200 lines
7.8 KiB
HTML
200 lines
7.8 KiB
HTML
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<html>
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<title>GFESuite Documentation - Smart Tools</title>
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<body>
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<h1 align=center>Smart Tools Procedures</h1>
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<!-- Leave this comment for formatting purposes -->
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<a href="#ExecuteSS">Executing
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Procedures</a> <br>
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<a href="#ExProc1">Exercise Procedure-1 -- Creating
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a Procedure</a> <br>
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<a href="#ExProc2">Exercise Procedure-2 -- Using
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the Smart Script Library from a Procedure</a> <br>
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<a href="#ExProc3">Exercise Procedure-3 -- Running
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Procedures in the Background</a>
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<!-- Leave this comment for formatting purposes -->
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<hr width="100%">
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<h1 class="2Heading">
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<a name="SS"></a><u><font size="+4">Procedures</font></u></h1>
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<img width="487" height="5" src="images/SmartTools-1.gif">
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<div class="Body">Once we have a set of Smart Tools, it is natural to
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want
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to execute related tools together in succession and to perform other
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operations
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such as copying, creating, and interpolating grids. For this, we have
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Procedures.
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The following diagram depicts the Procedure architecture within the
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GFESuite
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software. It shows Procedures as a sequence of commands which modify
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the
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Forecast database. Like Smart Tools, these commands are written in
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Python,
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but operate at a higher level through the Smart Script Library to copy
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the Forecast database from models, interpolate grids, and call Smart
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Tools.
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The GFESuite software locates the procedure, sets up information to be
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passed to it, and invokes it. Procedures can be run from the GFE or in
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background mode.
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<br>
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<div class="Body"><img width="1200" height="800"
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src="images/SmartTools-9.jpg"></div>
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<p><br>
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Using procedures you can:</p>
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</div>
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<ul>
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<li class="Bullet-List">Copy grids from a model into your forecast</li>
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<li class="Bullet-List">Remove grids from the forecast</li>
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<li class="Bullet-List">Interpolate gaps in your forecast</li>
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<li class="Bullet-List">Assign the default value to a set of grids</li>
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<li class="Bullet-List">Create grids from scratch</li>
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<li class="Bullet-List">TimeShift grids of your choice</li>
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<li class="Bullet-List">Call Smart Tools</li>
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<li class="Bullet-List">Call other Procedures</li>
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</ul>
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</div>
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<h3 class="3Heading">
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<a name="ExecuteSS"></a>Executing Procedures</h3>
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<div class="Body">Procedures can be set up to appear under various menu
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items on the GFE Main Menu. Keep in mind that you can make a
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procedure
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that can take several minutes to complete, particularly if it includes
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a lot of interpolation.</div>
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<div class="Step-First">
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<ol>
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<li>Try executing the QPF_SnowAmt Procedure which appears under
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Main
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Menu --> Edit and runs the QPF_SmartTool followed by the
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SnowAmt_SmartTool.</li>
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</ol>
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</div>
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NOTE: Procedures can be run in background mode from the command line.
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For
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instructions, see the <a href="runProcedure.html">runProcedure</a>
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documentation
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and <a href="#ExProc3">Exercise Procedure-3</a> below.
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<h3 class="3Heading"><a name="ExProc1"></a>Exercise Procedure-1 --
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Creating a Procedure</h3>
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<div class="Body">For the following exercise, choose two or more tools
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from the Smart Tool list you would like to run in sequence. One
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possibility
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would be to run the Assign_Value tool followed by the Smooth tool.</div>
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<div class="Step-First">
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<ol>
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<li>Choose Main Menu-->GFE-->Define Procedures. From the
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MB3
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Pop-up on
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the Procedures folder, choose New....</li>
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<li>Enter a Name for your Procedure.</li>
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<li>Select OK. A Python Editor window will appear with the Procedure
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template.</li>
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<li>The MenuItems list defines the GFE menu item(s) under which the
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Procedure
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is to appear. Possible items are: Populate, Edit, Consistency,
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Verify, and Hazards.
