(extract module)=

# **extract module**

The extract module is used to extract das data within a given time window from a dataset defined by multiple files.
The dataset is first scanned to build a basic database (a Panda DataFrame), then the dabase is used to select and extract to data of interest

## Build Database
```{eval-rst}
 .. autofunction:: extract.scan_data
```

```{eval-rst}
 .. autofunction:: extract.save_database
```

```{eval-rst}
 .. autofunction:: extract.load_database
```

## select and extract
```{eval-rst}
 .. autofunction:: extract.select
```