437 lines
14 KiB
HTML
437 lines
14 KiB
HTML
<html>
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<title>GFESuite Documentation - Controlling the Spatial Editor</title>
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<body>
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<h1 align=center>Controlling The Spatial Editor</h1>
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<p>
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<br>
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<a href="#SpatialEditorLegends">Spatial Editor Legends</a>
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<br>
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<a href="#LegendPop-upMenu">Legend Pop-Up Menu</a>
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<br>
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<a href="#TogglingtheLegends">Toggling the Legends</a>
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<br>
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<a href="#MapBackgroundOptions">Map Background Options</a>
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<br>
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<a href="#ChangingSEDisplayUsingLegends">Changing the Spatial Editor
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Display Using the Legends</a>
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<br>
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<a href="#ToggleGridVisibility">Toggle Grid Visibility</a>
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<br>
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<a href="#ToggleGridEditState">Toggle Grid Edit State</a>
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<br>
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<a href="#ChangingSEDisplayusingGridMgr">Changing the Spatial Editor
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Display Using the Grid Manager</a>
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<br>
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<a href="#MakingaGridVisible">Making a Grid Visible and Editable
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with the Grid Manager</a>
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<br>
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<a href="#ZoomingtheSpatialDisplay">Zooming (Enlarging) the Spatial
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Display</a>
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<br>
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<a href="#AshortcutforZooming">A Shortcut for Zooming</a>
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<br>
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<a href="#PanningtheSpatialDisplay">Panning the Spatial Display</a>
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<br>
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<a href="#Topography">Topography</a>
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</p>
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<hr width="100%">
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<a name="ControllingtheSpatialEditor"></a>Controlling the Spatial Editor</h1>
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<div class="Body">The Spatial Editor is controlled from the Spatial
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Editor
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legends, Grid Manager, Time Scale or the Button Bar, depending on what
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part of the display you wish to change. First we cover animation, then
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discuss how to make weather elements visible and editable with Spatial
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editor legends or the Grid Manager. Finally we talk about Edit Areas
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before
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moving on to the edit tool exercises.</div>
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<br>
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<h3 class="2Heading"><a name="SpatialEditorLegends"></a>Spatial Editor
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Legends</h3>
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<div class="Body">The figure below is a snapshot of the Spatial Editor
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legends located in the lowest portion of the display. Not only do
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legends
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control the Spatial Editor, but they also convey information about the
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data current displayed in the Spatial Editor.</div>
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<div class="Body"><img nosave="" src="images/SELegend.gif" height="90"
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width="589"></div>
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<div class="Body">
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<br>
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Much like the AWIPS display, the Spatial editor legends tell you which
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weather elements are loaded, which are displayed (and not displayed),
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which
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weather element is displayed as an image and which is currently
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editable.
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We discuss each state below.</div>
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<div class="Body">
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<br>
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<b>Not Displayed</b> - Weather elements that are not currently visible
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in the Spatial Editor are displayed in gray. If no grid occurs at the
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Spatial
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editor time, the legend date and time are replaced by "<No Grid>".</div>
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<div class="Body">
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<br>
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<b>Displayed as a Graphic</b> - Weather elements that are currently
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displayed as a graphic (contours) are indicated by a legend whose color
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matches that of the graphic.</div>
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<div class="Body">
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<br>
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<b>Displayed as an Image</b> - If a weather element is displayed as
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an image in the spatial editor, its corresponding legend is white in
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color.
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Only one weather element may be displayed as an image at a time. When
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you
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display a particular weather element as an image, any element
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previously
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displayed as an image will be displayed as a graphic.</div>
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<div class="Body">
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<br>
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<b>Editable</b> - Any time a weather element is editable, the
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characters
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"(edit)" appear immediately to the left of the legend.
