Distribution class final

Distribution contains summary statistics for a population of values. It optionally contains a histogram representing the distribution of those values across a set of buckets.

The summary statistics are the count, mean, sum of the squared deviation from the mean, the minimum, and the maximum of the set of population of values. The histogram is based on a sequence of buckets and gives a count of values that fall into each bucket. The boundaries of the buckets are given either explicitly or by formulas for buckets of fixed or exponentially increasing widths.

Although it is not forbidden, it is generally a bad idea to include non-finite values (infinities or NaNs) in the population of values, as this will render the mean and sum_of_squared_deviation fields meaningless.

Inheritance
  • Object
  • ProtoMessage
  • Distribution

Constructors

Distribution({int count = 0, double mean = 0, double sumOfSquaredDeviation = 0, Distribution_Range? range, Distribution_BucketOptions? bucketOptions, List<int> bucketCounts = const [], List<Distribution_Exemplar> exemplars = const []})
Distribution.fromJson(Map<String, dynamic> json)
factory

Properties

bucketCounts → List<int>
The number of values in each bucket of the histogram, as described in bucket_options. If the distribution does not have a histogram, then omit this field. If there is a histogram, then the sum of the values in bucket_counts must equal the value in the count field of the distribution.
final
bucketOptions → Distribution_BucketOptions?
Defines the histogram bucket boundaries. If the distribution does not contain a histogram, then omit this field.
final
count → int
The number of values in the population. Must be non-negative. This value must equal the sum of the values in bucket_counts if a histogram is provided.
final
exemplars → List<Distribution_Exemplar>
Must be in increasing order of value field.
final
hashCode → int
The hash code for this object.
no setterinherited
mean → double
The arithmetic mean of the values in the population. If count is zero then this field must be zero.
final
qualifiedName → String
The fully qualified name of this message, i.e., google.protobuf.Duration or google.rpc.ErrorInfo.
finalinherited
range → Distribution_Range?
If specified, contains the range of the population values. The field must not be present if the count is zero.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
sumOfSquaredDeviation → double
The sum of squared deviations from the mean of the values in the population. For values x_i this is:
final

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toJson() → Object
override
toString() → String
A string representation of this object.
override

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Constants

fullyQualifiedName → const String