pie(data[, arguments…]) Generates a pie for the given array of data, returning an array of objects representing each datum’s arc angles. Any additional arguments are arbitrary; they are simply propagated to the pie generator’s accessor functions along with the this object. The length of the returned array is the same as data, and each element i in the returned array corresponds to the element i in the input data. Each object in the returned array has the following properties: data - the inp

path.toString() Returns the string representation of this path according to SVG’s path data specficiation.

path.quadraticCurveTo(cpx, cpy, x, y) Draws a quadratic Bézier segment from the current point to the specified point ⟨x, y⟩, with the specified control point ⟨cpx, cpy⟩. Equivalent to context.quadraticCurveTo and SVG’s quadratic Bézier curve commands.

path.moveTo(x, y) Move to the specified point ⟨x, y⟩. Equivalent to context.moveTo and SVG’s “moveto” command.

path.pointRadius([radius]) If radius is specified, sets the radius used to display Point and MultiPoint features to the specified number. If radius is not specified, returns the current radius accessor, which defaults to 4.5. While the radius is commonly specified as a number constant, it may also be specified as a function which is computed per feature, being passed the any arguments passed to the path generator. For example, if your GeoJSON data has additional properties, you might access

path.projection([projection]) If a projection is specified, sets the current projection to the specified projection. If projection is not specified, returns the current projection, which defaults to null. The null projection represents the identity transformation: the input geometry is not projected and is instead rendered directly in raw coordinates. This can be useful for fast rendering of pre-projected geometry, or for fast rendering of the equirectangular projection. The given projection

path.lineTo(x, y) Draws a straight line from the current point to the specified point ⟨x, y⟩. Equivalent to context.lineTo and SVG’s “lineto” command.

path.closePath() Ends the current subpath and causes an automatic straight line to be drawn from the current point to the initial point of the current subpath. Equivalent to context.closePath and SVG’s “closepath” command.

path.bounds(object) Returns the projected planar bounding box (typically in pixels) for the specified GeoJSON object. The bounding box is represented by a two-dimensional array: [[x₀, y₀], [x₁, y₁]], where x₀ is the minimum x-coordinate, y₀ is the minimum y-coordinate, x₁ is maximum x-coordinate, and y₁ is the maximum y-coordinate. This is handy for, say, zooming in to a particular feature. (Note that in projected planar coordinates, the minimum latitude is typically the maximum y-value, and

path.centroid(object) Returns the projected planar centroid (typically in pixels) for the specified GeoJSON object. This is handy for, say, labeling state or county boundaries, or displaying a symbol map. For example, a noncontiguous cartogram might scale each state around its centroid. This method observes any clipping performed by the projection; see projection.clipAngle and projection.clipExtent.