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In addition to its color, the legend text tells you
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much
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about the grid(s) currently displayed in the Spatial Editor. Below we
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list
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an example and explain each part.</div>
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<div class="header">
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<br>
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<b>(edit) T Fcst (BOU) 1H Fri 12Z 02-Jun-00</b></div>
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<div class="Body">
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<br>
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<b>(edit)</b> - This weather element is the editable weather element.
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When edit operations are executed, the element is modified.</div>
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<div class="Body"><b>T</b> - The weather element identifier. In this
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example,
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it refers to Temperature.</div>
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<div class="Body"><b>SFC Fcst</b> - The name of the database. In this
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case
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it is the forecast database. Other choice may include: NAM, MRF, AVN,
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GFS,
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and LAPS. For D2D grids, the name may include the level as well
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(e.g.,
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500mb).</div>
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<div class="Body"><b>(BOU)</b> - WFO over which this grid is valid.
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<br>
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<b>(F)</b> - units of this weather element. In this case degrees F.</div>
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<div class="Body"><b>1H</b> - Number of hours this grid is valid. In
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this
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example the grid is valid for one hour.</div>
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<div class="Body"><b>Fri</b> - The day of the week.</div>
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<div class="Body"><b>18Z 02-Jun-00</b> - Start time of the grid (hour
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(GMT),
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day of the month, month and year.
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<p>For persistent grids, i.e., grids that have no associated valid
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time,
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the word "Persistent" is shown in the spatial editor legend.
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Although
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Topography is a persistent grid, it will not contain the "Persistent"
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label.
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<br>
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</p>
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<h1><a name="LegendPop-upMenu"></a>Legend Pop-up Menu</h1>
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Much like the D2D display system, the GFE Spatial Editor Legends
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provide
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many option for controlling the display. To display the
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pop-up
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menu, move the cursor over any legend and press MB3. The options
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available
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on the legend pop-up menu include appearance items, control items, and
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grid operations. Examples of the appearance items are changing the
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color
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table, graphic color, line width and style, setting the contour values,
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density, and magnification. Examples of the control items are unloading
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the weather element, displaying the weather element as an image or
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graphic,
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and setting the display attributes in image and graphic mode. The
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grid operations are nearly identical to those options available via the
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MB3 popup over the Grid Manager and include items such as deleting the
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grid, fragmenting it, assigning values, and copy/paste operations.
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<p>More information is available on the legend pop-ups in the <a
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href="Button3Popups.html#Legend">Button
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3 Popups Reference Guide</a> .
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<br>
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</p>
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</div>
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<h3 class="2Heading">
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<a name="TogglingtheLegends"></a>Toggling the Legends</h3>
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<div class="Body">By default, the legends display information about the
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grids that are currently loaded. But the legends can be toggled off to
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remove clutter from the display. To learn how to toggle the legends,
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perform
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the next exercise. Before you begin, select a time in the Grid Manager
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so that a grid is visible in the Spatial Editor and make sure one of
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the
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map backgrounds is displayed.</div>
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<div class="Step-First">
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<ol>
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<li>Move the cursor into the Spatial Editor (away from the legends)
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and
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press
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and hold MB3.</li>
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<li>A pop-up menu will appear displaying a list of choices. From this
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list
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select <b>Legends->Hide</b>.</li>
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</ol>
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The grid data legends will disappear from the display. To display
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them again select <b>Legends->Show All Weather Elements</b> from
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the MB3
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pop-up over the Spatial Editor display.</div>
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<div class="Body">
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<br>
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The map background graphics may be toggled on and off as well.
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By default, map background graphic legends are not displayed. You
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can display them by pressing MB3 over the Spatial Editor display and
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selecting
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<b>Legends->Show
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Map</b>. Note that either the Weather Element legends or the Map
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Background legends may be displayed at any given time, but not both.
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<p>There are several other options available when toggling the
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legends.
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You can choose to just display the Fcst weather elements, or just the
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active
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weather element.
