[英]Movable lines in Plotly R
I have a scatter plot with numeric values on both the axis. 我有一个散点图,两个轴上都有数值。 I want to add two draggable lines, one horizontal and one vertical.
我想添加两条可拖动线,一条水平线和一条垂直线。 Also, I would like to change the color of points in the top-right quadrant formed by the two lines.
另外,我想更改由两条线形成的右上象限中的点的颜色。 I could not find any way to do this in R.
我在R中找不到任何方法可以做到这一点。
My question is similar to Horizontal/Vertical Line in plotly 我的问题在情节上类似于水平/垂直线
Two things I want to add is 我要添加的两件事是
Ability to drag vertical and horizontal lines
能够拖动垂直和水平线
Return values on which the two lines intersect the x and y axis, so that I can use those values as an input for another UI. 返回两条线与x和y轴相交的值,以便我可以将这些值用作另一个UI的输入。
My code sample 我的代码示例
data <- data.frame(y = sample(0:50, 100, replace = TRUE),
x = round(runif(100),2)
)
plot_ly(data, x = ~x, y = ~y)
(1) You can add draggable lines as follows: (1)您可以如下添加可拖动的行:
plot_ly(data, x = ~x, y = ~y, type = 'scatter') %>%
layout(shapes = list(
#vertical line
list(type = "line", x0 = 0.4, x1 = 0.4,
y0 = 0, y1 = 1, yref = "paper"),
#horizontal line
list(type = "line", x0 = 0, x1 = 1,
y0 = 30, y1 = 30, xref = "paper"))) %>%
# allow to edit plot by dragging lines
config(edits = list(shapePosition = TRUE))
Similar to https://stackoverflow.com/a/54777145/5840900 类似于https://stackoverflow.com/a/54777145/5840900
(2) In an interactive environment, you can extract the values of the last dragged line with: (2)在交互式环境中,可以使用以下命令提取最后拖动的线的值:
# Only within reactive shiny context
newData <- plotly::event_data("plotly_relayout")
Hopefully this is still helpful! 希望这仍然有帮助!
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