add_filter_control: Add a filter control to the map
In crazycapivara/mapboxer: An R Interface to 'Mapbox GL JS'

Add a filter control to the map

1 2	add_filter_control(map, layer_id, filter = NULL, pos = NULL, rows = 1, cols = 20)

`map`	A mapboxer object.
`layer_id`	The ID of the layer to which the filter is attached.
`filter`	The initial filter expression.
`pos`	The position of the control. One of `top-left`, `top-right`, `bottom-right` or `bottom-left`.
`rows`	The number of rows of the textarea input.
`cols`	The number of columns of the textarea input.