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<br>
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</p>
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<p><a name="MapBackgroundOptions"></a><b><font size="+1">Map Background
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Options</font></b>
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</p>
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<p>Once you toggle the map legends so that they are displayed you may
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change
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the map color or unload the map via a MB3 pop-up menu. To access
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these options, move the cursor over one of the map legends and press
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and
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hold MB3. Options available include changing the graphic color,
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line
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width, style, and unloading the map background. More information
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is available on the legend pop-ups in the <a
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href="Button3Popups.html#Legend">Button
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3 Popups Reference Guide</a> .
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<br>
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</p>
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</div>
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<h3 class="2Heading">
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<a name="ChangingSEDisplayUsingLegends"></a>Changing the Spatial Editor
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Display using the Legends</h3>
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<div class="Body">Modifying the look of the Spatial editor display
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works
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very much like the AWIPS. The table below describes functions
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implemented
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by the legends (in the normal Grid display mode).</div>
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<br>
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<table border="1">
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<tbody>
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<tr>
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<th>
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<div class="CellHeading">Action</div>
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</th>
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<th>
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<div class="CellHeading">Function</div>
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</th>
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</tr>
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<tr>
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<td>
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<div class="CellBody">MB1 click</div>
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</td>
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<td>
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<div class="CellBody">Toggle visibility</div>
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</td>
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</tr>
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<tr>
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<td>
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<div class="CellBody">MB2 click</div>
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</td>
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<td>
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<div class="CellBody">Toggle Edit state</div>
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</td>
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</tr>
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</tbody>
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</table>
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<h3 class="3Heading">
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<a name="ToggleGridVisibility"></a>Toggle Grid Visibility</h3>
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<div class="Body">Clicking MB1 on the legend will toggle a weather
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element's
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visibility. If it was visible before the click, it will be made
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invisible.
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If the weather element was invisible it will be made visible. Note that
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the Spatial Editor Time must be set such that a grid's valid period
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must
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intersect it.
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<blockquote><li class="4Heading"> <b>Purpose:</b> To make a grid
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visible or invisible</li>
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</blockquote>
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</div>
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<div class="Step-First">
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<ol>
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<li>Make sure that there is a weather element loaded and that the
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Spatial
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Editor
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time is set so that it overlaps a grid.</li>
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<li>Click MB1 on the weather element's legend.</li>
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</ol>
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</div>
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<h3 class="3Heading">
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<a name="ToggleGridEditState"></a>Toggle Grid Edit State</h3>
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<div class="Body">If you wish to edit a grid, you must first make the
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grid
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editable. To make the grid editable, simply click MB2 over the legend.
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Anytime a weather element is editable, the letters "(edit)" appear
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immediately
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to the left of the legend. Note that your grid may be displayed as an
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image
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if the "Image on Edit" mode is enabled.
