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36 lines
1.1 KiB
36 lines
1.1 KiB
#' @rdname ggalt-ggproto
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#' @format NULL
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#' @usage NULL
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#' @export
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GeomXSpline2 <- ggproto("GeomXSpline", Geom,
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required_aes = c("x", "y"),
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default_aes = aes(colour = "black", s_shape=1, s_open=FALSE),
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draw_key = draw_key_point,
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draw_panel = function(data, panel_scales, coord) {
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coords <- coord$transform(data, panel_scales)
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grid::xsplineGrob(
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coords$x, coords$y,
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shape = coords$s_shape-1, ## kluge!
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open = coords$s_open[1],
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gp = grid::gpar(col = coords$colour)
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)
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}
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)
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#' Alternative implemenation for connecting control points/observations
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#' with an X-spline
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#'
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#' @inheritParams geom_xspline
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#' @return creates a spline curve
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#' @author Ben Bolker
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#' @family xspline implementations
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geom_xspline2 <- function(mapping = NULL, data = NULL, stat = "identity",
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position = "identity", na.rm = FALSE, show.legend = NA,
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inherit.aes = TRUE, ...) {
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layer(
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geom = GeomXSpline2, mapping = mapping, data = data, stat = stat,
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position = position, show.legend = show.legend, inherit.aes = inherit.aes,
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params = list(na.rm = na.rm, ...)
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)
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}
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