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#!F-adobe-helvetica-medium-r-normal--18*
#!N 
#!CSeaGreen #!N 
 #!Rtcntxec Controlling Execution with Switch #!N #!EC #!N #!N  #!F-adobe-times-bold-r-normal--18*   Switch 
#!EF allows you to decide which portions of a visual program 
are executed (e.g., whether a data set is visualized with  #!F-adobe-times-bold-r-normal--18*   
Isosurface #!EF or  #!F-adobe-times-bold-r-normal--18*   MapToPlane #!EF ). #!N #!I0 #!N  #!F-adobe-times-medium-r-normal--18*   
#!N #!N #!I30 #!N 1. Open visual program .../Switch.net. #!N #!I30 
#!N 2. Select  #!F-adobe-times-bold-r-normal--18*   Execute on Change #!EF in the  #!F-adobe-times-bold-r-normal--18*   
Execute #!EF pull-down menu. The image that appears is a streamline 
representation of the data set. #!N #!I30 #!N 3. Select  #!F-adobe-times-bold-r-normal--18*   
Open All Control Panels #!EF in the  #!F-adobe-times-bold-r-normal--18*   Windows #!EF pull-down 
menu. You can now use the selector interactor to switch from 
one visualization to the other. #!N #!I0 #!N #!EF #!N #!N 
#!N You can modify the selector interactor and increase the number 
of choices. #!N #!I0 #!N  #!F-adobe-times-medium-r-normal--18*   #!N #!N #!I30 #!N 1. 
Double click on the interactor to open the  #!F-adobe-times-bold-r-normal--18*   Set Selector 
Attributes #!EF dialog box. #!N #!I30 #!N 2. Double click on 
the  #!F-adobe-times-bold-r-normal--18*   Value #!EF parameter field and type "3" in that 
space. #!N #!I30 #!N 3. Double click on the  #!F-adobe-times-bold-r-normal--18*   Label 
#!EF parameter field and type "MapToPlane." in that space. Note: The 
integer passed from  #!F-adobe-times-bold-r-normal--18*   Selector #!EF to the first input tab 
of  #!F-adobe-times-bold-r-normal--18*   Switch #!EF determines what input, if any, is passed 
on to another module. If the integer is "0" or greater 
than the number of objects being passed to the module, the 
output is NULL. Thus, "1" selects the first input (second input 
tab), "2" the second input (third input tab), and so on. 
#!N #!I30 #!N 4. Click on  #!F-adobe-times-bold-r-normal--18*   Add #!EF . A 
new third line should appear under the first two. #!N #!I30 
#!N 5. Click on  #!F-adobe-times-bold-r-normal--18*   OK #!EF to close the dialog 
box. If you click on the option button in the selector, 
you will see that it now offers a third choice. Leave 
the control panel open. #!N #!I0 #!N #!EF #!N #!N #!N 
The third choice shown in the Selector, however, is not yet 
operative (select  #!F-adobe-times-bold-r-normal--18*   MapToPlane #!EF in the control panel and reexecute 
the visual program). To implement this choice, you must incorporate a 
third visualization in the program, such as that represented by the 
program segment on the right side of the VPE canvas. This 
segment computes a MapToPlane of temperature data. #!N #!I0 #!N  #!F-adobe-times-medium-r-normal--18*   
#!N #!N #!I30 #!N 1. Click on the  #!F-adobe-times-bold-r-normal--18*   Switch #!EF 
icon to highlight it. #!N #!I30 #!N 2. Select  #!F-adobe-times-bold-r-normal--18*   Add 
Input Tab #!EF in the  #!F-adobe-times-bold-r-normal--18*   Edit #!EF pull-down menu. A 
new input tab is added to  #!F-adobe-times-bold-r-normal--18*   Switch #!EF . #!N 
#!I30 #!N 3. Connect the first ("mapped") output tab of the 
 #!F-adobe-times-bold-r-normal--18*   AutoColor #!EF icon (below the MapToPlane icon) to the new 
input tab of  #!F-adobe-times-bold-r-normal--18*   Switch #!EF . #!N #!I30 #!N 4. 
Select  #!F-adobe-times-bold-r-normal--18*   MapToPlane #!EF in the control panel and reexecute the 
visual program. The  #!F-adobe-times-bold-r-normal--18*   MapToPlane #!EF visualization appears in the Image 
window. #!N #!I0 #!N #!EF #!N Note: Switch selects among inputs. 
The corresponding module that selects among outputs is Route. Both are 
described in IBM Visualization Data Explorer User's Reference. #!N #!N #!N 
 #!F-adobe-times-medium-i-normal--18*   Next Topic #!EF #!N #!N  #!Ltcnfgbx,dxall61 h Controlling Inputs: Configuration Dialog Boxes  #!EL  #!N  #!F-adobe-times-medium-i-normal--18*   #!N 