G Gundam (Dec 14 2024 at 19:16): G Gundam (Dec 14 2024 at 19:16):I have a constructor for a mutable Chart struct that is used like this.
using OnlineTechnicalIndicators
using TechnicalIndicatorCharts
golden_cross_chart = Chart(
"AAPL", Week(1);
indicators = [
SMA{Float64}(;period=50), # Setup indicators
SMA{Float64}(;period=200)
],
visuals = [
Dict(
:label_name => "SMA 50", # Describe how to draw indicators
:line_color => "#E072A4",
:line_width => 2
),
Dict(
:label_name => "SMA 200",
:line_color => "#3D3B8E",
:line_width => 5
)
]
)
There's a 1-to-1 correspondence between the values in indicators and the values in visuals. This is for my unreleased library TechnicalIndicatorCharts.jl.
If I don't care how it looks, and I just want to use the defaults, this is what I currently have to do.
golden_cross_chart = Chart(
"AAPL", Week(1);
indicators = [
SMA{Float64}(;period=50), # Setup indicators
SMA{Float64}(;period=200)
],
visuals = [
Dict(), # Not the prettiest, but tolerable.
Dict()
]
)
That might not be so bad, but what if I added Bollinger Bands which is drawn with 3 lines instead of just one like SMA.
golden_cross_chart = Chart(
"AAPL", Week(1);
indicators = [
SMA{Float64}(;period=50), # Setup indicators
SMA{Float64}(;period=200),
BB{Float64}(;period=20)
],
visuals = [
Dict(), # Not the prettiest
Dict(),
Dict(
:upper => Dict(), # Now it's getting ugly.
:central => Dict(),
:lower => Dict() # All this typing just for defaults?!
)
]
)
I want to be able to declare defaults in the visuals vector with way less typing. How could this be accomplished?
Last updated: Dec 28 2024 at 04:38 UTC