ListHistogrammer
Computes a histogram of the values found in a list, and returns these in a new list attribute on the feature.
Parameters
The source list from which the histogram will be computed.
The name of the new list attribute that will contain the output histogram. The new list will be sorted so that the value with the most occurrences will be first.
Usage Notes
If the source list did not have elements, a new list will not be created and this transformer will have made no changes to the feature.
Example
If a feature with this list enters this transformer:
somelist{0}.val = 'apple'
somelist{1}.val = 'donut'
somelist{2}.val = 'aardvark'
索莫斯特{3} .val ='苹果'
somelist{4}.val = 'aardvark'
somelist{5}.val = 'apple'
the resulting feature will have this list attribute:
_histogram{0}。值= '苹果'
_histogram{0}。count = 3
_histogram {1} .value ='Aardvark'
_histogram{1}.count = 2
_histogram{2}.value = 'donut'
_histogram{2}.count = 1
Editing Transformer Parameters
Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, clickbeside the applicable parameter. For more information, seeTransformer Parameter Menu Options.
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