Note
Click here to download the full example code or to run this example in your browser via Binder
Constant spatial model#
This model is a spatially constant model.
Example plot#
Here is an example plot of the model:
from gammapy.maps import WcsGeom
from gammapy.modeling.models import (
ConstantSpatialModel,
Models,
PowerLawSpectralModel,
SkyModel,
)
geom = WcsGeom.create(npix=(100, 100), binsz=0.1)
model = ConstantSpatialModel(value="42 sr-1")
model.plot(geom=geom, add_cbar=True)
<WCSAxesSubplot: >
YAML representation#
Here is an example YAML file using the model:
pwl = PowerLawSpectralModel()
constant = ConstantSpatialModel()
model = SkyModel(spectral_model=pwl, spatial_model=constant, name="pwl-constant-model")
models = Models([model])
print(models.to_yaml())
components:
- name: pwl-constant-model
type: SkyModel
spectral:
type: PowerLawSpectralModel
parameters:
- name: index
value: 2.0
- name: amplitude
value: 1.0e-12
unit: cm-2 s-1 TeV-1
- name: reference
value: 1.0
unit: TeV
spatial:
type: ConstantSpatialModel
parameters: []