This tool can be used to create a histogram, which is a graph displaying the frequency distribution of data, for the values contained in a field of an input vector's attribute table. The user must specify the name of an input vector (`input`) and the name of one of the fields (`field`) contained in the associated attribute table. The tool output (`output`) is an HTML formatted histogram analysis report. If the specified field is non-numerical, the tool will produce a bar-chart of class frequency, similar to the tabular output of the list_unique_values tool.

## See Also

list_unique_values, raster_histogram

## Function Signature

`def attribute_histogram(self, input: Vector, field_name: str, output_html_file: str) -> None: ...`

## Project Links

WbW Homepage User Manual Support WbW