#!F-adobe-helvetica-medium-r-normal--18* #!N #!CSeaGreen #!N #!Rddinter Using Data-Driven Interactors #!N #!EC #!N #!N Most of the interactor types may be #!F-adobe-times-medium-i-normal--18* data-driven #!EF , meaning that their attributes, such as minimum, maximum, increment, and label, may be set by connecting the output of a tool to the input of the interactor stand-in in the VPE or by a value typed into the interactor stand-in's Configuration dialog box, rather than by using the #!F-adobe-times-bold-r-normal--18* Set Attributes #!EF dialog box for the interactor. #!N #!N If an interactor is data-driven, then the information transmitted via connections or set in the Configuration dialog box overrides the values set via the #!F-adobe-times-bold-r-normal--18* Set Attributes #!EF dialog box and causes the corresponding values in the #!F-adobe-times-bold-r-normal--18* Set Attributes #!EF dialog box to be grayed out. #!N #!N Data-driven interactors allow you to create visual programs that will work with a variety of input data sets without the need to reset the interactor attributes to be in a range appropriate for the data being used. For example, a scalar interactor controlling an isosurface value can be data-driven by connecting the input data field to it. The interactor is then automatically set so that its minimum and maximum span the range of the data. #!N #!N Data-driven interactors have a data input to which an input data field may be connected. In this case the interactor automatically chooses the minimum, maximum, and increment. However, if you would like to have more control over the exact values that are used, the interactors allow you to specify them directly through other input tabs that are by default hidden. For example, you may wish to set the minimum and maximum for an interactor to go from the minimum of the data values to the midpoint of the data values, rather than to the maximum. In this case, you can use the "min" and "max" input tabs of the interactor rather than the "data" tab. #!N #!N The interactors that can be data-driven are Integer, Scalar, Vector, IntegerList, ScalarList, VectorList, Selector, SelectorList, and Toggle. In #!Lfmd,dxall765 h Functional Modules #!EL in IBM Visualization Data Explorer User's Reference, the inputs for each of these interactors are described on the manual page corresponding to that interactor. #!N #!N Each time an input to a data-driven interactor is changed (for example, by importing a new data set) the interactor is reexecuted, updating its attributes. If the current setting of the interactor lies within the new range allowed, the interactor value does not change. If the current setting is outside the new allowed range, the current setting is reset to the midpoint of the new minimum and maximum. #!N #!N #!N #!F-adobe-times-medium-i-normal--18* Next Topic #!EF #!N #!N #!Lmacros,dxall435 h Creating and Using Macros #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N
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