View Windowhas another menu with options for controlling just that view. In this section, we will explore some of the features of the
Projectionsmenus associated with each
View Windowalso has a View menu that lets you change the point of view, capture the state of the display, and make other changes in the overall view.
View Window Propertiesdialog with the
Show Wireframe Boxitem to turn off the 3D box in the display then click the
Applybutton. Check it again to turn the box back on and click the
Show Cursor Readoutitem to turn off the lat/lon/alt readout at the bottom of the
View Windowand click the
Clip View At Boxmenu item to turn off clipping of the map lines and other displays at the 3D box and click
Apply. Check it again to turn on clipping.
Show Times In Displayitem to turn on the time label in the view window. Uncheck the
Show Display Listitem and click
Apply. The Display List is no longer shown, but the time label is now shown. Note that the time is also shown as part of the Display List for each of the displays and in the
Time Animation Widget.
Setbuttons and selecting a new color. After making your selection, click
View->Showmenu to see which of the items we changed above are available. Use some of these to change your display.
View->Colormenu to change the foreground and background colors of the display. You can select one of the pre-defined foreground/background color pairs, or create your own. Select one of the predefined options to change the display colors. Select
View->Color->White on blackmenu to return to the system default.
View->Full Screenmenu to expand the view to the full screen. Click the X to return to normal screen mode.
Another useful menu item is the
This menu can be used to control which side of the 3D box you are looking at.
Westinstantly reset the point of view to one of the orthogonal directions. The menu icons show which side of the box will be displayed. Note that
Topis the same as the reset command Ctrl-r which we used earlier.
Southmenu then rotate the box with the keyboard or mouse to see the orientation.
Perspective Viewitem toggles between a parallel (unchecked) and perspective (checked) view. Check the box and see what effect it has.
Other Viewpoint menu items
Viewpoint Dialog... displays a dialog box for you to enter the azimuth and tilt of a desired point of view.
Vertical Scale...displays a dialog box to set the linear vertical
scaling between the top and bottom the wireframe box. The default
is 0 to 16 km. This can also be changed through the
Map projections define the region of the earth that you are viewing.
The IDV is configured with a set of pre-defined map projections.
In a later exercise, you will learn how to create your own. In
this exercise, we will learn how to change projections using the
The The The
Other Projections Menu Items
Vertical Scale tab of the
View Window Properties
let you change and define the map projection.
Projections->Predefined->US->CONUS menu item
to switch to the continental US projection.
Projections->From Displays menu has a list of projections
from the data of any displays.
Projections->History menu has a list of recently
Projections->New/Edit.. menu item is used
to bring up the
which is used to define projections. You will use this in a
later exercise to define your own projections.
Auto-set Projection menu
item allows you to control whether the display projection is changed
when you load in new data.
Share Views menu item allows you to share
the maps and projections between different
File->New->View Window->Map Display->One Pane menu item
to bring up a new
Projections->Set menu in each
View Window to change the
projections to be different in each display.
Projections->Share Views item in
by clicking the X in the upper right corner of the
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Map projections define the region of the earth that you are viewing. The IDV is configured with a set of pre-defined map projections. In a later exercise, you will learn how to create your own. In this exercise, we will learn how to change projections using the system set.
Other Projections Menu Items