```
usage: donchian [-u N_LENGTH_UPPER] [-l N_LENGTH_LOWER] [--export {csv,json,xlsx}] [-h]
```

Donchian Channels are three lines generated by moving average calculations that comprise an indicator formed by upper and lower bands around a midrange or median band. The upper band marks the highest price of a security over N periods while the lower band marks the lowest price of a security over N periods. The area between the upper and lower bands represents the Donchian Channel.

```
optional arguments:
  -u N_LENGTH_UPPER, --length_upper N_LENGTH_UPPER
                        length (default: 20)
  -l N_LENGTH_LOWER, --length_lower N_LENGTH_LOWER
                        length (default: 20)
  --export {csv,json,xlsx}
                        Export dataframe data to csv,json,xlsx file (default: )
  -h, --help            show this help message (default: False)
```
<img width="1400" alt="Feature Screenshot - dochian" src="https://user-images.githubusercontent.com/85772166/144015470-39b7865f-e341-4ac7-9c92-6a97a04c0394.png">