Distribution class

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.

Constructors

Distribution()
Distribution.fromJson(Map _json)

Properties

bucketCounts ↔ List<String>
Required in the Stackdriver Monitoring API v3. The values for each bucket specified in bucket_options. The sum of the values in bucketCounts must equal the value in the count field of the Distribution object. The order of the bucket counts follows the numbering schemes described for the three bucket types. The underflow bucket has number 0; the finite buckets, if any, have numbers 1 through N-2; and the overflow bucket has number N-1. The size of bucket_counts must not be greater than N. If the size is less than N, then the remaining buckets are assigned values of zero.
read / write
bucketOptions BucketOptions
Required in the Stackdriver Monitoring API v3. Defines the histogram bucket boundaries.
read / write
count ↔ String
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.
read / write
exemplars ↔ List<Exemplar>
Must be in increasing order of value field.
read / write
mean ↔ double
The arithmetic mean of the values in the population. If count is zero then this field must be zero.
read / write
range Range
If specified, contains the range of the population values. The field must not be present if the count is zero. This field is presently ignored by the Stackdriver Monitoring API v3.
read / write
sumOfSquaredDeviation ↔ double
The sum of squared deviations from the mean of the values in the population. For values x_i this is: Sumi=1..n((x_i - mean)^2) Knuth, "The Art of Computer Programming", Vol. 2, page 323, 3rd edition describes Welford's method for accumulating this sum in one pass.If count is zero then this field must be zero.
read / write
hashCode → int
The hash code for this object.
read-only, inherited
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited

Methods

toJson() → Map<String, Object>
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
toString() → String
Returns a string representation of this object.
inherited

Operators

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