> For the complete documentation index, see [llms.txt](https://developers.felt.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.felt.com/felt-style-language/types-of-visualizations.md).

# Types of visualizations

The `type` field chooses how a layer's data is turned into a picture. Pick the type that matches your data and message:

| Type                                                                                             | Use it for                                                                | Works on                        |
| ------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------- | ------------------------------- |
| [Simple](/felt-style-language/types-of-visualizations/simple-visualizations.md)                  | One uniform style for every feature; raster imagery as-is                 | Points, lines, polygons, raster |
| [Categorical](/felt-style-language/types-of-visualizations/categorical-visualizations.md)        | Color (or icon) by a discrete category                                    | Points, lines, polygons, raster |
| [Numeric](/felt-style-language/types-of-visualizations/numeric-visualizations-color-and-size.md) | Vary color or size by a numeric value (choropleths, proportional symbols) | Points, lines, polygons, raster |
| [Heatmaps](/felt-style-language/types-of-visualizations/heatmaps.md)                             | Point density as a smooth surface                                         | Points                          |
| [H3](/felt-style-language/types-of-visualizations/h3.md)                                         | Aggregate points into hexagonal bins                                      | Points                          |
| [Raster](/felt-style-language/types-of-visualizations/raster.md)                                 | Imagery, single/multiband numeric, categorical, and hillshade             | Raster                          |

Each page lists the geometry types it applies to, the properties that matter, and worked examples. For the values you'll plug into these styles, see [Colors & palettes](/felt-style-language/colors-and-palettes.md), [Icons](/felt-style-language/icons.md), and [Classification methods](/felt-style-language/classification-methods.md).


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