Makie does not accept Vector{DataTime} types？

Specific Domains Visualization
1

Why doesn’t Makie accept DataTime type, DataTime type is often used.

julia> typeof(e)
Vector{Float64} (alias for Array{Float64, 1})

julia> typeof(time)
Vector{DateTime} (alias for Array{DateTime, 1})

julia> lines(time, e)
ERROR: `Makie.convert_arguments` for the plot type Lines and its conversion trait PointBased() was unsuccessful.

The signature that could not be converted was:
::Vector{DateTime}, ::Vector{Float32}

Makie needs to convert all plot input arguments to types that can be consumed by the backends (typically Arrays with Float32 elements).
You can define a method for `Makie.convert_arguments` (a type recipe) for these types or their supertypes to make this set of arguments convertible (See http://docs.makie.org/stable/documentation/recipes/index.html).    

Alternatively, you can define `Makie.convert_single_argument` for single arguments which have types that are unknown to Makie but which can be converted to known types and fed back to the conversion pipeline.
2

There is an ongoing effort to make these work by default

3 Likes
3

Hope for improvement!
I get it using another way with Makie.

f = Figure(; size=(1000, 600))
ax = Axis(f[1, 1];
    xlabel=L"Time",
    ylabel=L"Electric Field (kV/m)",
    title="$(Date(time[1]))",
    xticks=(1:3599:84480, ["$(lpad(hour(time[i]),2,'0'))" * ":" * "$(lpad(minute(time[i]),2,'0'))" * ":" * "$(lpad(second(time[i]),2,'0'))" for i in 1:3599:84480]),
    xticklabelrotation=pi / 4)
lines!(ax, 1:84480, e)
f
4

Second time I’m making this joke on this forum, but I think this time I’m right:

image

3 Likes