and Basic Usages

## Display Variable (Main Window)

Open the file `GLORYS/dataset-ibi-reanalysis-phys-005-002-daily_apr-jun2014.nc`.
Pointing at a variable in the primary menu shows the netCDF information.

- **Primary menu** → [file name] → `theta` to display the potential temperature.
  - If no other variable is already displayed, POCViP displays it automatically.
  - Otherwise, click on **Secondary menu** → `p` → `interp`.

The display of the grid and the field of the variable can be enabled/disabled using the boxes below.

![Menu Overview](../../_static/starting_menu.jpg)


## Moving Through the Data (View Window)

- The button **Zoom to data** defines the best zoom settings for the size of the window.

To zoom on a specific location:
1. Hold **[Right click]**.
2. Slide to draw the box.
3. Release.

To move to another area:
- **Pan box unchecked**: **[Right click]** sets the new view center.
- **Pan box checked**: Holding **[click]** + slide shifts the view.

To change the time (frame):
- Set the frame number in the upper right box 
- Use the keyboard to move to previous [left arrow] or following [right arrow] frame

To change the depth, two options are available in the depth menu:
- **"layer"**: To display the layer of the native grid (z, sigma, etc.).
- **"horizontal"**: To interpolate the variable at a chosen depth.

*For "vertical" option go to [this example](slice.md).*

![Zoom](../../_static/starting_zoom.jpg)

## Saving View, Export the Script

Use the **"Save image as"** button (printer icon) to access the saving window. The chosen extension defines the saving method:

- **".png"**: POCViP saves the image you are viewing. The default setting keeps the width and height of the current view (at the bottom). By setting a "stop frame" greater than the "start frame", POCViP will recursively save the wanted time frames using the same view settings.

- **".pocvip"**: POCViP produces the script to reproduce this view.

For example, save a script named `GLORYS-theta-biscay.pocvip` and close POCViP. To start again from the view, use the command:
```bash
pocvip . GLORYS-theta-biscay.pocvip
```
(*The dot refers to the script execution*).