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<blockquote><li class="4Heading"> <b>Purpose:</b> To make a grid
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editable</li>
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</blockquote>
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</div>
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<div class="Step-First">
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<ol>
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<li>As in the previous exercise, make sure that there is a weather
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element
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loaded and that the Spatial Editor time is set so that it overlaps a
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grid.</li>
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<li>Make the weather element visible by clicking MB1, if it is not
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already
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visible.</li>
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<li>Click MB2 on the weather element editable.</li>
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</ol>
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</div>
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<div class="Body">You should see the letters "(edit)" appear to the
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left
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of the legend. This indicates that the weather element is now ready to
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edit. Note that if the displayed grid is not editable, because is
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locked
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by another user or that it is a read-only model grid, the "(edit)"
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string
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will not appear, since the GFE will not allow you edit grids in those
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states.</div>
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<h3 class="2Heading">
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<a name="ChangingSEDisplayusingGridMgr"></a>Changing the Spatial Editor
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Display using the Grid Manager</h3>
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<div class="Body">In the Grid Manager section we discussed that fact
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that
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the Grid Manager tool allows you to set the time displayed in the
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Spatial
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Editor and make grid editable. So we briefly switch back to the Grid
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Manager
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to explain how it is used to control the Spatial Editor.</div>
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<h3 class="2Heading">
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<a name="MakingaGridVisible"></a>Making a Grid Visible and Editable
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with
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the Grid Manager</h3>
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<ul>
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<li class="4Heading"> <b>Purpose:</b> Identify a grid to edit</li>
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</ul>
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<div class="Step-First">
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<ol>
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<li>Locate a grid and click MB1 over the grid block in the Grid
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Manager.</li>
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</ol>
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</div>
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<div class="Body">Note that the grid is now visible in the Spatial
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Editor
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and is now in edit mode. Any Spatial Editor operation executed will be
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applied to this grid. Cases where this operation will not work include
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immutable weather elements such as those derived from model data and
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grid
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that are locked by another user of the forecast database.</div>
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<h3 class="2Heading">
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<a name="ZoomingtheSpatialDisplay"></a>Zooming (enlarging) the Spatial
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Display</h3>
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<div class="Body">The Spatial Editor display can be zoomed or enlarged
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at any time using the MB3 pop-up menu. When this menu is displayed, you
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are given a choice of zoom factors that represent the width of the
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display
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in kilometers. Selecting one of these choices will cause the display to
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zoom to that size centered wherever you pressed MB3.
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<blockquote><li class="4Heading"> <b>Purpose:</b> To make the larger
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or smaller in order to see more
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or less
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detail.</li>
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</blockquote>
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</div>
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<div class="Step-First">
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<ol>
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<li>From the Spatial editor display, press and hold down MB3. A
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pop-up menu
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will appear containing the "Zoom" menu item</li>
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<li>Move the cursor to this "Zoom" menu item until another cascading
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menu
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of
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numbers appears.</li>
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<li>Move the mouse cursor over one of the choices in the middle of
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the
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number
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list and release MB3.</li>
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</ol>
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</div>
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<div class="Body">You should see the display zoom in and enlarge the
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size
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of the data and map backgrounds. Repeat the last exercise and select
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the
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highest value in the list to zoom out to full view.</div>
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<div class="Body">
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<h3 class="2Heading"><a name="AshortcutforZooming"></a>A shortcut for Zooming</h3>
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<!--TRAC DR 7132-->
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Another, faster way to zoom the Spatial Editor display is to press the
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SHIFT key on the keyboard and click MB2 to zoom in. In AWIPS1 MB1 was used
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to zoom out. In AWIPS2 for now you have to roll MB2 in to zoom out.
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Zooming in always uses the clicked point as the new center of the
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display. Panning has to be activated for zooming capabilities to work.
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<h3 class="2Heading"><a name="PanningtheSpatialDisplay"></a>Panning the
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Spatial Display</h3>
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Panning the display works similarly. Rolling
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MB2 in or out will pan the display in the same direction, just like.
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Note that if you move the cursor outside the Spatial
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Editor
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display area, the pan operation stops. To continue panning, you will
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need
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to reposition the cursor, and roll MB2 again.</div>
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<h3 class="2Heading">
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<a name="Topography"></a>Topography</h3>
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<div class="Body">The GFE includes topography as a special weather
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element.
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Topography can be displayed with any other weather element, except that
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it cannot be edited. To load topography into the GFE, perform the
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exercise
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below.
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<blockquote><li>Purpose: To load and display topography data</li>
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</blockquote>
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</div>
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<div class="Step-First">
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<ol>
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<li>From the main menu, select Maps ->Topography.</li>
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</ol>
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</div>
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<div class="Body">You should now see an image that represents the
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topography
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over your county warning area. The image is generated from a terrain
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database
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and mapped to your office's projection and domain. While you cannot
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edit
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topography data, it can be used to identify edit areas based on
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elevation.
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We will discuss more about defining edit areas based on gridded values
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in the next section.
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</body>
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</html>
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