jrob93-patch: deep_coadd save to fits

DP2/200_Data_products/202_Images/202_1_Deep_coadds.ipynb

@@ -74,7 +74,7 @@
     "### 1.1. Import packages\n",
     "\n",
     "From the LSST Science Pipelines import the packages for the Butler, 2-dimensional sky geometry, and for image display.\n",
-    "Also import the `numpy` package, `matplotlib` plotting tools, and `Astropy` coordinate utilities."
+    "Also import the `numpy` package, `matplotlib` plotting tools, and `Astropy` coordinate utilities. Import `os` and `getpass` for setting up a temporary directory to save files."
    ]
   },
   {
@@ -92,7 +92,9 @@
     "import astropy.units as u\n",
     "import matplotlib.pyplot as plt\n",
     "from matplotlib.collections import PatchCollection\n",
-    "import numpy as np"
+    "import numpy as np\n",
+    "import os\n",
+    "import getpass"
    ]
   },
   {
@@ -1845,16 +1847,80 @@
    "outputs": [],
    "source": [
     "del ref, dataId, use_tract, use_patch, use_columns, objects, tx\n",
-    "del dataset_refs, deep_coadd"
+    "del dataset_refs"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "c06ebdd7-482a-43a6-aed8-4ed053c8d184",
+   "metadata": {},
+   "source": [
+    "## 6. Save `deep_coadd` to file\n",
+    "`deep_coadd` is a `CellCoadd` object type and has an associated method to write the object to file, as described in the [API](https://images.lsst.io/api/lsst.images.cells.CellCoadd.html#lsst.images.cells.CellCoadd.write). It is recommended for users to save temporary files in the shared scratch directory, `/deleted-sundays/`, in sub-directories named with their RSP username."
    ]
   },
   {
    "cell_type": "code",
    "execution_count": null,
+   "id": "6f0887f4-b789-42d7-b1da-931d2e42e45b",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "username = getpass.getuser()\n",
+    "print('username: ', username)\n",
+    "\n",
+    "userdir = '/deleted-sundays/' + username\n",
+    "if not os.path.exists(userdir):\n",
+    "    os.makedirs(userdir)\n",
+    "    print('Created ', userdir)\n",
+    "else:\n",
+    "    print('Directory already existed: ', userdir)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "aa295f27-e9df-42cc-9911-192bb3798458",
+   "metadata": {},
+   "source": [
+    "Uncomment the following cell to save `deep_coadd` as a FITS file in the scratch directory."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "255b693c-4767-4152-addf-1d98a7276783",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# save_file = \"{}/deep_coadd_{}_{}_{}_{}.fits\".format(\n",
+    "#         userdir,\n",
+    "#         deep_coadd.skymap,\n",
+    "#         deep_coadd.tract,\n",
+    "#         deep_coadd.patch.id,\n",
+    "#         deep_coadd.band\n",
+    "#     )\n",
+    "\n",
+    "# print(\"save file: {}\".format(save_file))\n",
+    "# deep_coadd.image.write(save_file)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
    "id": "8270ac15-73ee-4e87-ab72-f0a12b3c455f",
    "metadata": {},
+   "source": [
+    "Clean up."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "7cf73981-189c-401d-bde8-e6e8fc26b31e",
+   "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "del deep_coadd"
+   ]
   }
  ],
  "metadata": {