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Is there a way to change the legend size in plotly for R? I have not come across this option. I have looked at the docs on legends, https://plot.ly/r/legend/, but it does not mention this.
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Here we have used width and height as function arguments in the scatter chart method of Plotly Express. We have used these arguments to set the dimension of the chart area. To update the margins of the graph we have used margin dimensions, left, right top, and bottom (l, r, t, b) in dictionary format.
By default, Plotly chart with multiple traces shows legends automatically. If it has only one trace, it is not displayed automatically. To display, set showlegend parameter of Layout object to True.
In this example, we are hiding legend in Plotly with the help of method fig. update(layout_showlegend=False), by passing the showlegend parameter as False.
In order to align titles in visualization using plotly module, we are going to use the update_layout() method. Parameters: title: Accepts string value as the title of the visualization. title_x: This parameter is used to align the title in a horizontal motion and accepts a value from 0 to 1.
Use layout(legend = list(font = list(size(30)))):
plot_ly(data = mtcars, x = as.character(mtcars$cyl),
y = mtcars$mpg, type = "box", color = as.character(mtcars$cyl)) %>%
layout(showlegend = TRUE, legend = list(font = list(size = 30)))
While working with legends, there are two pieces to configure.
Let's say you already have a fig(it can be mostly any plot), to that add below line with parameters as you wish, in separate dictionaries.
fig.update_layout(legend = dict(font = dict(family = "Courier", size = 50, color = "black")),
legend_title = dict(font = dict(family = "Courier", size = 30, color = "blue")))
This way you will have more control over two thing.
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