Curve

One-dimensional curves as a function of the same axis.

The x-axis defines a regular 1D grid. As illustrated in this example, the grid is not necessarily equally spaced.

@NX_class = "NXroot"
@default = "scan1"
scan1:NXentry
  @NX_class = "NXentry"
  @default = "data"
  data:NXdata
    @NX_class = "NXdata"
    @auxiliary_signals = ["y2"]
    @axes = ["x"]
    @signal = "y1"
    x:NX_INT64[10]
    y1:NX_FLOAT64[10]
    y2:NX_FLOAT64[10]

Explanation:

1. @axes has one value which corresponds to the signal rank of one.

2. y1 is the default signal to be plotted versus x.

3. y2 is the only alternative signal to be plotted versus x.

# Data
import numpy as np

x = [0, 1, 8, 30, 35, 150, 200, 340, 500, 520]
y1 = 4 + np.sin(2 * np.array(x))
y2 = 2 + np.sin(3 * np.array(x))

# Plot
import matplotlib.pyplot as plt  # noqa E402

plt.style.use("_mpl-gallery")

fig, ax = plt.subplots()

ax.plot(x, y1, "o-", label="y1")
ax.plot(x, y2, "go-", label="y2")

plt.show()