Coordinates
Use Coordinates to construct the pgfplots construct coordinates. Various constructors are available.
Basic usage
For basic usage, consider AbstractVectors and iterables. Notice how non-finite values are skipped. You can also use () or nothing for jumps in functions.
x = linspace(-1, 1, 51) # so that it contains 1/0
@pgf Axis(
{
xmajorgrids,
ymajorgrids,
},
Plot(
{
no_marks,
},
Coordinates(x, 1 ./ x)
)
)
Error bars
Use xerror, xerrorplus, xerrorminus, yerror etc. for error bars.
x = linspace(0, 2π, 20)
@pgf Plot(
{
"no marks",
"error bars/y dir=both",
"error bars/y explicit",
},
Coordinates(x, sin.(x); yerror = 0.2*cos.(x))
)
3D
Use three vectors to construct 3D coordinates.
t = linspace(0, 6*π, 100)
@pgf Plot3(
{
no_marks,
},
Coordinates(t .* sin.(t), t .* cos.(t), .-t)
)
Edge vectors
A convenience constructor is available for plotting a matrix of values calculated from edge vectors.
x = linspace(-2, 2, 20)
y = linspace(-0.5, 3, 25)
f(x, y) = (1 - x)^2 + 100*(y - x^2)^2
@pgf Plot3(
{
surf,
},
Coordinates(x, y, f.(x, y'))
)
Heatmap
x = linspace(-2, 2, 40)
y = linspace(-0.5, 3, 50)
@pgf Axis(
{
view = (0, 90),
colorbar,
"colormap/jet",
},
Plot3(
{
surf,
shader = "flat",
},
Coordinates(x, y, @. √(f(x, y')))
)
)
Matrix plot
x = repeat(0:2, outer = 3)
y = repeat(0:2, inner = 3)
meta = ["color=$c" for c in ["red", "blue", "yellow", "black", "brown", "magenta", "green", "red", "white"]]
c = Coordinates(x, y; meta = meta)
@pgf Axis(
{
enlargelimits = false,
xtick = [0, 1, 2]
},
PlotInc(
{
matrix_plot,
mark = "*",
nodes_near_coords = raw"\coordindex",
"mesh/color input" = "explicit",
"mesh/cols" = 3
},
c,
)
)