如何在R的传单中更改图例文本颜色？

Question

I created a leaflet map in R Shiny. The problem is that the legend text color is very bright. I need to change the text color but don't find any option in leaflet legend for changing the legend text color.

Answer 1

Nina!

As you can see from ?addLegend() , there are several parameters that may suit you:

pal: the color palette function, generated from colorNumeric(), colorBin(), colorQuantile(), or colorFactor()

colors: a vector of (HTML) colors to be used in the legend if pal is not provided

opacity: the opacity of colors

For example (from here: https://rstudio.github.io/leaflet/legends.html ):

qpal <- colorQuantile("RdYlBu", your_dataset$your_variable, n = 5)

addLegend(pal = qpal, values = ~your_variable, opacity = 1)

Best!