Add Line Weight Size Legend

[bpb824]

Do you plan to add an implementation of this for the width/weight of polylines? I haven't seen any other package do it yet, and it seems like it would not be that hard from what you have already set up.

[tomroh]

@bpb824 I can add this in the next version. You are looking for something similar to addLegendSize but only changes the weight of the line height but not the line width?

[bpb824]

Precisely -- something that can be used to represent flow data on a polyline. I use your package to map transit data for example, and I want to be able to show passenger load observed on segments of a bus route using the weight attribute of Leaflet's polyline shape. Thank you!

[tomroh]

devtools::install_github('tomroh/leaflegend@devel')

library(leaflet)
library(leaflegend)
data("atlStorms2005")
baseSize <- 10
lineColor <- '#00000080'
pal <- colorNumeric('Reds', atlStorms2005$MinPress)
leaflet() |> 
  addTiles() |> 
  addPolylines(data = atlStorms2005,
               weight = ~sizeNumeric(values = MaxWind, baseSize = baseSize),
               color = ~pal(MinPress),
               popup = ~as.character(MaxWind)) |> 
  addLegendLine(values = atlStorms2005$MaxWind, 
                title = 'MaxWind',
                baseSize = baseSize,
                width = 50,
                color = lineColor) |> 
  addLegendNumeric(pal = pal, 
                   title = 'MinPress',
                   values = atlStorms2005$MinPress)

I added in a new function and this should solve the issue.

[bpb824]

Thank you!!!

[tomroh]

fda701250eb7cc568f895c43778f6d9790ae2254