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Set up the MenuItems list, perhaps listing "Edit" as the item under
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which
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you want your procedure to appear.</li>
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<li>Make sure the Tools you want to run in your procedure (if any)
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appear
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in
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the proper order in the Tool List. Specify the weather element to be
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modified
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by the tool. If you want the tool to modify the active element,
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whatever
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it may be, enter "variableElement" for the element name. This is likely
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to be your choice for tools like Assign_Value or Smooth.</li>
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<li>Save the Python file and run your Procedure.</li>
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</ol>
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</div>
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<div class="Body">Note: If any of the tools in your procedure need
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user-supplied
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variables, the system will automatically ask the user for them when
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your
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procedure is run. Procedures can be simple or extremely powerful
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because
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of the availability of the Smart Script Class library. (<a
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href="SmartScriptClass.html">See
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the section describing this library</a>)
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<p><a href="SmartToolsExerciseAnswers.html#AnswerProc1">Answer to Procedure Exercise 1</a></p>
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<h3 class="3Heading"><a name="ExProc2"></a>Exercise Procedure-2 --
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Using the SmartScript Library
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from a Procedure</h3>
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<div class="Body">The Smart Script library contains methods for
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"procedure-type"
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commands which allow you to copy data from models, create grids from
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scratch
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and perform interpolation, as well as methods for calling Smart
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Tools. In this exercise, we'll create a Procedure to call some of
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these commands.
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<blockquote><li>Study the SmartScript Libary commands: <a
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href="SmartScriptClass.html#copyCmd">copyCmd</a>, <a
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href="SmartScriptClass.html#createFromScratchCmd">createFromScratchCmd</a>,
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<a href="SmartScriptClass.html#getDatabase">getDatabase</a>,
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and <a href="SmartScriptClass.html#createTimeRange">createTimeRange</a>.</li>
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<li>Study the SmartScript Library section on "<a
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href="SmartScriptClass.html#Calls">Calling
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Smart Tools and Procedures</a><a href="SmartScriptClass.html#Proc">.</a>"</li>
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<li>From the Define Procedures Dialog Procedures Window, select
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MB3-->New.</li>
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<li>Name your Procedure and select OK.</li>
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<li>Include a VariableList with a "model" field for the user to
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select
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an IFP input model.</li>
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<li>Use the SmartScript Library commands: getDatabase,
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createTimeRange,
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copyCmd,
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createFromScratchCmd, and callSmartTool to:</li>
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<ul>
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<li>Create a databaseID for the chosen model,</li>
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<li>Create a time range based on the model (perhaps the first 12
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hours),</li>
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<li>Copy the grids from the model for the new time range,</li>
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<li>Create 1-hour T grids every 3 hours over the new time range,</li>
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<li>Run the Smart Tool from Exercise SmartScript-4 over the new
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time range,
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interpolating for missing data by setting the <a
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href="GFEMainMenu.html#MissingDataMode">Missing
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Data Mode</a>. Pass the varDict from the Procedure to the Smart
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Tool
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in the "callSmartTool" command so that the VariableList dialog does not
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appear twice. For this to work, make sure that the VariableList model
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field
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has the same name as that in the Smart Tool.</li>
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</ul>
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<li>Run and test your Procedure to make sure it works.
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Note
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that
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the Procedure could take some time to execute since the Smart Tool is
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being
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called over a time range of grids. You can notice the progress of
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execution in the progress bar at the bottom right of the display.
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Also, if you are running the GFE from a terminal window with a -console
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argument, you will see status messages appear in the window.</li>
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<p><a href="SmartToolsExerciseAnswers.html#AnswerProc2">Answer to Procedure Exercise 2</a></p>
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</blockquote>
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</div>
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</div>
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</div>
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<h3 class="3Heading">
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<a name="ExProc3"></a>Exercise Procedure-3 -- Running Procedures in the
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Background</h3>
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<div class="Body">Procedures which are routine or take time to execute
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can be run in background mode. This exercise will show you how to do
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this.
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<blockquote><li>Study the documentation and example for the <a
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href="runProcedure.html">runProcedure</a>
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command.</li>
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<li>Run your the procedure of Exercise Procedure-1 from the command
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line
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using
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the "runProcedure" command. Note you will need to specify an edit
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area and a time range. Also, since you will be running the
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Procedure
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outside the context of the GFE, you will have to reference
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specific
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weather elements instead of "variableElement" in your ToolList.</li>
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<p><a href="SmartToolsExerciseAnswers.html#AnswerProc3">Answer to Procedure Exercise 3</a></p>
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</blockquote>
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</div>
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</div>
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