牛虻地块目前是可组合的吗? [英] Are Gadfly plots currently composable?

问题描述

目前有没有办法在 Gadfly.jl 中添加绘图元素?

Is there currently a way to add plot elements together in Gadfly.jl?

例如，在 R 中，如果我有另一个返回 ggplot 的函数并且我想为其添加标题，我会执行以下操作:

For example, in R if I have another function that returns a ggplot and I want to add a title to it, I'd do the following:

p <- makeMyPlot()
p + ggtitle("Now it has a title")

目前有牛虻等价物吗?如果没有，这是否在 Gadfly 的路线图上?

Is there currently a Gadfly equivalent? If not, is this on Gadfly's roadmap?

推荐答案

有add_plot_element()，它可以向现有层添加东西:

There is add_plot_element(), which can add stuff to an existing layer:

xs = [0:0.1:pi]
l = layer(x=xs, y=sin(xs))
add_plot_element(l, Guide.title("Now it has a title"))

然后您可以使用 plot(l) 绘制图层，并调用 draw 或 display 来实际显示某些内容.再往下，还有一堆直接作用于 Plot 的重载:

You can then plot the layer using plot(l), and invoke either draw or display to actually show something. Further down, there's a bunch of overloads that work on a Plot directly:

p = plot(x=xs, y=sin(xs))
add_plot_element(p, Guide.title("Now it has a title"))
display(p)

我在文档中找不到这两个函数，但是幸运的是，来源是可以理解的.Julia 的众多乐趣之一 =)

I can't find either of these functions in the documentation, but fortunately the source is comprehensible enough. One of the many joys of Julia =)

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