tickets/PREOPS-4976: Update documentation for conda availability and data source options

docs/installation.rst

@@ -1,62 +1,65 @@
 Installation
 ============
 
-Installing with ``pip``
------------------------
+Installing with ``conda``
+-------------------------
 
-Begin by installing ``rubin_sim``.
-Note that ``rubin_sim`` is not presently available through ``pypi``, so you will need to use ``conda``, following the instructions on the ``rubin_sim`` documentation:
+``schedview`` can be installed using ``conda``.
+If you want to add it to an existing ``conda`` environment::
 
-::
+  $ conda install -c conda-forge schedview
 
- $ conda create -n rubin-sim -c conda-forge rubin_sim # Create a new environment
- $ conda activate rubin-sim
- $ rs_download_data  # Downloads ~2Gb of data to $RUBIN_SIM_DATA_DIR (~/rubin_sim_data if unset)
- $ conda install -c conda-forge jupyter # Optional install of jupyter
+or, to use a dedicated environment for ``schedview``::
 
-Use ``pip`` to install ``schedview`` itself:
+  $ conda create --name schedview -c conda-forge schedview
 
-::
+``conda`` will take care of installing the needed python module dependencies,
+but some of the data needed by some of its dependencies are not installed
+automatically by ``conda``.
+To download the necessary data, see the data download pages
+`for rubin_scheduler <https://rubin-scheduler.lsst.io/data-download.html#data-download>`_
+and `for rubin_sim <https://rubin-sim.lsst.io/data-download.html#data-download>`_
+
+Installing with ``pip``
+-----------------------
+
+``schedview`` can be installed using ``pip``.
+Starting with whatever ``python`` environment you want to use active::
 
  $ pip install schedview
 
-Coming soon: ``conda install -c conda-forge schedview``
+``pip`` will take care of installing the needed python module dependencies,
+but some of the data needed by some of its dependencies are not installed
+automatically by ``pip``.
+To download the necessary data, see the data download pages
+`for rubin_scheduler <https://rubin-scheduler.lsst.io/data-download.html#data-download>`_
+and `for rubin_sim <https://rubin-sim.lsst.io/data-download.html#data-download>`_
+
 
 For developer use
 -----------------
 
-First, get the code by cloning the github project:
-
-::
+First, get the code by cloning the github project::
 
  $ git clone git@github.com:lsst/schedview.git
  $ cd schedview
 
-Create a ``conda`` environment with the appropriate dependencies, and activate it:
-
-::
+Create a ``conda`` environment with the appropriate dependencies, and activate it::
 
- $ conda create -n schedvie
+ $ conda create --name schedview -c conda-forge --only-deps schedview
  $ conda activate schedview
- $ conda install -f requirements.txt
 
-Install the (development) ``schedview`` in your new environment:
-
-::
+Install the (development) ``schedview`` in your new environment::
 
  $ pip install -e .
 
 Some additional packages are required to run the tests.
-To install the tests, install the dependenices, then run the tests:
-
-::
+To install the tests, install the dependenices, then run the tests::
 
  $ conda install -f test-requirements.txt
  $ pytest .
 
-Building the documentation requires the installation of ``documenteer[guide]``:
-
-::
+Building the documentation requires the installation of ``documenteer[guide]``::
 
  $ pip install "documenteer[guide]"
  $ cd docs

docs/usage.rst

@@ -4,14 +4,24 @@ Usage
 Running ``scheduler_dashboard``
 -------------------------------
 
-Activate the conda environment and start the app:
-
-::
+Begin by activating the conda environment::
 
     $ conda activate schedview
-    $ scheduler_dashboard
 
-The app will then give you the URL at which you can find the app.
+There are two ways to start the dashboard, depending on what you want to use
+as the source of data.
+One way is for users to enter arbitrary URLs or file paths from which to load
+the data. **This is insecure,** because users can point the dashboard to malicious
+snapshots. It is, however, much more flexible in a secure environment::
+
+    $ scheduler_dashboard --data-from-urls
+
+Alternately, the dashboard can be started with a flag to only allow users to
+load data from a pre-specified directory on the host running the dashboard::
+
+    $ scheduler_dashboard --data_dir /where/the/snapshot/pickles/are
+
+In either case, the app will then give you the URL at which you can find the app.
 
 Running ``prenight``
 --------------------