sourceVariable, this element defines a variable whose
values can be used elsewhere in the visualization. Instead of being
read from a data source, the variable’s data are defined by a
This element has the following attributes.
Always set to
An expression that defines the variable’s value. In theory this could be an arbitrary expression in terms of constants, functions, and other variables, e.g. (var1 + var2) / 2. In practice, the corpus contains only the following forms of expressions:
A constant. The meaning when a variable is named is unknown. Sometimes the “variable name” has spaces in it.
Transforms the values in the named variable using the
valueMapEntrys contained within the element.
variable-name of a variable linked to this one, so that a
viewer can work with them together. For a group variable, this is the
name of the corresponding categorical variable.
|• SPV Detail valueMapEntry Element:|