omsvg: Build and Transform 'SVG' Objects

Description Usage Arguments Value Examples

The svg_filter() let's us create a named <filter> element that we can apply to any SVG elements (such as shapes). We can bundle one or more filter elements by supplying a list of filter_*() calls to the filters argument.

1	svg_filter(svg, id, width = NULL, height = NULL, filters = list())

`svg`	The `svg` object that is created using the `SVG()` function.
`id`	The ID value to assign to the filter. This must be provided and it should be unique among all `<filter>` elements.
`width, height`	The lengths of `width` and `height` define the extent of the filter.
`filters`	A list of `filter_*()` function calls. Examples include `filter_image()` and `filter_gaussian_blur()`.

An svg object.

if (interactive()) {

# Set up an `svg_filter()` (called
# `"blur"`) that has the blur effect
# (using the `filter_gaussian_blur()`
# function); have the ellipse element
# use the filter by referencing it
# by name via the `"filter"` attribute
SVG(width = 200, height = 100) %>%
  svg_filter(
    id = "blur",
    filters = list(
      filter_gaussian_blur(stdev = 2)
    )
  ) %>%
  svg_ellipse(
    x = 40, y = 40,
    width = 50, height = 30,
    attrs = svg_attrs_pres(
      fill = "green",
      filter = "blur"
    )
  )
}