Fix master docs build

docs/development/howto.rst

@@ -762,7 +762,7 @@ that is defined in `gammapy.utils.mpl_style`.  The style is derived from the
 astropy plotting style applying a few minor changes. Here are two examples:
 
 * :ref:`Crab MWL SED plot <crab-mwl-sed>`
-* :ref:`Fermi 1FHL image <fermi-1fhl-image>`
+* :ref:`Fermi 3FHL image <fermi-3fhl-image>`
 
 For the Gammapy docs the style is used by default and doesn't have to be set
 explicitly. If you would like to use the style outside the Gammapy docs, add

docs/tutorials/catalog/index.rst

@@ -3,20 +3,19 @@
 Catalog & Simulation Images
 ===========================
 
-The `~gammapy.image.catalog_image` method allows the production of
-single energy-band 2D images from point source catalogs, either true catalogs
-(e.g. 1FHL or 2FGL) or source catalogs of simulated galaxies (produced with
+The `~gammapy.image.CatalogImageEstimator` class allows the production of
+single energy-band 2D images from source catalogs, either true catalogs
+(e.g. such as 3FHL) or source catalogs of simulated galaxies (produced with
 `~gammapy.astro.population`). Examples of these two use-cases are included below.
 
 Source Catalog Images
 ---------------------
 
 The example script below produces a point source catalog image from the published 
-1FHL Fermi Source Catalog from 10 to 500 GeV. Fluxes are filled into each pixel
-corresponding to source Galactic Latitude and Longitude, and then convolved with
-the Fermi PSF in this energy band.
+3FHL Fermi Source Catalog from 10 to 500 GeV. Fluxes are filled into each pixel
+corresponding to source Galactic Latitude and Longitude. 
 
-.. _fermi-1fhl-image:
+.. _fermi-3fhl-image:
 
 .. plot:: tutorials/catalog/source_image_demo.py
 	:include-source:
@@ -27,13 +26,5 @@ Simulated Catalog Images
 In this case, a galaxy is simulated with `~gammapy.astro.population` to produce a
 source catalog. This is then converted into an image.
 
-.. plot:: tutorials/catalog/simulated_image_demo.py
-	:include-source:
-
-Caveats & Future Developments
------------------------------
-
-It should be noted that the current implementation does not support:
-
-* The inclusion of extended sources
-* Production of images in more than one energy band
+#.. plot:: tutorials/catalog/simulated_image_demo.py
+#	:include-source:

docs/tutorials/catalog/simulated_image_demo.py

@@ -6,7 +6,7 @@
 from aplpy import FITSFigure
 from gammapy.astro import population
 from gammapy.datasets import FermiGalacticCenter
-from gammapy.image import SkyImage, catalog_image
+from gammapy.image.catalog import SkyImage, catalog_image
 from gammapy.irf import EnergyDependentTablePSF
 from gammapy.utils.random import sample_powerlaw
 

docs/tutorials/catalog/source_image_demo.py

@@ -2,27 +2,22 @@
 """
 import numpy as np
 import matplotlib.pyplot as plt
-from aplpy import FITSFigure
-from gammapy.datasets import FermiGalacticCenter
-from gammapy.image import catalog_image, SkyImage
+from astropy import units as u
+from astropy.visualization import simple_norm
+from gammapy.image import CatalogImageEstimator, SkyImage
 from gammapy.irf import EnergyDependentTablePSF
+from gammapy.catalog import SourceCatalog3FHL
 
-# Create image of defined size
-reference = SkyImage.empty(nxpix=300, nypix=100, binsz=1).to_image_hdu()
-psf_file = FermiGalacticCenter.filenames()['psf']
-psf = EnergyDependentTablePSF.read(psf_file)
+# Create reference image
+reference = SkyImage.empty(nxpix=300, nypix=100, binsz=0.1)
+emin, emax = [10, 500] * u.GeV
 
-# Create image
-image = catalog_image(reference, psf, catalog='1FHL', source_type='point',
-                      total_flux='True')
+fermi_3fhl = SourceCatalog3FHL()
+estimator = CatalogImageEstimator(reference=reference, emin=emin, emax=emax)
 
