> For the complete documentation index, see [llms.txt](https://docs.exploratory.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.exploratory.io/visualization/types/hist.md).

# Histogram

![](/files/-M7ymuOqUnm5or3e2erB)

## Column Assignments

* X-Axis - Assign a column you want to show its distribution. You can assign only a number based column here.
* Y-Axis - It is fixed to "Number of Rows". You can select how you want to show the bars at the function dropdown. See ["Ratio Mode"](#ratio-mode) for detail.
* Color - Take a look at [Color](/visualization/features/color.md) section for more details.
* Number of Bars - Specify the number of bars. The default is `Automatic`.
* Repeat By - You can assign a column to repeat the chart for each of its values. Take a look at [Repeat By](/visualization/features/small-multiple.md) section for more details.

## Count/Ratio Mode

You can select how to show the histogram bars at the function dropdown of Y-Axis control. The following options are available.

* Count - Each bar represents a count of the bucket. This is the default mode.
* Ratio (%) - Show the bars in ratio (%). You need to assign a column to Color.

![](/files/-M7ymuOwshSAn_xHdxzS)

## Cumulative Sum Reference Line

You can show the cumulative sum reference lines.

![](/files/-M7ymuOzc8kZawK27zel)

You can open the setting dialog from "Show Cumulative Sum" menu at Y-Axis.

![](/files/-M7ymuP0JWeWm1PWt8Ml)

Following options are available.

* Type
  * Cumulative Sum - Cumulative sum of bars.
  * Cumulative Sum Ratio (%) - Ratio of the cumulative sum values against the total value. Lines start from 0% and end with 100%.
* Number of Decimal Digits - Number of decimal digits for the cumulative sum lines.
  * Line Width: Thickless of the line.
* Line Style
  * Solid
  * Dotted
  * Dot and Dash

## Highlight

You can change the color of the specific markers such as bars, lines or circles that you pick to stand out from others. See [Highlight](/visualization/features/highlight-1.md) for the detail.

## Category

You can categorize numeric values inside the chart. See [Category(Binning)](/visualization/features/category.md) for the detail.

## Limit Values

You can use Limit Values to filter the categories by the aggregated values. See [Limit Values](/visualization/features/limit.md) for the detail.

## 'Others' Group

If you have many categories, you can reduce the number of categories by changing some category names to 'Others' using the 'Others' Group feature. See ['Others' Group](/visualization/features/others-group.md) for the detail.

## Missing Value Handling

You can use the Missing Value Handling feature to control missing values. See [Missing Value Handling](/visualization/features/missing-value-handling.md) for the detail.

## Show Detail

You can show the detailed data underlying the chart by clicking the chart figure. See [Show Detail](/visualization/features/show-detail.md) for the detail.

## Layout Configuration

Take a look at [Layout Configuration](/visualization/features/layout.md) on how to configure the layout and format.

## Save as an Image

You can save the chart as an image file. See [Save as PNG/SVG](/visualization/features/save.md) for more details.