R plotly:当用gglotlot转换ggplot2时保留两个图例的外观 [英] R plotly: preserving appearance of TWO legends when converting ggplot2 with ggplotly
问题描述
我已经注意到,当使用<$ c>将 ggplot2
图转换为交互式绘图
图时$ c> ggplotly function,
但是,当我使用 ggplotly
转换为交互式时,
p < - ggplot(df,aes(x = cat1,y = cat2,size = var1,fill = b
更多的代码行,但您可以完全控制图的所有方面。
library(plotly)
df < - data.frame(cat1 = rep(c(a,b,c),3),
cat2 = c(rep(A,3) ,
rep(B,3),
rep(C,3)),
var1 = 1:9,
var2 = 10:18)
$ b $ size_multi< - 2#乘以您的尺寸以避免像素大小的对象
color_scale< - list(c(0,#000000),list(1,#00BFFF))
p < - plot_ly(df,
type ='scatter',
mode ='markers',
x =〜cat1,
y =〜cat2,
marker = list(color =〜var2,
size =〜var1 * size_multi,
colorscale = color_scale,
colorbar = list(len = 0.8,y = 0.3),
line = list(color =〜var2,
colorscale = color_scale,
width = 2)
),
showlegend = F)
#为打卡标记添加一些虚拟痕迹
markers = c(min(df $ var1),mean(df $ var1),max ($ 1 $ 3){
p< - add_trace(p,
df,
type ='scatter',
mode ='markers',
showlegend = T,
name = markers [[i]],
x ='x',
y ='x',
marker = list(size = markers [[i]] * size_multi,
color ='rgba(255,255,255,0)',
showscale = F,
line = list(color ='rgba (0,0,0,1)',
width = 2))
)
}
#修正坐标系
spacer< - 0.2
p < - layout(p,xaxis = list(range = c(-spacer,length(levels(df $ cat1)) - 1 + spacer)),yaxis = list(range = c(-spacer ,长度(等级(df $ cat1)) - 1 + spacer)))
p
I have come to notice that when converting a ggplot2
plot to an interactive plotly
plot using the ggplotly
function, strange things may occur.
I am plotting a "Punchcard plot", a nice way to present 4 dimensions of a data set:
df <- data.frame(cat1 = rep(c("a","b","c"), 3), cat2 = c(rep("A", 3),
rep("B", 3), rep("C", 3)), var1 = 1:9, var2 = 10:18)
ggplot(df, aes(x=cat1, y=cat2, size= var1, fill = var2)) +
geom_point(shape=21)
However, when I use ggplotly
to convert to interactive, plotly
only presents one of the legends:
p <- ggplot(df, aes(x=cat1, y=cat2, size= var1, fill = var2)) +
geom_point(shape=21)
ggplotly(p)
Why does plotly
do this, how can I avoid this behavior?
Seeing that I encounter more and more of these oddities - anyone has a link to somewhere I can read on how ggplotly
works, in a way I can fix these issues myself in the future?
解决方案 The second legend gets lost in during the conversion (or at least I couldn't find in the data). You can look at the result of ggplotly
and modify everything from the raw data to the layout, e.g. gp[['x']][['layout']]
would contain all the layout variables passed from ggplotly
.
A lot more lines of code but you have full control over all aspects of your graph.
library(plotly)
df <- data.frame(cat1 = rep(c("a","b","c"), 3),
cat2 = c(rep("A", 3),
rep("B", 3),
rep("C", 3)),
var1 = 1:9,
var2 = 10:18)
size_multi <- 2 #multiplies your size to avoid pixel sized objects
color_scale <- list(c(0, "#000000"), list(1, "#00BFFF"))
p <- plot_ly(df,
type='scatter',
mode='markers',
x = ~cat1,
y = ~cat2,
marker = list(color = ~var2,
size=~var1 * size_multi,
colorscale = color_scale,
colorbar = list(len = 0.8, y = 0.3),
line = list(color = ~var2,
colorscale = color_scale,
width = 2)
),
showlegend = F)
#adds some dummy traces for the punch card markers
markers = c(min(df$var1), mean(df$var1), max(df$var1))
for (i in 1:3) {
p <- add_trace(p,
df,
type = 'scatter',
mode = 'markers',
showlegend = T,
name = markers[[i]],
x = 'x',
y = 'x',
marker = list(size = markers[[i]] * size_multi,
color='rgba(255,255,255,0)',
showscale = F,
line = list(color = 'rgba(0,0,0,1)',
width = 2))
)
}
#fix the coordinate system
spacer <- 0.2
p <- layout(p, xaxis=list(range=c(-spacer, length(levels(df$cat1)) - 1 + spacer)), yaxis=list(range=c(-spacer, length(levels(df$cat1)) - 1 + spacer)))
p
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