mantao/Plots.jl
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

add arrow support (#2989)

Browse Source 
* add arrow support

* correctly handle arrow.side = :both
This commit is contained in:
Simon Christ 2020-09-20 20:59:06 +02:00 committed by GitHub
parent 86561b0af0
commit 0536be3bf7
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 50 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
src/backends/pgfplotsx.jl
View File

@ -396,10 +396,53 @@ function pgfx_add_series!(::Val{:path}, axis, series_opt, series, series_func, o
pgfx_filllegend!(series_opt, opt)
end
end
coordinates = PGFPlotsX.Table(pgfx_series_arguments(series, opt, rng)...)
segment_plot =
series_func(merge(series_opt, segment_opt), coordinates)
push!(axis, segment_plot)
# handle arrows
arrow = opt[:arrow]
if arrow isa Arrow
arrow_opt = merge(
segment_opt,
PGFPlotsX.Options("quiver" => PGFPlotsX.Options(
"u" => "\\thisrow{u}",
"v" => "\\thisrow{v}",
pgfx_arrow(arrow, :head) => nothing,
)
)
)
if arrow.side == :head
x_arrow = opt[:x][rng][end-1:end]
y_arrow = opt[:y][rng][end-1:end]
x_path = opt[:x][rng][1:end-1]
y_path = opt[:y][rng][1:end-1]
elseif arrow.side == :tail
x_arrow = opt[:x][rng][2:-1:1]
y_arrow = opt[:y][rng][2:-1:1]
x_path = opt[:x][rng][2:end]
y_path = opt[:y][rng][2:end]
elseif arrow.side == :both
x_arrow = opt[:x][rng][[2,1,end-1,end]]
y_arrow = opt[:y][rng][[2,1,end-1,end]]
x_path = opt[:x][rng][2:end-1]
y_path = opt[:y][rng][2:end-1]
end
coordinates = PGFPlotsX.Table([
:x => x_arrow[1:2:end-1],
:y => y_arrow[1:2:end-1],
:u => [x_arrow[i] - x_arrow[i-1] for i in 2:2:lastindex(x_arrow)],
:v => [y_arrow[i] - y_arrow[i-1] for i in 2:2:lastindex(y_arrow)],
])
arrow_plot =
series_func(merge(series_opt, arrow_opt), coordinates)
push!(axis, arrow_plot)
coordinates = PGFPlotsX.Table(x_path, y_path)
segment_plot =
series_func(merge(series_opt, segment_opt), coordinates)
push!(axis, segment_plot)
else
coordinates = PGFPlotsX.Table(pgfx_series_arguments(series, opt, rng)...)
segment_plot =
series_func(merge(series_opt, segment_opt), coordinates)
push!(axis, segment_plot)
end
# fill between functions
if sf isa Tuple && series[:ribbon] === nothing
sf1, sf2 = sf
@ -716,7 +759,7 @@ end
## --------------------------------------------------------------------------------------
# Generates a colormap for pgfplots based on a ColorGradient
pgfx_arrow(::Nothing) = "every arrow/.append style={-}"
function pgfx_arrow(arr::Arrow)
function pgfx_arrow(arr::Arrow, side = arr.side)
components = String[]
head = String[]
push!(head, "{stealth[length = $(arr.headlength)pt, width = $(arr.headwidth)pt")
@ -725,11 +768,11 @@ function pgfx_arrow(arr::Arrow)
end
push!(head, "]}")
head = join(head, "")
if arr.side == :both || arr.side == :tail
if side == :both || side == :tail
push!(components, head)
end
push!(components, "-")
if arr.side == :both || arr.side == :head
if side == :both || side == :head
push!(components, head)
end
components = join(components, "")