#!F-adobe-helvetica-medium-r-normal--18* #!N #!CNavyBlue #!N #!Rexvp Executing a Visual Program #!N #!EC #!N #!N After you set up a visual program in the VPE window and build any desired Control Panels (or after you open an existing visual program file), you can execute the visual program program. The resulting image appears in the Image window. This section explains how to execute a visual program. Section #!Luseimag,dxall299 h Using the Image Window #!EL describes how to manipulate images in the Image window by using direct interactors. You can also manipulate images in the Image window using interactors in the Control Panels, the Colormap Editor, and the Sequencer. (For more information on these tools, see #!Lbuico,dxall380 h Using Control Panels and Interactors #!EL , #!Lcolrmap,dxall794 h Colormap #!EL , and #!Lsequenc,dxall939 h Sequencer #!EL in IBM Visualization Data Explorer User's Reference.) #!N #!N You can execute the visual program from the #!F-adobe-times-bold-r-normal--18* Execute #!EF menu of a VPE window, a Control Panel, an Image window, or a Message window. The options are the same in all four windows. When a visual program is executed, an Image window is created if one is not already open. (You can also control execution using the Execute module. See IBM Visualization Data Explorer User's Reference.) #!N Note: If the #!F-adobe-times-bold-r-normal--18* Execute #!EF options are grayed-out, your workstation may not be connected to the server. For information about connecting to the server, see #!Lconserv,dxall493 h Connecting to the Server #!EL . #!N Although you can initiate execution from the Control Panel, VPE, Image, and Message windows, you may find it more efficient to execute your visual program through the Control Panel menu (if you are using a Control Panel). This efficiency is due to the ease with which you can change inputs with interactors and initiate execution. #!N #!N You can choose one of four options from the #!F-adobe-times-bold-r-normal--18* Execute #!EF menu when executing a visual program. Select the first option, #!F-adobe-times-bold-r-normal--18* Execute Once #!EF , to execute the program once, using the values currently set in the interactors. If you change any interactor values after execution, the visual program does not automatically execute; you must again choose an option from the #!F-adobe-times-bold-r-normal--18* Execute #!EF menu to execute the altered program. #!N #!N Choosing the #!F-adobe-times-bold-r-normal--18* Execute on Change #!EF option causes the visual program to execute every time you change an interactor setting. If you change values faster than Data Explorer can generate images, the system executes the program as quickly as possible, always using the current settings at the time an execution cycle begins. If you modify your visual program while #!F-adobe-times-bold-r-normal--18* Execute on Change #!EF is enabled, then the option automatically becomes disabled. After the changes are made, you can reenable it. #!N #!N Choosing #!F-adobe-times-bold-r-normal--18* End Execution #!EF while the visual program is executing causes execution to stop after the currently executing module. #!N #!N The final #!F-adobe-times-bold-r-normal--18* Execute #!EF menu option is #!F-adobe-times-bold-r-normal--18* Sequencer #!EF . If you select this option, and a Sequencer tool is present in the visual program, the Sequencer appears (see #!Lsequen,dxall295 h Using the Sequencer #!EL for more information). While the Sequencer runs, you can change interactor settings, and those changes are reflected in subsequent frames generated by the Sequencer. The #!F-adobe-times-bold-r-normal--18* Execute Once #!EF and #!F-adobe-times-bold-r-normal--18* Execute on Change #!EF options are grayed out when the Sequencer is running, but when you pause the Sequencer, you can use those two options to explore the particular frame the Sequencer paused on. #!N #!N While the visual program is executing, the #!F-adobe-times-bold-r-normal--18* Execute #!EF option on the menu bar is highlighted. It remains highlighted until execution is finished. If #!F-adobe-times-bold-r-normal--18* Execute on Change #!EF is selected, the #!F-adobe-times-bold-r-normal--18* Execute #!EF option on the menu bar is highlighted with one color during execution, and another color outside of execution cycles. #!N #!N #!N #!F-adobe-times-medium-i-normal--18* Next Topic #!EF #!N #!N #!Lsequen,dxall295 h Using the Sequencer #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N
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