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#!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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