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add warning - enhance example

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t-bltg 2021-07-05 11:48:48 +02:00
parent 81170b4342
commit f5e6ae9f98
2 changed files with 45 additions and 40 deletions
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31
src/backends/gr.jl
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@ -524,7 +524,7 @@ function gr_draw_colorbar(cbar::GRColorbar, sp::Subplot, clims, viewport_plotare
levels = _cbar_unique(contour_levels.(series, Ref(clims)), "levels")
# GR implicitly uses the maximal z value as the highest level
if levels[end] < clims[2]
@warn("GR: highest contour level less than maximal z value is not supported.")
@warn "GR: highest contour level less than maximal z value is not supported."
# replace levels, rather than assign to levels[end], to ensure type
# promotion in case levels is an integer array
levels = [levels[1:end-1]; clims[2]]
@ -1832,7 +1832,7 @@ function gr_draw_contour(series, x, y, z, clims)
h = gr_contour_levels(series, clims)
if series[:fillrange] !== nothing
if series[:fillcolor] != series[:linecolor] && !is_lc_black
@warn("GR: filled contour only supported with black contour lines")
@warn "GR: filled contour only supported with black contour lines"
end
GR.contourf(x, y, h, z, series[:contour_labels] == true ? 1 : 0)
else
@ -1863,6 +1863,7 @@ function gr_draw_surface(series, x, y, z, clims)
GR.setfillcolorind(0)
GR.surface(x, y, z, get(e_kwargs, :display_option, GR.OPTION_FILLED_MESH))
elseif st === :mesh3d
@warn "GR: mesh3d is experimental (no face colors)"
conn = series[:connections]
if typeof(conn) <: Tuple{Array, Array, Array}
ci, cj, ck = conn
@ -1872,25 +1873,25 @@ function gr_draw_surface(series, x, y, z, clims)
else
throw(ArgumentError("Argument connections has to be a tuple of three arrays."))
end
xx = zeros(eltype(x), 4length(ci))
yy = zeros(eltype(y), 4length(cj))
zz = zeros(eltype(z), 4length(ck))
X = zeros(eltype(x), 4length(ci))
Y = zeros(eltype(y), 4length(cj))
Z = zeros(eltype(z), 4length(ck))
@inbounds for I ∈ 1:length(ci)
i = ci[I] + 1 # connections are 0-based
j = cj[I] + 1
k = ck[I] + 1
m = 4(I - 1) + 1; n = m + 1; o = m + 2; p = m + 3
xx[m] = xx[p] = x[i]
yy[m] = yy[p] = y[i]
zz[m] = zz[p] = z[i]
xx[n] = x[j]
yy[n] = y[j]
zz[n] = z[j]
xx[o] = x[k]
yy[o] = y[k]
zz[o] = z[k]
X[m] = X[p] = x[i]
Y[m] = Y[p] = y[i]
Z[m] = Z[p] = z[i]
X[n] = x[j]
Y[n] = y[j]
Z[n] = z[j]
X[o] = x[k]
Y[o] = y[k]
Z[o] = z[k]
end
GR.polyline3d(xx, yy, zz)
GR.polyline3d(X, Y, Z)
else
throw(ArgumentError("Not handled !"))
end

54
src/examples.jl
View File

@ -998,33 +998,37 @@ const _examples = PlotExample[
end]
),
PlotExample( # 47
"Mesh3d",
"""
Allows to plot arbitrary 3d meshes. If only x,y,z are given the mesh is generated automatically.
You can also specify the connections using the connections keyword.
The connections are specified using a tuple of vectors. Each vector contains the 0-based indices of one point of a triangle,
such that elements at the same position of these vectors form a triangle.
""",
[
:(
begin
# specify the vertices
x=[0, 1, 2, 0]
y=[0, 0, 1, 2]
z=[0, 2, 0, 1]
"Mesh3d",
"""
Allows to plot arbitrary 3d meshes. If only x,y,z are given the mesh is generated automatically.
You can also specify the connections using the connections keyword.
The connections are specified using a tuple of vectors. Each vector contains the 0-based indices of one point of a triangle,
such that elements at the same position of these vectors form a triangle.
""",
[
:(
begin
# specify the vertices
x=[0, 1, 2, 0]
y=[0, 0, 1, 2]
z=[0, 2, 0, 1]
# specify the triangles
# every column is one triangle,
# where the values denote the indices of the vertices of the triangle
i=[0, 0, 0, 1]
j=[1, 2, 3, 2]
k=[2, 3, 1, 3]
# specify the triangles
# every column is one triangle,
# where the values denote the indices of the vertices of the triangle
i=[0, 0, 0, 1]
j=[1, 2, 3, 2]
k=[2, 3, 1, 3]
# the four triangles gives above give a tetrahedron
mesh3d(x,y,z;connections=(i,j,k))
end
),
],
# the four triangles gives above give a tetrahedron
mesh3d(
x, y, z; connections=(i, j, k),
title="triangles", xlabel="x", ylabel="y", zlabel="z",
legend=:none, margin=2Plots.mm
)
end
),
],
),
PlotExample( # 48
"Vectors of markershapes and segments",