def get_spectral_regions(self):
"""
Retrieves glue subset objects from the spectrum viewer and converts
them to `~specutils.SpectralRegion` objects.
Returns
-------
spec_regs : dict
Mapping from the names of the subsets to the subsets expressed
as `specutils.SpectralRegion` objects.
"""
regions = self.app.get_subsets_from_viewer("spectrum-viewer", subset_type="spectral")
spec_regs = {}
for name, reg in regions.items():
# Use the region's unit. If N/A, use the reference_data's
unit = reg.meta.get("spectral_axis_unit",
self.get_spectra(
self.app.get_viewer("spectrum-viewer"
).state.reference_data.label,
apply_slider_redshift=False
).spectral_axis.unit
)
spec_reg = SpectralRegion.from_center(reg.center.x * unit,
reg.width * unit)
spec_regs[name] = spec_reg
return spec_regs
def _on_subset_selected(self, event):
# If "None" selected, reset based on bounds of selected data
if self.selected_subset == "None":
cube = self._selected_data.get_object(cls=SpectralCube)
self.spectral_min = cube.spectral_axis[0].value
self.spectral_max = cube.spectral_axis[-1].value
else:
spec_sub = self._spectral_subsets[self.selected_subset]
unit = u.Unit(self.spectral_unit)
spec_reg = SpectralRegion.from_center(spec_sub.center.x * unit,
spec_sub.width * unit)
self.spectral_min = spec_reg.lower.value
self.spectral_max = spec_reg.upper.value
def _on_subset_selected(self, event):
# If "None" selected, reset based on bounds of selected data
if self.selected_subset == "None":
self._window = None
self.spectral_min = self._spectrum1d.spectral_axis[0].value
self.spectral_max = self._spectrum1d.spectral_axis[-1].value
else:
spec_sub = self._spectral_subsets[self.selected_subset]
unit = u.Unit(self.spectral_unit)
spreg = SpectralRegion.from_center(spec_sub.center.x * unit,
spec_sub.width * unit)
self._window = (spreg.lower, spreg.upper)
self.spectral_min = spreg.lower.value
self.spectral_max = spreg.upper.value
def get_spectral_regions(self):
"""
Retrieves glue subset objects from the spectrum viewer and converts
them to `~specutils.SpectralRegion` objects.
Returns
-------
spec_regs : dict
Mapping from the names of the subsets to the subsets expressed
as `specutils.SpectralRegion` objects.
"""
regions = self.app.get_subsets_from_viewer('spectrum-viewer')
spec_regs = {}
for name, reg in regions.items():
unit = reg.meta.get('spectral_axis_unit', u.Unit('Angstrom'))
spec_reg = SpectralRegion.from_center(reg.center.x * unit,
reg.width * unit)
spec_regs[name] = spec_reg
return spec_regs