Add information about DEM management in SAR notebook #61

sertit · Nov 29, 2022 · 11629a0 · 11629a0
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diff --git a/CHANGES.md b/CHANGES.md
@@ -12,6 +12,7 @@
   PATH)
 - DOC: Add Technical Note published in Remote Sensing MDPI in Readme
 - DOC: Update optical band mapping graphs (fix regression to 0.15.0 supported constellation)
+- DOC: Add information about DEM management in SAR notebook ([#61](https://github.com/sertit/eoreader/issues/61))
 - CI: Update Github actions
 
 ## 0.17.0 (2022-10-12)

diff --git a/docs/notebooks/SAR.ipynb b/docs/notebooks/SAR.ipynb
@@ -265,18 +265,27 @@
    },
    "source": [
     "For SAR data, the footprint needs the orthorectified data !\n",
-    "For that, SNAP uses its own DEM, but you can change it when positionning the `EOREADER_SNAP_DEM_NAME` environment variable. \n",
+    "For that, SNAP uses its own DEM, but you can change it when positionning the `EOREADER_SNAP_DEM_NAME` environment variable.\n",
+    "\n",
     "Available DEMs are:\n",
     "- `ACE2_5Min` \n",
     "- `ACE30`\n",
     "- `ASTER 1sec GDEM`\n",
-    "- `Copernicus 30m Global DEM`\n",
+    "- `Copernicus 30m Global DEM` (by default)\n",
     "- `Copernicus 90m Global DEM`\n",
-    "- `GETASSE30` (by default)\n",
+    "- `GETASSE30`\n",
     "- `SRTM 1Sec HGT`\n",
     "- `SRTM 3Sec`\n",
     "- `External DEM`\n",
     "\n",
+    "For example:\n",
+    "\n",
+    "```python\n",
+    "import os\n",
+    "from eoreader.env_vars import SNAP_DEM_NAME\n",
+    "os.environ[SNAP_DEM_NAME] = \"GETASSE30\"\n",
+    "```\n",
+    "\n",
     "<div class=\"alert alert-warning\">\n",
     "  \n",
     "<strong>Warning:</strong> \n",