-# Plot
-fig = FITSFigure(image.to_fits(format='fermi-background')[0], figsize=(15, 5))
-fig.show_colorscale(interpolation='bicubic', cmap='afmhot', stretch='log', vmin=1E-12, vmax=1E-8)
-fig.tick_labels.set_xformat('ddd')
-fig.tick_labels.set_yformat('dd')
-ticks = np.logspace(-12, -8, 5)
-fig.add_colorbar(ticks=ticks, axis_label_text='Flux (cm^-2 s^-1 TeV^-1)')
-fig.colorbar._colorbar_axes.set_yticklabels(['{:.0e}'.format(_) for _ in ticks])
-plt.tight_layout()
-plt.show()
+result = estimator.run(fermi_3fhl)
+
+flux = result['flux'].smooth(radius=0.2 * u.deg)
+
+norm = simple_norm(flux.data, stretch='log')
+flux.show(norm=norm)

gammapy/cube/sherpa_.py

@@ -422,10 +422,12 @@ def calc(self, pars, elo, xlo, ylo, ehi, xhi, yhi):
         # Convolve by the energy resolution
         etrue_band = self.true_energy.bands
         for ireco in range(self.dim_Ereco):
-            self.convolve_edisp[:, :, :, ireco] = np.moveaxis(spatial, 0, -1) * np.moveaxis(spectral, 0, -1) * \
-                                                  self.edisp[:, ireco] * etrue_band
+            self.convolve_edisp[:, :, :, ireco] = (np.rollaxis(spatial, 0, spatial.ndim)
+                                                   * np.rollaxis(spectral, 0, spectral.ndim)  
+                                                   * self.edisp[:, ireco] * etrue_band)
         # Integration in etrue
-        model = np.moveaxis(np.sum(self.convolve_edisp, axis=2), -1, 0)
+        sum_model = np.sum(self.convolve_edisp, axis=2)
+        model = np.rollaxis(sum_model, -1, 0)
         if not self.select_region:
             return model.ravel()
         else:

gammapy/image/models/models.py

@@ -21,8 +21,7 @@
 
 
 class Shell2D(Fittable2DModel):
-    """
-    Projected homogeneous radiating shell model.
+    """Projected homogeneous radiating shell model.
 
     This model can be used for a shell type SNR source morphology.
 
@@ -47,7 +46,7 @@ class Shell2D(Fittable2DModel):
 
     See Also
     --------
-    Sphere2D, Delta2D, `~astropy.modeling.models.Gaussian2D`
+    Sphere2D, Delta2D, Gaussian2D
 
     Notes
     -----
@@ -162,8 +161,7 @@ def bounding_box(self):
 
 
 class Sphere2D(Fittable2DModel):
-    """
-    Projected homogeneous radiating sphere model.
+    """Projected homogeneous radiating sphere model.
 
     This model can be used for a simple PWN source morphology.
 
@@ -182,10 +180,9 @@ class Sphere2D(Fittable2DModel):
         function. If not set the 'amplitude' parameter corresponds to the
         peak value of the function (value at :math:`r = 0`).
 
-
     See Also
     --------
-    Shell2D, Delta2D, `~astropy.modeling.models.Gaussian2D`
+    Shell2D, Delta2D, Gaussian2D
 
     Notes
     -----
@@ -278,8 +275,7 @@ def bounding_box(self):
 
 
 class Delta2D(Fittable2DModel):
-    """
-    Two dimensional delta function .
+    """Two dimensional delta function .
 
     This model can be used for a point source morphology.
 
@@ -292,10 +288,6 @@ class Delta2D(Fittable2DModel):
     y_0 : float
         y position center of the point source
 
-    See Also
-    --------
-    Shell2D, Sphere2D, `~astropy.modeling.models.Gaussian2D`
-
     Notes
     -----
     Model formula:
@@ -309,6 +301,10 @@ class Delta2D(Fittable2DModel):
                     \\end{array}
                 \\right.
 
+    See Also
+    --------
+    Shell2D, Sphere2D, Gaussian2D
+
     """
 
     amplitude = Parameter('amplitude')
@@ -336,8 +332,7 @@ def evaluate(x, y, amplitude, x_0, y_0):
 
 
 class Template2D(Fittable2DModel):
-    """
-    Two dimensional table model .
+    """Two dimensional table model.
 
     Parameters
     ----------
@@ -346,7 +341,7 @@ class Template2D(Fittable2DModel):
 
     See Also
     --------
-    Shell2D, Sphere2D, `~astropy.modeling.models.Gaussian2D`
+    Shell2D, Sphere2D, Gaussian2D
 
     """
     amplitude = Parameter('amplitude')