## Data recording

### Buffer mode
**TODO**

### Data flushing
Measurements can be performed over many hours or multiple days.
To make sure that unforeseen accidents like Windows Updates do not ruin the entire measurement,
the data can be continuously written to the disk.  
To enable this feature, set `Flush After` to a non-zero value (in the Measurement Settings tab).
After \<Flush After\> number of datapoints are recorded, they are written to the cache directory
as serialized numpy array.
When the measurement is finished, all partial arrays are loaded again and the complete data 
can be saved as `csv` or serialized numpy array (`.pkl`).