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r"""
.. _constant-temporal-model:
Constant temporal model
=======================
This model parametrises a constant time model.
.. math:: F(t) = 1
"""
# %%
# Example plot
# ------------
# Here is an example plot of the model:
from astropy import units as u
from astropy.time import Time
import matplotlib.pyplot as plt
from gammapy.modeling.models import (
ConstantTemporalModel,
Models,
PowerLawSpectralModel,
SkyModel,
)
time_range = [Time.now(), Time.now() + 1 * u.d]
constant_model = ConstantTemporalModel()
constant_model.plot(time_range)
plt.grid(which="both")
# %%
# YAML representation
# -------------------
# Here is an example YAML file using the model:
model = SkyModel(
spectral_model=PowerLawSpectralModel(),
temporal_model=constant_model,
name="constant-model",
)
models = Models([model])
print(models.to_yaml())
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