> For the complete documentation index, see [llms.txt](https://docs.shimoku.com/dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.shimoku.com/dev/elements/charts/bar-charts/zero-centered-bar.md).
# Zero Centered Bar
The **zero centered bar** chart is used when you want to compare data against a value that can be set as zero, and the data values you have oscillate back and forth this value.
## The Method To Use
The method is `s.plt.zero_centered_bar()`
It must contain the following input variables:
```python
x: str
order: int
data: Union[str, DataFrame, List[Dict]]
```
And accepts the following input variables as optional:
```python
y: Optional[List[str]]
x_axis_name: Optional[str]
y_axis_name: Optional[str]
title: Optional[str]
rows_size: Optional[int]
cols_size: Optional[int]
padding: Optional[List[int]]
show_values: Optional[List[str]]
option_modifications: Optional[Dict]
```
## Examples
### 1. Default Configuration
```python
data = [
{'Name': 'a', 'y': 5},
{'Name': 'b', 'y': -7},
{'Name': 'c', 'y': 3},
{'Name': 'd', 'y': -5},
]
s.plt.zero_centered_bar(
data=data, x='Name', order=0,
)
```
### 2. Customization And Context
It is possible to personalize the **title** of the chart, its **subtitle**, its **size** and add **padding**. One example could be obtained using:
```python
data = [
{'Name': '0h', 'level': 2.6},
{'Name': '3h', 'level': -3},
{'Name': '6h', 'level': 3.2},
{'Name': '9h', 'level': -2.9},
{'Name': '12h', 'level': 3.6},
{'Name': '15h', 'level': -3.4},
]
s.plt.zero_centered_bar(
data=data, x='Name',
order=0, rows_size=2, cols_size=7,
padding='0,0,0,1', title='Tide level (m)',
)
```
## Variants
By setting the parameter `variant` to the following values the appearance of the chart can be changed:
{% tabs %}
{% tab title="Clean" %}
{% endtab %}
{% endtabs %}
{% hint style="info" %}
### Featured Content
[Changing the Menu Path](/dev/building-web-app/menu/changing-the-menu-path.md)\
The `menu_path` can be modified.
[Using the Grid](/dev/building-web-app/grid/using-the-grid.md)
It is possible to use any number of rows.
{% endhint %}
---
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