Plotting line segments / multiline object

[noahrhodes]

Is is possible to make a geo plot of line segments equivalent to this example from python's plotly?

https://plotly.com/python/lines-on-maps/#lines-on-maps-from-geopandas

I am not able to find a code example in the documentation. When I try to use geojson data and plot linesegments!(), the multilinestring does not seem to convert properly.

linesegments!(ga, powerlines, color=:white)

ERROR: MethodError: no method matching convert_arguments(::PointBased, ::Vector{AbstractVector})
Closest candidates are:
  convert_arguments(::PointBased, ::AbstractArray, !Matched::AbstractMatrix, !Matched::AbstractArray) at C:\Users\noahx\.julia\packages\Makie\RgxaV\src\conversions.jl:120
  convert_arguments(::PointBased, ::AbstractArray, !Matched::AbstractVector, !Matched::AbstractMatrix) at C:\Users\noahx\.julia\packages\Makie\RgxaV\src\conversions.jl:112
  convert_arguments(!Matched::SurfaceLike, ::AbstractVector{T1}, !Matched::AbstractVector{T2}, !Matched::Function) where {T1, T2} at C:\Users\noahx\.julia\packages\Makie\RgxaV\src\conversions.jl:420
  ...
Stacktrace:

convert_arguments(T::Type{LineSegments{Tuple{GeoJSON.FeatureCollection{2, Float32}}}}, args::Vector{AbstractVector}; kw::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}}) at [conversions.jl](vscode-file://vscode-app/c:/Program%20Files/Microsoft%20VS%20Code/resources/app/out/vs/code/electron-sandbox/workbench/workbench.html)

convert_arguments(T::Type{LineSegments{Tuple{GeoJSON.FeatureCollection{2, Float32}}}}, args::Vector{AbstractVector}) at [conversions.jl](vscode-file://vscode-app/c:/Program%20Files/Microsoft%20VS%20Code/resources/app/out/vs/code/electron-sandbox/workbench/workbench.html)

convert_arguments(P::Type{LineSegments{Tuple{GeoJSON.FeatureCollection{2, Float32}}}}, geom::GeoJSON.FeatureCollection{2, Float32}) at [conversions.jl](vscode-file://vscode-app/c:/Program%20Files/Microsoft%20VS%20Code/resources/app/out/vs/code/electron-sandbox/workbench/workbench.html)

plot!(scene::Scene, P::Type{LineSegments}, attributes::Attributes, args::GeoJSON.FeatureCollection{2, Float32}; kw_attributes::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}}) at [interfaces.jl](vscode-file://vscode-app/c:/Program%20Files/Microsoft%20VS%20Code/resources/app/out/vs/code/electron-sandbox/workbench/workbench.html)

plot! at [interfaces.jl](vscode-file://vscode-app/c:/Program%20Files/Microsoft%20VS%20Code/resources/app/out/vs/code/electron-sandbox/workbench/workbench.html)

plot!(la::Axis, P::Type{LineSegments}, attributes::Attributes, args::GeoJSON.FeatureCollection{2, Float32}; kw_attributes::Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}}) at [axis.jl](vscode-file://vscode-app/c:/Program%20Files/Microsoft%20VS%20Code/resources/app/out/vs/code/electron-sandbox/workbench/workbench.html)

plot! at [axis.jl](vscode-file://vscode-app/c:/Program%20Files/Microsoft%20VS%20Code/resources/app/out/vs/code/electron-sandbox/workbench/workbench.html)

#plot!#1552 at [axis.jl](vscode-file://vscode-app/c:/Program%20Files/Microsoft%20VS%20Code/resources/app/out/vs/code/electron-sandbox/workbench/workbench.html)

linesegments!(::Axis, ::Vararg{Any}; attributes::Base.Pairs{Symbol, Symbol, Tuple{Symbol}, NamedTuple{(:color,), Tuple{Symbol}}}) at [recipes.jl](vscode-file://vscode-app/c:/Program%20Files/Microsoft%20VS%20Code/resources/app/out/vs/code/electron-sandbox/workbench/workbench.html)

top-level scope at [plot_grid.jl](vscode-file://vscode-app/c:/Program%20Files/Microsoft%20VS%20Code/resources/app/out/vs/code/electron-sandbox/workbench/workbench.html)

[asinghvi17]

What's the type of powerlines here? Looks like the contents are too abstract for Makie to be able to dispatch on them - if you could tighten up the type there it would probably help a lot.

Are you going straight from GeoJSON to Makie or do you do some intermediate processing?

[asinghvi17]

As an update, I tried something similar in #207 and it looks like Makie doesn't support vectors of vectors of points....this needs more looking into.

[asinghvi17]

I have added multilinestring support for Makie in the master branch, so this should work now, especially if you pass GeoMakie.to_multilinestring(powerlines) as input to linesegments.

Also, I don't think linesegments will perform correctly - are you sure you don't want lines instead?