# Map - Standard

![](/files/-M7tivnm2qXqjJFstZKC)

## Column Assignments

* Map - Select a map you want to use. Following maps are available.
  * World Countiries
  * US States
  * US Counties
  * Japan Prefectures
* Type - Select the map type. Either Circle or Area.
* Region such as "Country", "State", "Prefecture", "County" etc - Select a column that has the regional information. It requires different region information depending on the selected map type.
  * World Countries
    * Country: Country names or country codes (iso2c or iso3c codes)
  * US States
    * State: United States State names or 2-letter state codes.
  * US Counties
    * State: United States State names or 2-letter state codes.
    * County: United States County names. It can be with or without "county" like "Orange" or "Orange County"
  * Japan Prefectures
    * Prefecture: Japan Prefecture names in English (such as "Aichi" or "Aichi-ken"), Japanese Kanji (such as "愛知" or "愛知県") or Japanese Hiragana (such as "あいち").
* Color By - Assign a column for color. If you assign a categorical column, it will be also used as a groupby column. Take a look at [Color](/visualization/features/color.md) section for more details.
* Size - Assign a column for the circle size. It is only available for "Circle" map type.
* Label - Assign a column you want to show in the balloon help that you see when you hover circles on the map. If you click "Set as Title" checkbox, the values of the 1st label column will show up at the top as title in the balloon when you hover a region or circle.

## Type

You can choose either "Circle" or "Area" type.

### Circle

You can visualize the data by circles.

![](/files/-M7tivnw2cCP4uL6dmXV)

### Area Type

You can visualize the data by the shape of regisons.

![](/files/-M7tivo1-cPNcMyr9Evf)

## Highlight

You can change the color of the specific reigons that you pick to stand out from others. It is available only when you assgin a categorical column to color. 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.

## Custom Function

You can use the Custom Function feature to define your own aggregation function. See [Custom Function](https://github.com/exploratory-io/book/blob/master/viz/custom-function.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.

## 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.


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