Reference documentation and code samples for the Google API Common Protos Client class Distribution.
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.
Generated from protobuf message google.api.Distribution
Namespace
Google \ ApiMethods
__construct
Constructor.
data
array
Optional. Data for populating the Message object.
↳ count
int|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.
↳ mean
float
The arithmetic mean of the values in the population. If count
is zero then this field must be zero.
↳ sum_of_squared_deviation
float
The sum of squared deviations from the mean of the values in the population. For values x_i this is: Sum[i=1..n]((x_i - mean)^2) Knuth, "The Art of Computer Programming", Vol. 2, page 232, 3rd edition describes Welford's method for accumulating this sum in one pass. If count
is zero then this field must be zero.
↳ range
Distribution\Range
If specified, contains the range of the population values. The field must not be present if the count
is zero.
↳ bucket_options
Distribution\BucketOptions
Defines the histogram bucket boundaries. If the distribution does not contain a histogram, then omit this field.
↳ bucket_counts
array
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. If present, bucket_counts
should contain N values, where N is the number of buckets specified in bucket_options
. If you supply fewer than N values, the remaining values are assumed to be 0. The order of the values in bucket_counts
follows the bucket numbering schemes described for the three bucket types. The first value must be the count for the underflow bucket (number 0). The next N-2 values are the counts for the finite buckets (number 1 through N-2). The N'th value in bucket_counts
is the count for the overflow bucket (number N-1).
↳ exemplars
getCount
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.
int|string
setCount
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.
var
int|string
$this
getMean
The arithmetic mean of the values in the population. If count
is zero
then this field must be zero.
float
setMean
The arithmetic mean of the values in the population. If count
is zero
then this field must be zero.
var
float
$this
getSumOfSquaredDeviation
The sum of squared deviations from the mean of the values in the population. For values x_i this is: Sum[i=1..n]((x_i - mean)^2) Knuth, "The Art of Computer Programming", Vol. 2, page 232, 3rd edition describes Welford's method for accumulating this sum in one pass.
If count
is zero then this field must be zero.
float
setSumOfSquaredDeviation
The sum of squared deviations from the mean of the values in the population. For values x_i this is: Sum[i=1..n]((x_i - mean)^2) Knuth, "The Art of Computer Programming", Vol. 2, page 232, 3rd edition describes Welford's method for accumulating this sum in one pass.
If count
is zero then this field must be zero.
var
float
$this
getRange
If specified, contains the range of the population values. The field
must not be present if the count
is zero.
hasRange
clearRange
setRange
If specified, contains the range of the population values. The field
must not be present if the count
is zero.
$this
getBucketOptions
Defines the histogram bucket boundaries. If the distribution does not contain a histogram, then omit this field.
hasBucketOptions
clearBucketOptions
setBucketOptions
Defines the histogram bucket boundaries. If the distribution does not contain a histogram, then omit this field.
$this
getBucketCounts
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.
If present, bucket_counts
should contain N values, where N is the number
of buckets specified in bucket_options
. If you supply fewer than N
values, the remaining values are assumed to be 0.
The order of the values in bucket_counts
follows the bucket numbering
schemes described for the three bucket types. The first value must be the
count for the underflow bucket (number 0). The next N-2 values are the
counts for the finite buckets (number 1 through N-2). The N'th value in bucket_counts
is the count for the overflow bucket (number N-1).
setBucketCounts
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.
If present, bucket_counts
should contain N values, where N is the number
of buckets specified in bucket_options
. If you supply fewer than N
values, the remaining values are assumed to be 0.
The order of the values in bucket_counts
follows the bucket numbering
schemes described for the three bucket types. The first value must be the
count for the underflow bucket (number 0). The next N-2 values are the
counts for the finite buckets (number 1 through N-2). The N'th value in bucket_counts
is the count for the overflow bucket (number N-1).
$this
getExemplars
Must be in increasing order of value
field.
setExemplars
Must be in increasing order of value
field.
$this