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title: smooth author: Daniel Jones part: Geometry order: 1010 ...

Plot a smooth function estimated from data. An alias for Geom.line with Stat.smooth.

Aesthetics

  • x: Predictor data.
  • y: Response data.
  • color: (optional) Group categorically by color.

Arguments

  • method: :loess and :lm are supported.
  • smoothing: Method specific parameter controlling the degree of smoothing. For loess, this is the span parameter giving the proportion of data used for each local fit where 0.75 is the default. Smaller values use more data (less local context), larger values use less data (more local context).

Examples

using RDatasets
using Gadfly

Gadfly.set_default_plot_size(16cm, 10cm)

x_data = 0.0:0.1:2.0
y_data = x_data.^2 + rand(length(x_data))
plot(x=x_data, y=y_data, Geom.point, Geom.smooth(method=:loess,smoothing=0.9))
plot(x=x_data, y=y_data, Geom.point, Geom.smooth(method=:loess,smoothing=0.2))