> ## Documentation Index
> Fetch the complete documentation index at: https://docs.finta.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Chart Types

> Configure Metric, Bar, Line, and Donut charts from your Finta data.

Finta supports four chart types. Each reads from a single Notion database and measures a **Value** field, with type-specific options for grouping and time.

<Note>
  Finta stores expenses as **negative** amounts and income as **positive**
  amounts. Keep this in mind when choosing a value field — and use a
  [filter](/charts/filters) to separate spending from income when you want a
  clean breakdown.
</Note>

## Metric

A single headline number — for example, total spend this month.

| Option                           | Description                                                                                            |
| -------------------------------- | ------------------------------------------------------------------------------------------------------ |
| **Value**                        | The field to measure.                                                                                  |
| **Calculation**                  | Sum, Average, Min, or Max.                                                                             |
| **Date field** & **Granularity** | Optional. Bucket the metric by day, week, month, quarter, or year.                                     |
| **Compare to previous period**   | Show the change versus the prior period, with an up/down indicator.                                    |
| **Show increase as positive**    | Controls whether an increase is styled as good (green) or bad (red) — useful for spending vs. revenue. |

## Bar

Compare a value across categories or over time.

| Option          | Description                                                                             |
| --------------- | --------------------------------------------------------------------------------------- |
| **Value**       | The field to measure.                                                                   |
| **X-Axis**      | The field to plot along the bottom (a category, or a date field for a time series).     |
| **Calculation** | How to aggregate values within each bar.                                                |
| **Group By**    | Optional. Split each bar into a series by a second field.                               |
| **Stacked**     | When grouping, stack the series into a single bar instead of placing them side by side. |

## Line

Track one or more series over time.

| Option          | Description                                             |
| --------------- | ------------------------------------------------------- |
| **Value**       | The field to measure.                                   |
| **X-Axis**      | Usually a date field; also supports categorical axes.   |
| **Calculation** | How to aggregate values at each point.                  |
| **Group By**    | Optional. Plot a separate line per value of this field. |

## Donut

Show how a total breaks down across categories.

| Option            | Description                                                                       |
| ----------------- | --------------------------------------------------------------------------------- |
| **Value**         | The field to measure.                                                             |
| **Group By**      | The field that defines each slice (for example, **Category**).                    |
| **Slice minimum** | Slices smaller than this share of the total are combined into an **Other** slice. |

Donut slices are sized by the absolute magnitude of each category's total, and the center shows the absolute combined total, so a spending breakdown reads naturally even though Finta stores expenses as negative numbers. Filter out income first for the cleanest breakdown.